Code of Practice for Railway Protection

Code of Practice for Railway Protection

Land Transport

Authority

Development & Building Control Department

August 2000 Edition

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior permission of the Development and Building Control Department, Land Transport Authority.

Code of Practice for Railway Protection

PREFACE This Code of Practice for Railway Protection (herein referred to as the Code) is issued under Regulation 8 of the Rapid Transit Systems (Development and Building Works in Railway Corridor and Railway Protection Zone) Regulations. Any development or building works to be carried out within the railway corridor and the railway protection zone shall comply strictly with this Code. General amendments and revision to the procedures and requirements can be expected from time to time and any major changes will be made known to all the rele vant professional bodies. Compliance with this Code does not by itself confer immunity to the developers, building owners or  qualified persons from legal liabilities.

Development & Building Control Department Land Transport Authority Singapore

Code of Practice for Railway Protection

PREFACE

Page CONTENTS

i

1 1.1 1.2

General Scope Definitions

1 1

2 2.1

Structure of Code Code structure

3

3

Consultation and Request for Information Consultation Reference plans Request for information

3.1 3.2 3.3

4 4 4

RAILWAY PROTECTION ZONE

4

Development Proposal within Railway Protection Zone

4.1 4.2

General Preliminary engineering assessment Works within first reserve Application for approval of development proposal Info Inform rmat atio ion n to be indi indica cate ted d on on pla plan n for development works Appro pprova vall of of dev deveelopm lopmen entt pro propo posa sall Departure Departure or deviati deviation on from from approved approved  plan

4.3 4.4 4.5 4.6 4.7

5 5.1 5.2 5.3 5.4 5.5

6 6.1 6.2 6.3 6.4 6.5 6.6

Building Proposal within Railway Protection Zone General Appl Applic icat atio ion n for for app approv roval al of buil buildi ding ng  proposal Info Inform rmat atio ion n to be indi indica cate ted d on on pla plan n for building works Approval of building proposal Departure Departure or deviati deviation on from from approved approved  plan

Engineering Works within Railway Protection Zone General Application for permit Plan for engineering works Engineering evaluation report Instrumentation proposal Method statement of work

Code of Practice for Railway Protection

Page

6.7 6.8 6 .9 6.10 6.11

Emergency procedure Pre-condition survey report Undertaking for supervision Commencement of work Departure Departure or deviat deviation ion from approved approved  plan

7

Supervision of Works within Railway Protection Zone General Duties of qualified person Monitoring of rapid transit systems Protection of rapid transit systems structure and facilities Completion of work Release of certificate of statutory completion clearance

7.1 7.2 7.3 7.4 7 .5 7 .6

5 5

8 8 .1 8 .2 8 .3

Access to Track and Station Premises General Application for access Granting of access

5

9

6 6

9 .1 9.2 9.2 9.3

Installation of Instruments in Trainway General Appli pplica cati tion on for inst instru rum ment ent inst instaallat llatiion Info Inform rmati ation on to be indi indica cate ted d on on pla plans ns & calculations Approval fo for in instrument in installation Supervision of installation

5 5

9 .4 9 .5 7 7

10

7

10.1 10.2 10.3

8 8

10.4 10.5 10.6 10.7 9 9 9 9 10 10

11 11.1 11.1 11.2 11.2

Technical Requirements for Development and Building Works within Railway Protection Zone General Compliance with Code Meeting the performance requirements Objec jective ives an and fu function ional st statem tements Deemed-to-satisfy provisions Alternative solutions Assessment methods

Performance Provisions Stru Struct ctur ural al inte integr grit ity y of rapi rapid d tran transi sitt systems Opera perati tion onal al saf safety ety of rapi rapid d tran ransit sit systems

11 11 11 11 11

12 12 12 12 12 12

14 14 14

15 15 15 16 16

17 17 17 17 18 18 18

19 19

i

Page

11.3 11.4

12 12.1 12.1 12.2 12.3 12.4

Fire safety and inspection/ maintenance of rapid transit systems Flood protection of rapid transit systems

Acceptable Construction Gene Genera rall requ require ireme ment ntss in all all rese reserve rvess within railway protection zone Site preparation works Substructure works Building works in all reserves

20

13.1 13.2 13.3 13.3 13.4 13.4 13.5

14 14.1 14.2 14.2 14.3 14.3 14.4 14.5

15 15.1 15.2 15.3 15.4 15.5 15.6 15.7

16

16.1

Development Proposal within Railway Corridor General Application for approval of development proposal Info Inform rmat atio ion n to be indi indica cate ted d on plan plan for development works Appr Approv oval al of deve develo lopm pmen entt prop propos osal al Departure Departure or deviation deviation from approved approved  plan

Building Proposal within Railway Corridor General Appl Applic icat atio ion n for for appro approva vall of buil buildi ding ng  proposal Info Inform rmat atio ion n to be indi indica cate ted d on plan plan for building works Approval of building proposal Departure Departure or deviation deviation from approved approved  plan

Engineering Works within Railway Corridor General Application for permit Plan for engineering works Engineering evaluation report Commencement of work Departure Departure or deviation deviation from approved approved  plan Completion of works

Technical Requirements for Development and Building Works within Railway Corridor General

Code of Practice for Railway Protection

16.2

Technical requirements

41

20 APPENDICES

A B 22 24 25 30

C D E F G

RAILWAY CORRIDOR 

13

Page

Structure of code Submission process for   development and building works within railway protection area Standard forma rmat for eme emergenc ency  procedure Definitions of compressible soils Guidelines fo for in instrum rumentation  proposal List of drawings Application forms

A-1 B-1

C-1 D-1 E-1 F-1 G-1

36 36 36 36 37

38 38 38 38 38

39 39 39 39 39 39 40

41

ii

SECTION 1 GENERAL

1.1

Scope

1.1.1

This Code deals with the submission procedures and requirements for obtaining the approval for development and building proposals, the permit to commence engineering works and the clearance for the release of certificate of  statutory completion for works within the railway corridor and the railway protection zone. Technical requirements for compliance at the design and construction stages of development are also stipulated.

“Authority” means the Land Transport Authority of Singapore established under the Land Transport Authority of  Singapore Act 1995; “building works” has the same meaning as in the Building Control Act (Cap 29); “deemed-to-satisfy provisions” provisions” means means the provisions contained in i n Section 12 of  this Code which are deemed to comply with the performance requirements;

1.1.2

The Authority’s requirements for restricted activities are issued under a separate document entitled ‘Guide to Carrying out Restricted Activities within Railway Protection and Safety Zones’. Zones’ .

“development solution” means a solution which complies with the performance requirements and is : a) an alternative solution; or b) a solution which complies with the deemed-to-satisfy provisions; or c) a combination of (a) and (b)

1.2

Definitions

“development” has the same meaning as in the Planning Act (Cap 232);

For the purpose of this Code, the following definitions shall apply : “above ground structure” shall include viaduct, bridge, abutment and any rapid transit systems station which adjoins the railway viaduct; “alternative solution” means a development solution which complies with the performance requirements other than by reason of complying with the deemed-to-satisfy provisions; “amendment plan” has the same meaning as in the Rapid Transit Systems (Developments in Railway Corridor and Railway Protection Zone) Regulations; “assessment method” means a method used for determining or establishing that a development solution complies with the performance requirements; “at grade structure” shall include any rapid transit systems station where the platform level is at ground level, on embankment or in cutting and any section of the railway with tracks at ground level, on embankment or in cutting;

Code of Practice for Railway Protection

“expert judgment” means the judgment of an expert (or group of experts) who has the relevant qualifications, substantial knowledge and experience in a particular subject/ field to determine whether a development solution complies with the performance requirements; “functional statement” describes how the development proposals achieve the objectives; “land surveyor” means a person registered under the Land Surveyors Act; “objectives” mean a statement contained in this Code that forms the aim of the Authority in safeguarding the railway; “performance requirement” means a requirement which states the level of  performance which a development solution must meet; and “professional engineer” means a person registered under the Professional Engineers Act; “qualified person” means a person as defined in the Building Control Act (Cap 29);

1

“railway area” has the same meaning as in the Rapid Transit Systems Act (Cap 263A);

“sub-aqueous structure” shall include any rapid transit systems structure beneath river or sea;

“railway corridor” has the same meaning as in the Rapid Transit Systems (Development and Building Works in Railway Corridor and Railway Protection Zone) Regulations;

“the Regulations” means the Rapid Transit Systems (Development and Building Works in Railway Corridor and Railway Protection Zone) Regulations 2000 as amended from time to time.

“railway protection zone” has the same meaning as in the Rapid Transit Systems (Railway Protection, Restricted Activities) Regulations;

“transition structure” shall include any rapid transit systems structure that occurs between underground structure and above ground or at grade structure;

“railway safety zone” has the same meaning as in the Rapid Transit Systems (Railway Protection, Restricted Activities) Regulations;

“underground structure” shall include inter-alia any rapid transit systems underground station, bored tunnel, cut and cover tunnel, interchange shaft, pedestrian passage, cross passageway between tunnels and emergency escape shafts;

“rapid transit systems” has the same meaning as in the Rapid Transit Systems Act (Cap 263A); “restricted activities” has the same meaning as in the Rapid Transit Systems (Railway Protection, Restricted Activities) Regulations;

Code of Practice for Railway Protection

“verification method” means a test, inspection, calculation or other method that determines whether a development solution complies with the relevant performance requirements.

2

SECTION 2 STRUCTURE OF CODE

(c) Appendix C – Standard format for emergency procedure;

2.1

Code Structure

2.1.1

This Code is divided divided into four main parts as shown in  Appen  Appendix dix A. They are namely : (a) Introduction (b) Submission Procedures quirements (c) Technical Requirements (d) Appendices

and

(e) Appendix E – Guidelines instrumentation proposal;

Re-

2.1.2

The submission procedures and requirements for obtaining approval for a development and building proposal, permit to commence engineering works, etc. within the railway protection zone and the railway corridor are dealt with in Sections 4 to 9 and 13 t o 15 respectively.

2.1.3

The technical requirements for the various types of engineering works within the railway protection zone and railway corridor are stipulated in Sections 10 to 12 and 16 respectivel y  y.

2.1.4

(d) Appendix D – Definitions compressible soils;

The following items are compiled under the appendices of this Code : (a) Appendix A – Structure of code;

of 

for

(f) Appendix F – List of drawings indicating the definitions of reserve lines for each type of rapid transit systems structure; the details required for the checking of  instrument installation in trainway; the details on first reserve line demarcation; the typical debonding details for load bearing piles and the interpretation of track criteria; and (g) Appendix G – Application forms. 2.1.5

Except as otherwise stated, references to a Regulation number (example, Regulation 4) in this Code are references to the regulations numbered in the Rapid Transit Systems (Development and Building Works in Railway Corridor and Railway Protection Zone) Regulations 2000 as amended from time to time.

(b) Appendix B – Submission process for development and building works within the railway protection zone;

Code of Practice for Railway Protection

3

SECTION 3 CONSULTATION AND REQUEST FOR INFORMATION

3.1

Consultation

3.2

Reference Plans

3.1.1

The qualified person may consult the Authority on proposed development within the Railway Corridor or the Railway Protection Zone for information and requirements on railway protection matters before making any formal application for approval.

3.2.1

Plans defining the Railway Corridor and Railway Protection Zone prepared by the Authority (LTA) are available for   purchase or for inspection during the usual working hours at the office of the Development & Building Control Department of Land Transport Authority.

3.1.2

Any preliminary consultation with the Authority or submission of plans shall not be taken as approval or disapproval of the proposed development or to be construed as having the agreement of the Authority.

3.2.2

3.1.3

All correspondence including applications for approval and requests for consultation meeting or information should be addressed to Manager, Development & Building Control Department, Land Transport Authority at 251 North Bridge Road Singapore 179102.

The plans provided are based on data available at the time of enquiry and are given without prejudice to any changes which may take place subsequently. Whilst every endeavour is made to ensure that the information provided is updated and correct, the Authority disclaims any liability for any damage or  loss that may be caused to any person directly or indirectly as a result of any error or omission.

Code of Practice for Railway Protection

4

SECTION 4 DEVELOPMENT PROPOSAL WITHIN RAILWAY PROTECTION ZONE

4.1

General

4.1.1

This section stipulates the procedures and requirements for obtaining approval for a development proposal within the railway protection zone.

4.1.2

4.2

4.2.1

4.2.2

4.4

Application for Approval Development Proposal

4.4.1

An application for the approval of  development proposal shall be accompanied by one set of the following items :

Plan for development works within the railway protection zone shall be submitted to the Authority for approval in accordance with Regulation 4.

(a) Plan for development works; (b) Engineering evaluation report accompanied by plan for engineering works; and

Preliminary Engineering Assessment

The submission process for any development works within the railway  protection zone is as shown sh own in the flow chart under  Appendix  Appendix B. A professional engineer (civil) should be engaged at this stage to carry out a  preliminary engineering assessment of  the effects of the development proposal on the rapid transit systems. The appointed professional engineer (civil) is encouraged to initiate a consultation meeting with the Authority to discuss his  proposal before submitting a formal application.

4.2.3

A copy of the engineering evaluation report, accompanied by plans for  engineering works, endorsed by the appointed professional engineer (civil) shall be submitted together with the formal application for the approval of  development proposal. For development located close to the rapid transit systems structures, the Authority requires the qualified person to submit certified survey  plans to assist in the processing processing of  engineering evaluation report.

4.3

Works Within First Reserve

(c) Form LTA DBC (where applicable).

For any development works within the first reserve which would involve the use of crane, an application for the exemption of the provisions under the Rapid Transit Systems (Railway Protection, Restricted Activities) Regulations* shall be made by the qualified person in writing. *

RAIL-EXEMPT 

4.5

Information To Be Indicated On Plan for Development Works

4.5.1

Plan for development works shall be  prep  prepar ared ed in acco accord rdan ance ce with with the the Regu Regula latio tions ns..

4.5.2

The first sheet of the plan shall bear the standard declarations as given below : I, _______________________, NRIC no/ Passport no, ________________,  being the qualified person appointed under Regulation 5(3) of the Rapid Transit Systems (Development and Building Works in Railway Corridor  and Railway Protection Zone) Regulations, hereby certify that the development or building works within the railway protection zone as shown on these plans have been designed in accordance with the Code of Practice for Railway Protection and any other  conditions that the Land Transport Authority may impose.

4.5.3 4.3.1

of 

The qualified person shall sign on every sheet of the plans and be responsible for  the accuracy of the details indicated. The owner/ developer shall also sign on these  plans.

Application for such exemption can be made using Form LTA DBC RAIL-EXEMPT  which is available in the ‘Guide To Carrying Out Restricted Activities within Railway Protection and Safety Zones’

Code of Practice for Railway Protection

5

4.5.4

4.5.5

The plan shall be drawn to a scale of  1:100 or 1:200 or 1:250 generally, except for the site plan which is to be  presented in a scale of 1:500.

4.6

4.6.1

Site and layout plans shall show the following items :

Approval of Development Proposal

The Authority will approve the development proposal in writing if the following requirements are complied with : (a) Qualified person has complied with the requirements of Clauses 4.2 to 4.5 hereof and that all items submitted are found to be in order; and

(a) Scale of plans; (b) Location and clearances of the  proposed development works in relation to the rapid transit systems structure;

(b) Qualified person has fully demonstrated and confirmed that it is feasible for the development works to fully meet the technical requirements of  of Sections 10 to 12.

(c) First, second and third reserve lines of the rapid transit systems (where applicable); and (d) Basement line (if any); 4.5.6

Sections and elevations shall show the following items :

4.7

Departure or Approved Plan

(a) Scale of the plans;

4.7.1

In accordance with Regulation 5, amendment plan shall be submitted to the Authority for approval if any development works depart or deviate from the approved plan.

4.7.2

 No person shall carry out any development works in departure or  deviation from the approved plan unless the amendment plan has been approved.

(b) Platform levels of the proposed development works; (c) Minimum clearance between  proposed development works and the nearest rapid transit systems structure; and

Deviation

from

(d) First, second and third reserve lines of the rapid transit systems (where applicable).

Code of Practice for Railway Protection

6

SECTION 5 BUILDING PROPOSAL WITHIN RAILWAY PROTECTION ZONE

5.1

General

5.1.1

This section stipulates the procedures and requirements for obtaining approval for a building proposal within the railway protection zone.

5.1.2

5.3.5

Site and layout plans shall show the following items : (a) Scale of the plans; (b) Building and boundary lines of  building;

Plan for building works within the railway protection zone shall be submitted to the Authority for approval in accordance with Regulation 4.

(c) Location and clearances of the building works in relation to the rapid transit systems structure;

5.2

Application for Approval of Building Proposal

(d) First, second and third reserve lines of  the rapid transit systems structure (where applicable);

5.2.1

An application for the approval of  building proposal shall be accompanied by one set of the following items :

(e) Existing ground level and proposed platform level; (f) Basement outline (if any);

(a) Plan for building works; (g) Discharge outlet from pump sump in basement (if any); and

(b) Certified survey plan; (c) Drainage Department’s planning clearance letter on the proposed flood threshold levels for all entrances and openings in the development if it is connected or integrated with the rapid transit systems; and (d) Engineering evaluation report accompanied by plan for engineering works.

(h) Main roads landmarks. 5.3.6

including

special

Sections and elevations shall show the following items : (a) Scale of the plans; (b) Building and boundary lines of  building;

5.3

Information To Be Indicated On Plan for Building Works

(c) Horizontal and vertical clear distances between rapid transit systems structure and the proposed development;

5.3.1

Plan for building works shall be prepared in accordance with the requirements of the Regulations.

(d) First, second and third reserve lines of  rapid transit systems structure (where applicable);

5.3.2

The first sheet of the plan shall bear the relevant standard standard declarations as given in Clause 4.5.2. 4.5.2.

(e) Depth of basement (if any);

5.3.3

5.3.4

The qualified person shall sign on every sheet of the plans and be responsible for the accuracy of the details indicated. The plan shall be drawn to a scale of 1:100 or 1:200 or 1:250 generally, except for the site plan which is to be presented in a scale of 1:500.

Code of Practice for Railway Protection

(f) Details of proposed drainage system including discharge outlet (if any); (g) Proposed platform level if the development is connected or integrated with the rapid transit systems; and

7

(h) Affected drain lines and lightning  protection  protection system of the rapid transit systems. 5.3.7

(a) Qualified person has complied with the requirements of Clauses 5.2 and 5.3 hereof and that all items submitted are found to be in order; and

Certified survey plan shall : (a)

Be prepared and submitted using usi ng Form LTA DBC RAIL-SURVEY ;

(b) Be endorsed by a registered land surveyor after conducting a  physical geometric survey of the relevant sections of the rapid transit systems systems structure (refer to Section 8  on access to track and station  premises); (c)

Indicate the scale, existing contours, alignments, chainages, co-ordinates, levels and reserve lines of the rapid transit systems structure;

(d) Indicate the boundary lines, lot numbers and the existing structures.

5.4

Approval of Building Proposal

5.4.1

The Authority will grant approval for the  building  building proposal proposal in writing writing if the following requirements are complied with :

Code of Practice for Railway Protection

(b) The building and engineering works layout including orientation and set  back distances, clearances from the rapid transit systems structure and the proposed construction materials fully satisfy the technical requirements of Sections 10 to 12 .

5.5

Departure or Deviation from Approved Plan

5.5.1

In accordance with Regulation 5, amendment plan shall be submitted to the Authority for approval if any building works depart or deviate from the approved  plan.

5.5.2

 No person shall carry out any building building works in departure or deviation from the approved plan unless the amendment plan has been approved.

8

SECTION 6 ENGINEERING ENGINEERING WORKS WITHIN RAILWAY PROTECTION ZONE

6.1

General

6.2.2

6.1.1

This section stipulates the procedures and requirements for obtaining a permit to commence engineering works within the railway protection zone.

The requirements for the above items are given in Clauses 6.3 to 6.10 for  compliance.

6.3

Plan for Engineering Works

6.3.1

Plan for engineering works shall be  prepared  prepared in accordan accordance ce with the requirements of the Regulations and endorsed by a qualified person.

6.3.2

Layout plans and cross sectional details shall indicate the following items :

6.1.2

Engineering works refer to any kinds of  construction works that may endanger or  is likely to affect the structural integrity of the rapid transit systems structure and the safety of its operation.

6.1.3

In accordance with Regulation 6, an application for a permit to commence any works for which the plans have been approved under Regulation 4 or 5 shall  be made.

6.1.4

(a) Scale of the plans; (b) Building and boundary lines of   building;  building;

 No engineering works shall commence on site without the permission of the Authority in writing.

6.2

Application for Permit

6.2.1

An application for permit to commence a specific phase of engineering works shall  be accompanie accompanied d by one set of the following items :

(c) Vertical and horizontal distances of  the engineering works (site preparation, substructures and bui-lding construction works, etc.) in relation to the existing rapid transit systems structure; and (d) First, second and third reserve lines of  the rapid transit systems structure and the line of influence (where applicable).

(a) Plan for engineering works; (b) Engineering evaluation report;

6.4

Engineering Evaluation Report

(c) Instrumentation proposal and initial instrumentation readings;

6.4.1

Engineering evaluation report shall be  prepared  prepared and endorsed endorsed by a qualified qualified  person.  person.

6.4.2

The above report shall address the following items :

(d) Method statement of work; (e) Emergency procedure; (f) Pre-condition survey report; (g) Form LTA DBC RAIL-SUPV   –  Undertaking to supervise works within the railway protection zone; and (h) Relevant documents indicating planning approval from the competent authority.

(a) Predicted movements (as categorised in Table 12.1 of Section 12) at relevant stages of construction and at completion of the development works of the existing rapid transit systems structure due to the proposed engineering works. The evaluation shall include the following items : (i)

Code of Practice for Railway Protection

Detailed examination of the ground conditions at site;

9

(ii)

(iii)

Calculations for the derivations of the predicted movements; and

existing rapid transit systems and the ground adjacent to it; (b) Layout plans and relevant crosssections indicating the locations of  proposed instruments relative to the rapid transit systems structure;

Appropriate sensitivity analysis to check that the assessment would not be affected by any variation in input parameters and conditions that may occur during all stages of the construction work.

(c) Details of the instruments or equipment, including the types, function of instruments, depth of  installation, etc.;

(b) Assessment of the likely effects of  movement on the existing rapid transit systems. The effects on structural integrity, track beds, structural gauge clearances, drainage of the existing rapid transit systems, etc. shall be considered. (c) Proposals for any special measures or advance works needed to minimise the susceptibility of the existing rapid transit systems to damage and to ensure the continuation of safe trainoperating conditions. (d)

Proposals for rectification works to the existing rapid transit systems structure. These may include specifications for remedial grouting or structural repair, requirements to adjust the track during or subsequent to construction, the need to re-align the affected drains, etc.

(e) The report shall clearly demonstrate that the performance performance requirements in Section 11 are fully met after all works have been completed. 6.4.3

Notwithstanding the above, the Authority reserves the right to specify any other requirements on the engineering evaluation report which are deemed necessary for the safeguarding of the rapid transit systems.

6.5

Instrumentation Proposal

6.5.1

Instrumentation proposal shall be prepared and endorsed by a qualified person.

6.5.2

The proposal shall include the following items : (a) Comprehensive monitoring system to monitor the behaviour of the

Code of Practice for Railway Protection

(d) Frequency of monitoring; (e) Valid calibration certificates for the instruments proposed (where applicable); and (f) Schedule for instrument installation within the premises of the rapid transit systems structure indicating the number and frequency of access required. 6.5.3

In preparing the above proposal, the qualified person shall comply with the requirements stipulated in  Append  Appendix ix E  Guidelines for Instrumentation Proposal.

6.5.4

For any installation of instruments instruments in the trainway, the requirements in Section 9 shall also be complied with.

6.5.5

A copy of the initial readings shall be submitted to the Authority for the release of permit to commence work.

6.6

Method Statement of Work

6.6.1

Method statement for carrying out any engineering works shall be prepared and endorsed by a qualified person.

6.6.2

The proposal shall be accompanied by the following items : (a) Layout plan showing the location of  the engineering works relative to the rapid transit systems structure; (b) Write-up on the step-by-step sequence of carrying out each phase of works or activities; and (c) Hazard analysis identifying all possible risks that may be posed to the rapid transit system and a description of the safety and precautionary measures to mitigate these risks.

10

6.7

Emergency Procedure

6.10

Commencement of Work 

6.7.1

An emergency procedure pr epared epared using the standard format given in Appendix in  Appendix C  shall be endorsed and submitted by a qualified person.

6.10.1

The Authority will issue the permit to commence works in writing if the following requirements are complied with :

6.8

Pre-Condition Survey Report

6.8.1

A condition survey report (including  photographic record of the rapid transit systems structure) shall be prepared and endorsed by an independent person who has the appropriate qualifications, for  example, professional engineer or   building surveyor.

(a) Qualified person has complied with the requirements of Clauses 6.2 to 6.10 hereof and that all items submitted are found to be in order; and (b) Qualified person has fully demonstrated that the proposal satisfies satisfies the technical technical requirements of Sections 10 t o 12.

6.8.2

Condition surveys to be undertaken shall include physical surveys of rapid transit systems structure to be carried out by a registered land surveyor. ( The procedure to apply for access to the rapid transit  systems tracks and station premises is given in Section 8 ).

6.10.2

Clearance from the Development & Building Control Department of the Authority shall be obtained before the commencement of construction works including soil investigation and foundation works on site.

6.9

Undertaking for Supervision

6.11 6.11

Depar epartu ture re or Approved Plan

6.9.1

Qualified person appointed under  Regulation 9 for supervision shall complete the letter of undertaking underta king using Form LTA DBC RAIL-SUPV  and submit it to the Authority together with the application for permit to commence work.

6.11.1 6.11.1

In accorda accordance nce with with Regula Regulation tion 5, amendment plan shall be submitted to the Authority for approval if any  building works depart or deviate from the approved plan.

6.9.2

The above form shall be resubmitted whenever there is a change in the qualified person appointed for  supervision.

Code of Practice Practi ce for Railway Protection Protect ion

Devi Deviat atio ion n

from from

6.11.2  No person shall carry out any building works in departure or deviation from the approved plan unless the amendment  plan has been approved.

11

SECTION 7 SUPERVISION OF WORKS WITHIN RAILWAY PROTECTION ZONE

ground have stabilised and no further  movement or change would be anticipated.

7.1

General

7.1. 7.1.1 1

In acco accorda rdanc ncee with with Regu Regula lati tion on 9, the the developer shall appoint and notify the Authority of the qualified person supervising the building works.

7.4 7.4

Prot Proteection tion of Rapi Rapid d Transi ansitt Sys System tems Structures and Facilities

7.2

Duties of Qualified Person

7.4.1

7.2. 7.2.1 1

In addi additi tion on to the the duti duties es sti stipul pulat ated ed und under  er  Regulation 9 and 10, the qualified person shall carry out the duties specified in this section.

7.3

Monitoring of Rapid Transit Systems

Preventive measures shall be taken to  prevent any damage to the existing rapid transit systems structure and facilities including its drainage systems, the floor  tiles or finishes, the exposed lightning conductors running along the surface of  the viaduct columns, earthing pits or  earthing rods, etc. during the construction stage.

7.3.1

The qualified person shall continuously monitor the effects of construction works on the rapid transit systems structure, tracks and the ground. He shall analyse the monitoring results, predict the likely trend and notify the Authority of any deviation from the predicted results and trends. He should make proposal to change his method of working or to implement an emergency plan as a result of monitoring.

7.5

Completion of Work  

7.5.1

Condition surveys shall be carried out upon completion of the proposed works or at intermediate stages as directed by the Authority. Defects found shall be highlighted and compared with the findings of precondition survey.

7.5.2

A proposal on the reinstatement of all defects found in the rapid transit systems (including that of its facilities and tracks)  prepared and endorsed by the qualified  person shall be submitted to the Authority for prior approval.

7.5.3

Reinstatement of the defects in the rapid transit systems shall be completed to the satisfaction of the Authority. The developer  shall bear all direct or indirect costs arising from the rectification works.

7.5.4

A final condition survey shall be conducted upon the completion of all reinstatement work. Defects rectified shall be highlighted and compared with those found after the completion of work  in the final condition survey report.

7.6 7.6

Relea eleasse of Certi ertifi fica cate te of Stat Statu utory tory Completion Clearance

7.6.1

The qualified person shall make an application to the Authority to issue clearance for the release of the certificate of statutory completion.

7.3.2

7.3.3

7.3.4

Once the monitoring readings are taken, they shall be submitted to the Authority without delay. A report of the review and the monitoring results endorsed by a qualified person shall be submitted to the Authority within a week from the date of  monitoring. During the progress of the works, if it  becomes apparent from the monitoring results that the ground movement and/or  the structural movement are likely to exceed the limits, the Authority may order the works to be stopped. The developer shall take additional measures to control movements to within the acceptable limits, all at the cost and expense of the developer before the work is allowed to resume. The monitoring shall continue until all works that may affect the movement of  the rapid transit systems structure have  been completed and the monitoring results show that the rapid transit systems structure and the surrounding

Code of Practice for Railway Protection

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7.6.2

An application for clearance of certificate of statutory completion shall be accompanied by one set of the following items : (a) As-built building, structural and foundation plans and details signed  by the the qualified qualified person; person;

7.6.3

The Authority will issue clearance for  the release of certificate of statutory completion in writing if the following requirements are complied with : (a) Qualified person has complied with the requirements of Clause 7.6.2 hereof and that all items submitted are found to be in order;

(b) Form Form LTA  LTA DBC DBC RAIL-CSC RAIL-CSC-BW  -BW ; (c) Form LTA Form LTA DBC DBC RAIL-CSC RAIL-CSC-PW  -PW  ( if applicable); (d) Form LTA DBC RAIL-CSC-SW  (if applicable); and

(b) The development is completed in accordance with the approved plans; and any damage or defective installation is rectified to the satisfaction of the Authority.

(e) Final condition survey report.

Code of Practice for Railway Protection

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SECTION 8 ACCESS TO TRACK AND STATION PREMISES

8.1

General

8.1. 8.1.1 1

This This sec secti tion on stipu stipula lates tes the the proc proced edur uree for  for  submitting an application to gain access to the rapid transit systems tracks or  station premises.

8.1.2

Access to track can only be obtained during non-operational hours of trains. All personnel working in rapid transit systems premises shall abide by the rules and conditions of the LTA and its licensed railway operator.

8.2

Application for Access

8.2. 8.2.1 1

Appl Applic icat atio ion n on acce access ss to to trac track k or or into into the the station premises shall be made using Form LTA DBC RAIL-ACCESS  to the Authority at least two weeks in advance of the access required.

8.2.2

(c) List and details of equipment, tools to be brought to the track or into the station premises

8.3

Granting of Access

8.3. 8.3.1 1

The The Aut Autho hori rity ty wil willl only only pro proce ceed ed to to arrange with the railway operator for the requested access if the application form is found to be in order and the reason(s) for requesting the access is acceptable.

8.3.2

The applicant will be notified in writing once the access is granted. The actual date and time of track access are, however, determined by the railway operator. The applicant shall liaise with the Authority’s officer to finalise the date of access.

8.3.3

All persons working on track are required to wear proper clothing, high visibility vests and safety shoes. Those who fail to comply with this rule will not  be permitted to access the track.

8.3.4

All persons working on track or within the station premises shall comply with the rules and regulations of the railway operator and instructions from the Authority’s officer-in-charge.

The applicant shall clearly state the following items : (a) The reason(s) for requesting an access to the track or into the station  premises; (b) The names and identification card numbers of all personnel gaining access to the track or into the station  premises;

Code of Practice for Railway Protection

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SECTION 9 INSTALLATION OF INSTRUMENTS IN TRAINWAY

9.1

General

(b) Scale of drawing;

9.1.1

This section stipulates the procedure and requirements for obtaining approval for  the installation of instrument that may infringe into the structural gauge of the operating rapid transit systems tunnel or  trainway.

(c) Rapid transit systems tunnel or  trainway alignment with respect to the development site; and

9.1. 9.1.2 2

All All ins instr trum umen ents ts to be insta install lled ed in the the trainway shall be submitted to the Authority for approval before track  access can be granted for the installation works.

9.2

Application for Instrument Installation

9.2.1

An application for the approval of  instrument installation in trainway shall  be accompanied by one set of the following items :

(d) Chainages of all instrument locations. 9.3.2

Tunnel or trainway cross-sectional plans (refer to sample dr awing awing nos. s hall show the  LTA/DBCCPRP/005-007 ) shall following items : (a) Registered surveyor’s endorsement on every plan for structural gauge clearance; (b) Professional engineer (civil)’s endorsement on every plan for  fixing details; (c) Correct scale of drawing;

(a) Instrumentation layout plan; (d) Chainage of tunnel or trainway cross-sections;

(b) Tunnel or trainway cross-sectional  plans; (c) Plans and calculations on fixing details;

(e) Direction of tunnel or trainway cross-section, i.e., orientation facing towards a particular station or  towards increasing chainage;

(d) Document stating the name and  particulars of the appointed registered surveyor and his assignee (if  any) responsible for checking structural gauge clearance of  instruments installed on site; and

(f) Horizontal & vertical offsets of  outmost object protrusion towards the track, with reference from the inner side of the lower rail; (g) Cant of track in the direction of  cross-section;

(e) Document stating the name and  particulars of the appointed professional engineer (civil) and his assignee (if any) responsible for  checking fixing details of instruments installed on site.

9.3

Information To Be Indicated On Plans & Calculations

9.3.1

Instrumentation layout plan shall show the following items : (a) Registered surveyor’s endorsement on every plan;

Code of Practice for Railway Protection

(h) Horizontal throw; (i) Structure gauge profile without throw or with throw (if applicable); and (j) All instruments including brackets are indicated to be outside the structure gauge. 9.3.3 9.3.3

Fixi Fixing ng deta detail ilss and and calc calcul ulat ation ionss sha shall ll show the following items : (a) Professional engineer (civil)’s endorsement on the first and last sheets of calculations;

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(b) 3-dimensional details of instruments, brackets (including mounting holes & any extendable parts), hold down bolts, fixing details of cables, etc.;

9. 5

Supervision of of In Installation

9.5.1

The registered surveyor and professional engineer (civil) whose names appear on the approved plans shall be fully responsible for the supervision of  instrument installation as shown on the approved plans.

9.5.2

In the event the registered surveyor or the professional engineer (civil) cannot be in attendance on site, subject to the approval of the Authority, they shall appoint an experience assignee(s) to act and suitably discharge their responsibilities as required. Notwith-standing such assignment, the registered surveyor and professional engineer (civil) shall be deemed fully responsible for all action taken by the assignee with or without their consents or sanctions.

9.5.3

Upon completion of the installation works, the registered surveyor and the professional engineer (civil) or their assignee(s) shall sign on the certificate of supervision Form  LTA DBC RAIL INSTR and submit it to the Authority’s officer prior to leaving the tunnel or trainway.

(c) Specifications of all instruments, cables (conforming to the railway operator’s requirements), etc.; and (d) Design calculations on all fixing including hold down bolts, anchorage, etc.

9.4 9.4

Appro pprova vall for for Inst Instru rum ment ent Inst Instal alla lati tion on

9.4. 9.4.1 1

The The Aut Autho hori rity ty will will stam stamp p ‘Appr ‘Approv oved ed for for Installation’ on every sheet of the proposal plans for the installation of  instrument in the trainway if all the requirements listed in Clauses 9.2 and 9.3 hereof are complied with.

9.4.2

The Authority’s officer will not allow any installation in the trainway that do not meet the details shown on the approved drawings. Modification or alteration of any details which may be required due to site constraints shall be submitted to the Authority for approval first before actual installation.

Code of Practice for Railway Protection

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SECTION 10 TECHNICAL REQUIREMENTS FOR  DEVELOPMENT AND BUILDING WORKS WITHIN RAILWAY PROTECTION ZONE

10.1

General

10.3 10.3

The technical requirements for  development and building works within the railway protection zone comprise of  the following components that are structured as shown in diagram 10.1 :

Meet Meetin ing g the the Perf Perfor orm mance ance Requ Requir ireements

Compliance with the performance requirements can only be achieved by : (a) complying with the satisfy provisions; or 

deemed-to-

(a) The objectives; (b) formulating an alternative solution which :

(b) The functional statements; (c) The performance requirements with which all development solutions must comply; and

(i) complies with the performance requirements; or  (ii) is shown to be at least equivalent to the deemed-to-satisfy  provisions; or 

(d) The development solutions.

10.2

(c) a combination of (a) and (b)

Compliance wi with Co Code

A development solution will comply with the Code if it satisfies the  performance requirements.

10.4 10.4

Obje Ob ject ctiv ives es and and Func Functi tion onal al Stat Statem emen ents ts

The objectives and functional statements are to be used as an aid to the interpretation of the requirements in this Code.

Objectives Functional Statements Performance Requirements Development Solutions Deem Deemed ed-t -to-S o-Sat atisf isfy y Provisions

Guidance Levels Compliance Levels

Alte Alterna rnativ tivee Solu Solutio tions ns

Assessment Methods Documentary evidence Verification Methods Expert Judgments Comparison with Deemed-to-Satisfy Provisions

 Diagram 10.1 Structure of Technical Requirements

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10.5 10.5

Deem Deemed ed-t -too-Sa Sati tissfy Prov Provis isio ions ns

A development solution that complies with the deemed-to-satisfy provisions as given in Section 12 is deemed to comply with the performance requirements.

10.6

Alternative Solutio tions

(a) An alternative solution must be assessed according to one or more of the assessment methods. (b) An alternative solution will only comply with the Code if the assessment methods used to determine compliance with the  performance requirements have  been satisfied.

10.7

Assessment Me Methods

The following assessment methods, or  any combination of them, shall be used to determine a development solution which complies with the performance requirements : (a) (a) Evidence to support that the form of  construction or design meets a  perfo  perform rman ance ce requi requirem remen entt or a deem deemed ed-to-satisfy provisions as described in Clause 10.5 hereof.

Code of Practice for Railway Protection

(b) Verification methods The verification methods shall include any method deemed relevant or appropriate by the appointed expert(s) or such other methods as the appropriate authority accepts for  determining compliance with the  performance requirements. The verification methods shall also include a detailed assessment of the risks or hazards which the rapid transit systems will be subjected to, and the effective measures to mitigate these risks. (c) Comparison with the deemed-tosatisfy provisions (d) Expert judgments The expert (group or individual) shall make his judgment based on independent factual information and experience. He shall be responsible for all evaluation and necessary information used to arrive at this  judgment. The basis of his judgment shall be clearly stated and must be demonstrated to be applicable and relevant to the local environmental and ground conditions.

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SECTION 11 PERFORMANCE PROVISIONS

11.1 11.1

Stru Struct ctur ural al Inte Integr grit ity y of of Rap Rapid id Tran Transi sitt Systems

Objectives O11.1

The objectives are to :

11.2 11.2

Operat Oper atio iona nall Saf Safet ety y of of Rap Rapid id Tran Transi sitt Systems

Objectives O11.2

(a) safeguard structural integrity of  rapid transit systems against damage arising from development or building works; and

The objectives are to : (a) safeguard and protect the safe  passage of trains operating in the rapid transit systems from changes to the structures and tracks caused  by development or building works in railway protection zone; and

(b)  protect the rapid transit systems structure against physical damage due to development or building works.

(b) ensure that the operations of the rapid transit systems station are not affected by the development or   building works.

Functional Statement F11.1

The development or building works must not subject the rapid transit systems structure to a combination of loads or  other actions that will impair their  integrity.

Functional Statements F11.2

The development or building works must not : (a) result in changes to the tracks making it unsafe to operate trains;

Performance Requirements P11.1

(b) cause deformation of the rapid transit systems structure that will  prevent safe passage of trains;

The design and construction of  development or building works must make adequate provisions to check and ensure that the rapid transit systems structure are capable of sustaining at an acceptable level of safety and serviceability under : (a) the most adverse combination of  loads; (b) the most adverse movements; and (c) other actions to which the rapid transit systems structure may reasonably be subjected to.

Code of Practice for Railway Protection

(c) affect safe passage of public; and (d) disrupt the mechanical and electrical services in the rapid transit systems.

Performance Requirements P11.2

The design and construction of  development or building works must make adequate provisions to check and ensure that : (a) the rapid transit systems structure and tracks are not subjected to deformation and changes that will not allow trains to operate at the maximum design speed;

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(b) the impact on the rapid transit systems structure and tracks is not such that the safety and comfort of   passengers are compromised;

(b) there is provision of adequate egress capacity for the rapid transit systems from the most remote point in the rapid transit systems to the point of  safety;

(c) there is no obstruction to the free flow of public moving in and out of  the rapid transit systems station; and

(c) there is no re-circulation of smoke into the rapid transit systems in the event of station fire or fire from the development or building works;

(d) the performance of the mechanical and electrical services are maintained.

11.3 11.3

(d)  provision of fire fighting measures in the rapid transit systems is not compromised;

Fire Fire Safe Safety ty and and Insp Inspec ecti tion on / Main Main-tenance of Rapid Transit Systems

(e) there is provision of adequate facilities for the inspection and maintenance of viaduct columns,  beams and bearings; and

Objectives O11.3

The objectives are to ensure that : (a) the provisions of fire safety measures and fire protection works for the rapid transit systems are adequately provided for and are acceptable arising from integration of any development or building works; and (b) there are adequate provisions of  access and facilities for inspection and maintenance of the viaduct columns, beams and bearings are adequately provided in the development.

Functional Statement F11.3

The development or building works must not subject the rapid transit systems to fire hazard and to prevent accessibility for inspection and maintenance.

Performance Requirements P11.3

(f) lightning protection and drainage systems of the rapid transit systems are not adversely affected or  compromised.

The design and construction of  development or building works must be carried out in such a manner as to ensure that : (a) there is provision of adequate  protection of the rapid transit systems from the spread of fire from the development or building works;

Code of Practice for Railway Protection

11.4 11.4

Floo Flood d Prot Protec ecti tion on of Rapi Rapid d Tran Transi sitt Systems

Objective O11.4

The objective is to protect the safety of   people in the rapid transit systems from ingress of water due to flooding or other  means.

Functional Statement F11.4

The development or building works must not subject the rapid transit systems to ingress of water due to flooding or other  means.

Performance Requirements P11.4

The design and construction of  development or building works with underground connections to the rapid transit systems must make adequate  provisions to : (a)  prevent the ingress of water into rapid transit systems due to flooding or other means including run off  from the surface; and

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(b) avoid the likelihood of water  discharged or redirected into the rapid transit systems.

Code of Practice for Railway Protection

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SECTION 12 ACCEPTABLE CONSTRUCTION

12.1 12.1

Gene Genera rall Req Requi uire reme ment ntss in in All All Rese Reserv rves es within Railway Protection Zone

12.1.2 12.1.2

The rapid transit systems structure and the adjacent ground affected by the development or buildings works within the railway protection zone shall be monitored for any adverse effects that may affect the safety of the rapid transit systems. The behaviour of the rapid transit systems track shall be monitored  based on the limits for twist, vertical dip or peak and horizontal versine given in Table 12.1 if the proposed development is likely to cause any rotation of the track. The guidelines guidelines for instrumentation instrumentation  proposal as gi ven in i n  Appendix E  shall be strictly complied with.

Appropriate Performance Requirements

Where an alternative approach to engineering works in all reserves is proposed to that described in this Section, that proposal must comply with Performance Requirements P11.1 to P11.4 in Section 11.

Acceptable Construction Practice

Compliance with this Section satisfies satisfies Performance Requirements P11.1 to P11.4 for  for  engineering works in all reserves. 12.1. 12.1.3 3 12.1 12.1.1 .1

Stru Struct ctur ural al and and Trac Track k Limi Limits ts The design and construction of  development or building works within the railway protection zone shall satisfy the requirements of  Table 12.1 relating to the allowable structural and track  limits for all types of rapid transit systems.

Code of Practice for Railway Protection

Monito Monitorin ring g of of Rapi Rapid d Trans Transit it System Systemss

Rest Restri rict cted ed Acti Activi viti ties es The rapid transit systems shall be  protected against risks posed by restricted activities arising from any development or building works. Reference should be made to the document entitled ‘Guide ‘ Guide to Carrying out Restricted Activities within Railway Protection and Safety Zones’ . Zones’.

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12.2

Site Pre Preparation Works

Appropriate Performance Requirements

Where an alternative approach to site  preparation works in all reserves is proposed to that described in this Section, that proposal must comply with Performance Requirements P11.1 to P11.4 in Section 11.

12.2 12.2.1 .1

Mobi Mobili liza zati tion on Wor Works ks

12.2.1.1 Mobilization works within the railway  protection zone shall satisfy the conditions in Table 12.2.1.1. 12.2 2.2.2

Demo emolition Wor Works

12.2.2.1 Demolition works are generally allowed within the railway protection zone except above underground stations and transition structures.

Acceptable Construction Practice

Compliance with this Section satisfies satisfies Performance Requirements P11.1 to P11.4 f or  or  site preparation works provided the requirements of  Section 12.1 are also complied with.

Table 12.2.1.1 Mobilization Works

  s   e   r   u    t   c   u

First Reserve

Outside First Reserve

(a) Storage or placement of any construction materials, temporary storage of  inflammable fluid, gas cylinders, etc. are not allowed.

The first, second and third reserve lines of  the rapid transit systems (where applicable) must be pegged and demarcated clearly on site by a registered land surveyor based on

12.2

Site Pre Preparation Works

Appropriate Performance Requirements

Where an alternative approach to site  preparation works in all reserves is proposed to that described in this Section, that proposal must comply with Performance Requirements P11.1 to P11.4 in Section 11.

12.2 12.2.1 .1

Mobi Mobili liza zati tion on Wor Works ks

12.2.1.1 Mobilization works within the railway  protection zone shall satisfy the conditions in Table 12.2.1.1. 12.2 2.2.2

Demo emolition Wor Works

12.2.2.1 Demolition works are generally allowed within the railway protection zone except above underground stations and transition structures.

Acceptable Construction Practice

Compliance with this Section satisfies satisfies Performance Requirements P11.1 to P11.4 f or  or  site preparation works provided the requirements of  Section 12.1 are also complied with.

Table 12.2.1.1 Mobilization Works

  s   e   r   u    t   c   u   r    t    S   s   m   e    t   s   y    S    t    i   s   n   a   r    T    d    i   p   a    R    f   o   s   e   p   y    T    l    l    A

First Reserve

Outside First Reserve

(a) Storage or placement of any construction materials, temporary storage of  inflammable fluid, gas cylinders, etc. are not allowed.

The first, second and third reserve lines of  the rapid transit systems (where applicable) must be pegged and demarcated clearly on site by a registered land surveyor based on the approved certified survey plan. Details of first reserve line shall follow the typical cross section in Drawing no. LTA/DBC/CPRP/008 .

(b) Movement, operation or parking of any mechanical plants are not allowed. (c) Erection of temporary structures such as site offices, tents, scaffolding, hoarding, etc. are not allowed. (d) Digging of trenches or pits or dumping of  earth are not allowed. (e) Access under the railway must have height restriction gantries on both sides of  the viaduct beam erected.

Code of Practice for Railway Protection

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12.3

Substructure Wo Works

Appropriate Performance Requirements

Acceptable Construction Practice

Where an alternative approach to substructure works in all reserves is proposed to that described in this Section, that proposal must comply with Performance Requirements P11.1 to P11.4 in Section 11.

Compliance with this Section satisfies satisfies Performance Requirements P11.1 to P11.4 for  for  substructure works provided the requirements of Section 12.1 are also complied with.

12.3.1

Footing and Rafts

12.3.1 12.3.1.1 .1

Footin Footing g and and raft raftss withi within n railw railway ay  protection zone shall satisfy the conditions in Table 12.3.1.1 Table 12.3.1.1 Footing and Rafts First Reserve

 ,    d   &  s   n   u   u   n   o   e   o   u   o   r    i    t   q   g   a   r    i     e   s   b    d   n   a   n   r   u    U   T   S   e    d   a   r   g    t    A

   d   n   u   o   r   g   e   v   o    b    A

Not allowed if footing and rafts construction involves excavation within this reserve.

Same as above.

Allowed if the design and layout of footing and rafts allow for the inspection and maintenance of the viaduct structures including that of bearing replacement.

Code of Practice for Railway Protection

Outside First Reserve

Allowed.

Allowed.

Allowed.

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12.3.2

Piling and Drilling Works

12.3.2.1 Piling works including the construction of foundation piles, temporary or   permanent earth retaining walls and any other drilling works within the railway protection zone shall satisfy the conditions in Table 12.3.2.1. Table 12.3.2.1 Piling Works Outside First Reserve First Reserve Second Reserve   e   c   n   a   r   a   e    l    C

  s   u   o   e   u   q   a      b   u    S   r   o   n   o    i    t    i   s   n   a   r    T  ,    d   n   u   o   r   g   r   e    d   n    U

  g   n    i    d   n   o    b   e    D

 Not allowed*

Allowed if piles are kept at least 6m clear on plan from the exterior edge of rapid transit systems structure.

Allowed.

 Not applicable. applicable.

Load bearing piles within the zone of influence of  rapid transit systems structure shall be debonded according to the requirements of Clause 12.3.2.2.

 Not Required. Required.

(a) Piles shall generally augering or reverse techniques.   n   o    i    t   a    l    l   a    t   s   n    I    f   o    d   o    h    t   e    M

Third Reserve

be constructed by circulation drilling

(b) Stability of the ground shall be ensured by the use of casings and/or drilling mud as appropriate.  Not applicable. applicable.

(c) Use of percussively driven concrete piles, steel H-piles, sheetpiles or tanalised timber piles is not acceptable.

Rock chiselling and percussive  piling techniques techniques is acceptable. acceptable.

(d) Use of rock chopping chisels is prohibited. (e) Use of vibratory method of installing and extracting sheetpiles, H-piles or casings is  prohibited.

  e   c   n   a   r   a   e    l    C   e    d   a   r   g    t    f   n   o    A   o   i    d   t   a   o   l    h   l   a    t   e   t   s   n    M    I

   d   n   u   o   r   g   e   v   o    b    A

  e   c   n   a   r   a   e    l    C

 Not allowed. allowed.

Allowed.

Allowed.

(a) Use of percussively driven concrete piles, steel H-piles, sheetpiles or  tanalised timber piles is not acceptable.  Not applicable. applicable.

 Not allowed. allowed.

(b) Use of drilling fluid in the drilling of piles shall be carefully controlled to prevent an increase in the piezometric head within the railway protection zone.

Allowed if piles are kept at least 3m clear on plan of the toe of the existing raker pile supporting the rapid transit systems structure.

* The following may be considered on case-by-case basis : (a) Piling, retaining walls and boreholes which are located less than 6m but more than 3m horizontally from the extreme edge of rapid transit systems structure; and (b) Limited bakau piling terminating at least 3m above the crown of the rapid transit systems tunnels or  underground structures.

Code of Practice for Railway Protection

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12.3.2.2 Debonding of Load Bearing Piles

outer permanent casings during concreting shall also be included.

(a) Load bearing piles shall be designed so they are debonded within the zone of influence of the underground, transition or subaqueous structures. They shall develop their load capacities either in shear or end bearing from soil located below the zone of influence (see Drawing nos.  LTA/DBC/ CPRP/001-002) of the underground, transition or subaqueous structures.

(e) All temporary casing shall be installed to the debonding level to  prevent the ground from moving into the borehole.

(b) Details of the proposal including the thickness of all casings, gap  between inner and outer   permanent casings, type and thickness of debonding mem brane, etc. shall be clearly shown.

(f) Where piles within the first reserve of the rapid transit systems structure are permitted, double  permanent  permanent casing casing debonding, or an equivalent alternative, shall be  provided.

(c) The installation sequence and  procedure including the measures to prevent concrete flowing into the gap between the inner and

(g) Details for a single and double casing debonding system as illustrated in Drawing nos. shall be  LTA/DBC/ CPRP/009-010 shall adopted.

Code of Practice for Railway Protection

(d) For piles with single permanent casing, temporary casing shall be  provided to prevent the debonding membrane on the permanent casing from being damaged during installation.

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12.3.3

Excavation and Dredging Works

12.3.3.1 Excavation and dredging works within the railway protection zone shall satisfy the conditions in Table 12.3.3.1 Table 12.3.3.1 Excavation and Dredging Works First Reserve

Outside First Reserve

Allowed subject to :

  n   o    i    t    i   s   n   a   r    T   r   o    d   n   u   o   r   g   r   e    d   n    U

(a) Piezometric Pressure in Compressible Soil The piezometric pressure in compressible soils within the first and second reserves shall not be reduced by more than 10kPa. For the purpose of this clause, compressible soils shall be taken as fill and soils of the th e Kallang, Tekong Tekong and Transitional members as defined in  Appendix W here the rapid transit systems structure is supported  D. Where on piles or other foundations extending below the compressible layer, this clause may be waived.

 Not allowed*

(b) Cut-off Wall No trench, excavation, caisson, pile or well deeper than 1m below the existing ground water level shall be allowed unless suitable measures such as installation of cut-off  wall, excavation under stabilising fluid or mud, etc. are taken to control the reduction of piezometric pressure. (c) Basement Construction Where basements are more than 1m below the existing ground water table, they shall be made watertight. The  base slab shall be designed for full hydrostatic pressures, and pressure relief in the form of weep-holes or drainage  blankets is not allowed. (d) Tunnel Construction Where tunnel construction works are permitted, the temporary or permanent linings shall be made watertight to prevent any seepage of water into the proposed tunnels under both temporary and permanent conditions.

  s   -   u    b   o   u   e    S   u   q   a

 Not allowed*

Same as above.

  e    d   a   r   g    t    A

 Not allowed.

Same as above

  e   d   v   n   o   u    b   o   r    A  g

 Not allowed.

Allowed subject to item (c) above if lowering of the ground water table is expected due to the excavations.

* The following may be considered on case-by-case basis : (a) Excavation greater than 2m depth but stops above 3m vertically of the rapid transit systems tunnel may be considered on a case-by-case basis. (b) Dredging of seabed or riverbed shall not exceed 3.8m below the Singapore Survey Department Mean Sea Level.

Code of Practice for Railway Protection

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12.3 12.3.4 .4

Groun Ground d Anch Anchors ors or Tie Back Backss

12.3.4.1 The use of ground anchors or tie backs within railway protection zone shall satisfy the conditions in Table 12.3.4.1. Table 12.3.4.1 Ground Anchors or Tie Backs Outside First Reserve First Reserve Second Reserve  ,    d   &  s   n   u   u   n   o   e   o   u   o   r    i    t   q   g   a   r    i     e   s   n    d   r   a   b   n   u    U   T   S   e    t    d   a    A  r   g

  e   d   v   n   o   u    b   o   r    A  g

12.3.5

Third Reserve

Not allowed.

Not allowed.

Allowed.

 Not allowe allowed. d.

Not allowed.

Allowed.

 Not allowe allowed. d.

Allowed if ground anchors or tie backs are kept at least 3m clear on plan of the toe of the e xisting raker pile supporting the rapid transit systems structure.

Blasting

12.3.5.1 Blasting is not permitted within the railway protection zone. For blasting within the railway safety zone, reference should be made to the document entitled ‘Guide to Carrying out Restricted Activities within the Railway Protection and Safety Zones’ .

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29

12.4 12.4

facing the rapid transit systems structure. The building facade facing the rapid transit systems structure shall be designed such that incidence of “Killer Litter” that will affect the safety of  railway will not occur. Adequate screening of windows or openings shall be provided where necessary.

Buil Bu ildi ding ng Work orks in in All All Rese Reserv rves es

Appropriate Performance Requirements

Where an alternative approach to building works in all reserves is proposed to that described in this Section, that proposa l must comply with Performance Requirements P11.1 to P11.4 in Section 11.

Appropriate Performance Requirements

Compliance with this Section satisfies Performance Requirements Requiremen ts P11.1 to P11.4 for  for   building works in all reserves. 12.4 12.4.1 .1

Buil Buildi ding ng adjac adjacen entt to to abo above ve grou ground nd structure

12.4.1.1 12.4.1.1 The layout layout and and design design of any building building adjacent to the above ground rapid transit systems structure shall comply with the conditions below : (a) The building shall be at least 6m clear or the separation distance calculated for unprotected opening in accordance with the Code of Practice for Fire Precaution in Building 1997, whichever is greater, of the outermost edge of the rapid transit systems structure as shown in diagram 12.4.1.1(a) below; and

12.4.2

Building under viaduct

12.4.2.1 The layout layout and design of any building under the viaduct shall comply with the conditions below : (a) The building structure shall be designed for access to allow for  inspection and maintenance of the viaduct structures including bearing replacement; (b) Columns enclosed within building shall be provided with a 25mm thick plaster all round; (c) The development shall not transfer  any loading on to the viaduct structure; (d) The building external walls and roof within 6m from the exterior  of the viaduct shall have a fire resistance of at least 2-hour fire rating as shown in diagram 12.4.2.1(d);

(b) The building shall be orientated  preferably with the end walls PROPOSED BUILDING

Set back  according to Clause 12.4.1.1(a) EXISTING RTS STRUCTURE

 Diagram 12.4.1.1(a) Separation distance between proposed building and above ground structure

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30

(e) Building roof shall be at least 0.75m clear below the viaduct  beam soffit level as shown in diagram 12.4.2.1(d);

(i) An automatic fire protection system in compliance with SS CP 10 shall be provided. Building owner  is required to engage a qualified  person to carry out annual check  of the fire alarm system and to certify it to be in good working condition;

(f) There shall be no placement of  equipment such as air-con condenser above the level of the  building roof; 12.4 12.4.3 .3 (g) Viaduct drainage system, if  affected, should be suitably diverted. Building drainage system shall not be discharged into the viaduct drainage system; (h) The viaduct lightning protection system, if affected, should be suitably diverted, reinstated and tested;

Buil Buildi ding ng over over train trainwa way y with within in an an abo above ve ground station

12.4.3.1 Any development with with habitable floor  directly above a trainway within an above ground station or around the trainway within the station, the elements of structure around the trainway shall be built with fire resistance of not less than 4 hours as shown in diagram 12.4.3.1

Viaduct Beam 6m

6m

Minimum 750 mm

2-hr fire rated roof 

Viaduct Column

2-hr fire rated external wall Ground Level

 Diagram 12.4.2.1(d) Clearance of building roof below viaduct

Code of Practice for Railway Protection

31

FUTURE DEVELOPMENT

   A   e    t   o    N   e   e    S

   A   e    t   o    N   e   e    S

MRT STATION ANCILLARY AREA

 Note A : All elements of structure shall not be less than 4 hours fire rating.

 Diagram 12.4.3.1 Fire resistance of elements of structure around the trainway in an above ground station

Code of Practice for Railway Protection

32

12.4.4

Building with integration or interface with rapid transit systems station Building with integration or interface with rapid transit systems station shall satisfy the requirements of  Clauses 12.4.4.1 to 12.4.4.3.

12.4.4.1 Fire Safety Requirements Where the rapid transit systems station including its entrances or any of its fire safety works are affected, the conditions in Tables 12.4.4.1(a) to 12.4.4.1(d) shall be satisfied.

Table 12.4.4.1(a) Building with Integration or Interface with Station Entr ance Fire Safety Requirements

(a) Unobstructed egress from the entrance to the external shall be provided. The egress width shall not be less than t he total width of the entrance stairs and escalators. (b) The proposed building shall be separated from the station entrance, other than the egress opening to the external, with fire barriers having at least 2 hours fire resi stance. (c) There shall be no unprotected openings of occupancy area within 3 m of the ventilation openings located in the external wall of the entrance.   n   o    i    t   a    t    S    d   n   u   o   r   g   r   e    d   n    U   n   a    f   o   e   c   n   a   r    t   n    E    h    t    i   w    d   e   c   a    f   r   e    t   n    I   g   n    i    d    l    i   u    B

(d) If fire-rated shutters are installed to provide the fire separation as required in (b) above, these automatic fire-rated shutters shall be operated by smoke detectors installed at either side of the fire-rated shutters. (e) These automatic fire-rated shutters after closing by activation of the smoke detectors shall remain closed and be rendered inoperative until the control system which the smoke detectors are connected to is manually reset. (f) An alarm signal from the fire-shutter control panel (on the closing of the shutters) shall  be transmitted to the station's Supervisory Control System. Upon receiving the alarm signal, an audible and visual alarm shall be activated at the Station Control Room and/or the Operation Control Centre. A silencing switch shall be provided to silence the audible alarm but it shall not cancel the visual alar m. (g) Where an existing entrance of an underground station is integrated into a proposed  building and does not comply with the above requirements, the following shall be complied with : (i)

A new entrance having an exit capacity not less than the existing entrance shall  be provided to comply with the requirements above;

(ii)

The means means of escape via the new station entrance shall comply with the relevant requirements of the Standard for Fire Safety in Rapid Transit Systems;

(iii) The existing entrance entrance becomes a link to a proposed building and shall comply with the requirements of  Table 12.4.4.1(b); and (iv) Where the new entrance also replaces the existing entrance as the source of fresh air intake for the station’s smoke control system, the new entrance shall be  provided with the same provisions as for the existing entrance to ensure the  proper operation of the station’s smoke control system.

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33

Table 12.4.4.1(b) Building Linked to a Station Fire Safety Requirements

(a) The link shall not be used as a means of escape.

  n   o    i    t   a    t    S   a   o    t    d   e    k   n    i    L   g   n    i    d    l    i   u    B

(b) The proposed building shall be separated from the station by fire-rated shutter having at least 2 hours fire resistance. (c) The fire-rated shutter shall be held at the open position normally and shall be operated  by smoke detectors installed at either side of the fire-rated shutter. (d) The fire-rated shutter after closing by the activation of the smoke detectors shall remain closed and be rendered inoperative until the control system which the smoke detectors are connected to is manually reset. (e) An alarm signal from the fire-shutter control panel (on the closing of the shutters) shall  be transmitted to the station's Supervisory Control System. Upon receiving the alarm signal, an audible and visual alarm shall be activated at the Station Control Room and/or the Operation Control Centre. A silencing switch shall be provided to silence the audible alarm but it shall not cancel the visual alar m.

Table 12.4.4.1(c) Building Interfaced with Firemen’s & Emergency Exit Staircases and Breeching Inlets & Fir emen’s Intercom Fire Safety Requirements

(a) The staircase shall discharge directly, or via a new exit passageway, to the external. The width of the new exit passageway shall not be less than the width of the staircase.   y   c   n   e   s   g   e   r   s   e   a   m  r   c    E   i   a    &   t    S   s    ’    t   n   i   x   e   E   m   e   r    i    F

(b) All fire safety provisions i n the staircase shall be extended to the new exit passa geway. (c) The staircase and the new exit passageway (where provided) shall be compartmented from the proposed building with masonry structure having at least 2 hours fire resista nce. (d) The entrance to the firemen’s staircase shall be visible from the fire engine accessway and shall be located within 18 m of t he fire engine accessway. (e) There shall be no unprotected openings within 3 m of the staircase entrance.

  m    &  o   s   c    t   r   e   e    l    t   n   n    I    I   g   s   n   ’    i    h   n   c   e   e   m   e   r   e   r    i    B   F

Where a breeching inlet or a firemen’s intercom is interfaced with the proposed building, the breeching inlet or firemen’s intercom shall be vis ible from the fire engine access way and shall be located within 18 m of the fire engine accessway.

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34

Table 12.4.4.1(d) Building Interfaced with Ventilation Shaft Fire Safety Requirements

   *    t    f   a    h    S   n   o    i    t   a    l    i    t   n   e    V

(a) The ventilation shaft shall be separated from the proposed building with masonry structure having at least 2 hours fire resistance. (b) Building works including any fire safety works to be carried out within the boundary of the rapid transit systems shall comply with the relevant requirements of the Standard for Fire Safety in Rapid Transit Systems. (c) Design of the building shall protect the development from hot smoke emitting from the vent shaft at high velocity under smoke extraction scenario when there is a fire in the rapid transit systems structure.

* Other requirement: Space around the vent shaft shall be designed such that exhaust air or smoke (in the event of fire) will not be drawn into the intake vent shaft. The design shall be subjected to the approval of the relevant authority.

12.4.4.2 Flood Protection Requirements

(a) The flood threshold level for all entrances or openings of the  proposed underground structures shall comply with the requirements of the Drainage Department; (b) Openings and services penetrations  below the flood threshold level should be permanently sealed and made watertight; (c) During the construction stage, the existing station wall shall not be  punctured unless the construction of the integrated structure and the adjoining development has reached a level at or above the approved threshold level; and (d) Discharge pipes shall be provided with a swan neck connection to  prevent any back flow of water into the proposed underground structures integrating with the existing station. The invert level of the pipe at the swan neck location shall not  be lower than the flood threshold level. 12.4.4.3 Waterproofing Requirements

(i) (i)

withs withsta tand nd the the cal calcu cula late ted d hyd hydrrostatic pressure and differential movements between the connecting structures; and

(ii) (ii) provid providee at least least two two levels levels of defdefence against water ingress at every interface. For example, the joint  between the proposed and the existing station walls shall be sealed using a hydrophilic rubber  (or an equivalent mean) and a waterproofing membrane system. (b) A membrane waterproofing system shall have at least two layers of  membrane bonded with a bituminous based system to the concrete structure after application of an appropriate primer. Membranes shall be of sufficient thickness and  provided with add-itional protective layers as necessary to ensure that no damage occurs. (c) The waterproofing system shall have at least a ten-year warranty  period. The developer shall be responsible for the maintenance and replacement of the waterproofing system at the interface. (d) The link structure of the development shall be screeded to fall and drain off within the development.

(a) The interface between the proposed  building and the existing underground station shall be provided with a waterproofing system which is able to :

Code of Practice for Railway Protection

35

SECTION 13 DEVELOPMENT PROPOSAL WITHIN R AILWAY CORRIDOR 

13.1

General

13.1.1

This section stipulates the procedures and requirements for obtaining approval for a development proposal within the railway corridor.

13.1.2

13.2

13.2.1 13.2.1

13.3.3

The qualified person shall sign on every sheet of the plans and be responsible for  the accuracy of the details indicated. The owner/ developer shall also sign on these  plans.

13.3.4

The plan shall be drawn to a scale of 1:100 or 1:200 or 1:250 generally, except for the site plan which is to be presented in a scale of 1:500.

13.3.5

Site and layout plans shall show the following items :

Plan for development works within the railway corridor shall be submitted to the Authority for approval in accordance with Regulation 4.

Application for Approval Development Proposal

of 

(a) Scale of plans;

An appli applica cati tion on for for the app appro rova vall of  development proposal shall be accompanied by one set of the following items :

(b) Location and clearances of the  proposed  proposed developm development ent works works in relation to the railway area; and (c) Basement line (if any).

(a) Plan for development works; and 13.3.6 (b) Engineering evaluation report accompanied by plan for engineering works.

13.3 13.3

(a) Scale of the plans; (b) Platform levels of the proposed development works; and

Info Inform rmat atio ion n To To Be Indi Indica cate ted d On Plan Plan for Development Works

13.3.1

Plan for development works shall be  prepared  prepared in accordanc accordancee with the requirements of the Regulations.

13.3.2

The first sheet of the plan shall bear the standard declarations as given below : I, _______________________, NRIC no/ Passport no, ________________,  being the qualified person appointed under Regulation 5(3) of the Rapid Transit Systems (Development and Building Works in Railway Corridor  and Railway Protection Zone) Regulations, hereby certify that the development or building works within the railway corridor as shown on these  plans have been designed in accordance with the Code of Practice for Railway Protection and any other  conditions that the Land Transport Authority may impose.

Code of Practice for Railway Protection

Sections and elevations shall show the following items :

(c) Minimum clearance between  proposed development works and the railway area.

13.4

Approval of Development Proposal

13.4 13.4.1 .1

The The Aut Autho horit rity y will will appr approv ovee the the development proposal in writing if the following requirements are complied with : (a) Qualified person has complied with the requirements of Clauses 13.2 and 13.3 hereof and that all items submitted are found to be order; and (b) Qualified person has fully demonstrated and confirmed that it is feasible for the development works to fully fully meet the technical tec hnical requirements of  of Section 16 .

36

13.5 13.5

Depa Depart rtur uree or Approved Plan

Devia eviati tion on

13.5.1

In accordance with Regulation 5, amendment plan shall be submitted to the Authority for approval if any development works depart or deviate from the approved  plan.

13.5.2

 No person shall carry out any development works in departure or  deviation from the approved plan unless the amendment plan has been approved.

Code of Practice for Railway Protection

from from

37

SECTION 14 BUILDING PROPOSAL WITHIN RAILWAY CORRIDOR

14.1

General

14.1.1

This section stipulates the procedures and requirements for obtaining approval for a building proposal within the railway corridor.

14.1.2

Plan for building works within the railway corridor shall be submitted to the Authority for approval in accordance with Regulation 4.

(c) Location and clearances of the building works in relation to the railway area and railway corridor; (d) Basement outline (if any); and (e) Main roads landmarks. 14.3.6

including

special

Sections and elevations shall show the following items : (a) Scale of the plans;

14.2 14.2

14.2.1 14.2.1

Appl Applic icat atio ion n for for Appr Approv oval al of Buil Buildi ding ng Proposal

(b) Building and boundary lines of  building;

An appli applica cati tion on for for the app appro rova vall of  building proposal shall be accompanied by one set of the following items :

(c) Horizontal and vertical clear distances between the railway area and the proposed development; and

(a) Plan for building works; and (d) Depth of basement (if any). (b) Engineering evaluation report accompanied by plan for engineering works.

14.3 14.3

Info Inform rmat atio ion n To Be Indi Indica cate ted d On Plan Plan for Building Works

14.3.1

Plan for building works shall be prepared in accordance with the requirements of the t he Regulations.

14.3.2

The first sheet of the plan shall bear the relevant standard declarations declarations as given in Clause 13.3.2. 13.3.2.

14.3.3

The qualified person shall sign on every sheet of the plans and be responsible for the accuracy of the details indicated.

14.3.4

The plan shall be drawn to a scale of 1:100 or 1:200 or 1:250 generally, except for the site plan which is to be presented in a scale of 1:500.

14.3.5

14.4

Approval of Building Proposal

14.4.1

The Authority will grant approval for the building proposal in writing if the following requirements are complied with : (a) Qualified person has complied with the requirements of Clauses 14.2 and 14.3 hereof and that all items submitted are found to be in order; and (b) The building and engineering works layout fully satisfy satisfy the technical technical requirements of Section 16 .

14.5

Departure or Approved Plan

14.5.1

In accordance with Regulation 5, amendment plan shall be submitted to the Authority for approval if any building works depart or deviate from the approved plan.

14.5.2

No person shall carry out any building works in departure or deviation from the approved plan unless the amendment plan has been approved.

Site and layout plans shall show the following items : (a) Scale of the plans; (b) Building and boundary lines of  building;

Code of Practice for Railway Protection

Deviation

from

38

SECTION 15 ENGINEERING WORKS WITHIN RAILWAY CORRIDOR

15.1

General

15.4

Engineering Evaluation Report

15.1.1 15.1.1

This This sectio section n stipu stipulat lates es the the proced procedure uress and requirements for obtaining a permit to commence engineering works within the railway corridor.

15.4.1

Engineering evaluation report shall be prepared and endorsed by a qualified person.

15.4.2

The evaluation report shall include an assessment of the likely effects of the construction and operation of the proposed rapid transit systems on the proposed development.

15.4.3

The report must clearly demonstrate that the design of the proposal has taken into consideration the effects due to the construction and operation of the proposed rapid transit systems.

15.4.4

Notwithstanding the above, the Authority reserves the right to specify any other requirements on the engineering evaluation report which are deemed necessary for the safeguarding of the proposed rapid transit systems.

15.5

Commencement of Work

15.5.1

The Authority will issue the permit to commence works in writing if the following requirements are complied with :

15.1.2 15.1.2

In acco accorda rdance nce with with Regu Regulat lation ion 6, an an application for a permit to commence any works for which the plans have been approved under Regulation 4 or 5 shall be made.

15.2

Application for for Permi rmit

15.2.1 15.2.1

An applic applicati ation on for for perm permit it to comme commence nce a specific phase of engineering works within the railway corridor shall be accompanied by one set of the following items : (a) Plan for engineering works; (b) Engineering evaluation report; (c) Construction schedule for proposed development; and

the

(c) Relevant documents indicating planning approval from the competent authority.

15.3 15.3

Plan Plan for for Engi Engine neer erin ing g Work orks

15.3.1

Plan for engineering works shall be prepared in accordance with the requirements of the Regulations and endorsed by a qualified person.

15.3.2

(a) Qualified person has complied with the requirements of Clauses 15.2, 15.3 and 15.4 hereof and that all items submitted are found to be in order; and (b) Qualified person has fully demonstrated that the proposal satisfies sat isfies the technical requirements of  Section 16 .

Layout plans and cross sectional details shall indicate the following items : 15.5.2

Clearance from the Development & Building Control Department of the Authority shall be obtained before the commencement of construction works including soil investigation and foundation works on site.

15.6 15.6

Depar epartu ture re or Approved Plan

15.6.1

In accordance with Regulation 5, amendment plan shall be submitted to the Authority for approval if any building

(a) Scale of the plans; (b) Building and boundary lines of  building; and (c) Vertical and horizontal distances of  the engineering works in relation to the railway area.

Code of Practice for Railway Protection

Devi Deviat atio ion n

from from

39

works depart or deviate from the approved  plan. 15.6.2

 No person shall carry carry out any building building works in departure or deviation from the approved plan unless the amendment plan has been approved.

15.7

Completion of Works

15.7.1

Upon completion of building works within the railway corridor, the qualified  person  person shall make make an applicatio application n to the Authority to issue clearance for the release of the certificate of statutory completion.

Code of Practice for Railway Protection

15.7.2

An application for clearance of certificate of statutory completion shall be accompanied by one set of the as-built  building,  building, structural structural and foundation foundation plans plans signed by the qualified person.

15.7.3

The Authority will issue clearance for  the release of certificate of statutory completion in writing if the qualified  person has complied with the requirements of Clause 15.7.2 hereof and that all items submitted are found to be in order.

40

SECTION 16 TECHNICAL REQUIREMENTS FOR  DEVELOPMENT AND BUILDING WORKS WITHIN RAILWAY CORRIDOR 

16.1

General

16.1.1 16.1.1

This This sect section ion stipula stipulates tes the genera generall technical requirements for any development and building works within the railway corridor.

16.1.2  Notwithstanding the provisions in this section, the Authority reserves the right to impose any other requirements that are deemed necessary for the safeguarding of the rapid transit systems.

16.2

Technical Requirements

16.2.1

Development and building works within the railway corridor shall comply with the requirements below : (a) The design and construction of the  proposed development shall be in

Code of Practice for Railway Protection

compliance with the Code of  Practice for Railway Protection and any other conditions under which the plans and amendments are cleared. (b) The proposed development may be affected by changes in ground conditions, vibration and noise as a result of the construction and the operation of the proposed rapid transit systems. The design of the  proposal shall take into consideration the above effects. (c) The maximum stress increase in ground at the proposed rapid transit systems structure arising from the  proposed development shall not exceed 22.5 kN/m 2. (d)  No deep foundation is permitted within the railway area and within 3m from it.

41

Appendices APPENDIX

A

Structure of Code

B

Submission Process for Development and Building Works within Railway Protection Zone

C

Standard Format for Emergency Procedure

D

Definitions of Compressible Soils

E

Guidelines for Instrumentation Proposal

F

List of Drawings

G

Application Forms

Appendix A

STRUCTURE OF CODE Code of Practice for Railway Protection

Introduction

Section 1 General Section 2 Structure of Code Section 3 Consultation and Request for  Information

Requirements for  Proposal within Railway Protection Zone

Requirements for  Proposal within Railway Corridor 

Section 4 Development Proposal within Railway Protection Zone

Section 13 Development Proposal within Railway Corridor 

Section 5 Building Proposal within Railway Protection Zone

Section 14 Building Proposal within Railway Corridor 

Section 6 Engineering Works within Railway Protection Zone Section 7 Supervision of Works within Railway Protection Zone Section 8 Access to Track and Station Premises

Appendices

A

Structure of Code

B

Submission Process for Development and Building Works within Railway Protection Zone

Section 15 Engineering Works within Railway Corridor 

C

Standard Format for Emergency Procedure

Section 16 Technical Requirements for Development and Building Works within Railway Corridor 

D

Defin efinit itio ions ns of  Compressible Soils

E

Guidelines for  Instrumentation Proposal

F

List of Drawings

G

Application Forms

Section 9 Installation of Instruments in Trainw Trainway ay Section 10 Technical Requirements for Development and Building Works within Railway Protection Zone Section 11 Performance Provisions Section 12 Acceptable Construction

A–1

Appendix

SUBMISSION PROCESS FOR DEVELOPMENT AND B UILDING WORKS WITHIN RAILWAY PROTECTION

ZON E

Start

Abbreviations : Authority - Land Transport Authority CPRP - Code of Practice for Railway Protection RTS - Rapid Transit Systems QP - Qualified Person DP - Development Proposal BP - Building Proposal CSC - Certificate of Statutory Completion WD - Written Directions

QP prepares application for approval of  DP according to CPRP S ection 4

QP submits application for approval of DP

Is submission acceptable?

* Release of permit to commence work shall be subjecte d to the granting of planning approval from the competent Authority.  No

QP complies with WD

Yes Developer commences works

Authority approves DP

QP prepares application for  approval of BP according to CPRP Section 5

A

QP supervises construction works according to CPRP Section 7 till completion

QP prepares engineering work   proposal according according to CPRP Section 6

QP submits application for approval of BP

QP prepares application for  CSC clearance according to CPRP Section 7

QP submits application for  Permit to Commence Works

QP submits application for CSC clearance Is submission acceptable?

 No

QP complies with WD

Is submission acceptable?

Yes

 No QP complies with WD

Yes

Is submission acceptable?

 No

QP complies with WD

Authority approves BP Authority issues Permit to Commence Works*

Yes Authority releases CSC clearance

Go to A if Permit to Commence Works not submitted yet

End

B–1

Appendix C STANDARD FORMAT FOR EMERGENCY EM ERGENCY PROCEDURE

1

General

1.1

This section serves to standardise the format for an emergency procedure write-up. It aims to ensure that a set of the procedure is in place for  immediate implementation should an emergency situation posing danger to the rapid transit systems happens at site.

2

Identification of Emergency Situations

2.1

An emergency situation may arise due to various incidents at site. Such incidents may include the following : (a) Monitoring results exceed the trigger levels specified by the qualified person; (a) Accidents such as construction material falls onto the viaduct, crane topples onto the viaduct,

3

Format for An Emergency Procedure Write-up

3 .1

An em emergen rgency cy proc rocedure wri writte-u e-up shall include the following items (a) Descriptions of the project and  proposed works or activities to be carried out within the railway  protection zone; (b) List of possible emergency situations that may arise due to the  proposed works or activities; (c) Governing criteria for initiating an emergency procedure; (d) Step-by-step procedure or flow chart showing the actions to be taken by the qualified person and the project team should an emergency happens. Where applicable, the procedure shall incorporate the steps to review the monitoring results obtained, the

B

Appendix C STANDARD FORMAT FOR EMERGENCY EM ERGENCY PROCEDURE

1

General

1.1

This section serves to standardise the format for an emergency procedure write-up. It aims to ensure that a set of the procedure is in place for  immediate implementation should an emergency situation posing danger to the rapid transit systems happens at site.

2

Identification of Emergency Situations

2.1

An emergency situation may arise due to various incidents at site. Such incidents may include the following :

2.2

Format for An Emergency Procedure Write-up

3 .1

An em emergen rgency cy proc rocedure wri writte-u e-up shall include the following items (a) Descriptions of the project and  proposed works or activities to be carried out within the railway  protection zone; (b) List of possible emergency situations that may arise due to the  proposed works or activities; (c) Governing criteria for initiating an emergency procedure; (d) Step-by-step procedure or flow chart showing the actions to be taken by the qualified person and the project team should an emergency happens. Where applicable, the procedure shall incorporate the steps to review the monitoring results obtained, the re-examination of the method of  work, the revision to the  predictions, the review of  instrumentation provisions, the contingency measures to be implemented, etc.

(a) Monitoring results exceed the trigger levels specified by the qualified person; (a) Accidents such as material falls onto crane topples onto water ingress into  premises, etc.

3

construction the viaduct, the viaduct, the station

The qualified person is fully responsible for identifying all  possible emergency situations that may arise due to the proposed works or activities and plan the immediate actions to be taken in the event of an emergency in order to safeguard the integrity of the rapid transit systems. In addition, the follow-up actions to  be taken after the implementation of  control measures at site should also  be provided.

(e) Call-up list stating the names and contact numbers of all key personnel including the qualified person, the project manager, the site supervisors, the instrumentation specialist. A flow chart for the emergency reporting shall also be included.

C–1

Appendix D DEFINITIONS OF COMPRESSIBLE SOILS

Compressible soils shall be taken as fills and soils of Kallang, Tekong and Transitional members as defined below :

KALLANG FORMATION

(a)

Reef member (Kr): Coral, unconsolidated calcareous sand and lesser quartz, ferruginous and lithic sand;

(b)

Transitional member (Kt): Unconsolidated black to blue-grey estuarine mud, muddy sand or sand, often with a high o rganic content and peat layers;

(c)

Littoral Member (Kl): Well sorted unconsolidated beach and near-shore quartz sand with minor laterilic shell and lith ic fragments. Iron-cemented  beach rock is also included in this member;

(d)

Alluvial Member (Ka): A variable terrestrial sedi ment ranging from pebble  beds through sand, muddy sand and clay to peat. The member is usually unconsolidated but lightly consolidated beds may be found; or 

(e)

Marine Member (Km): Dominantly a blue-grey clayey mud but peat and sand horizons are also present. The member is usually unconsolidated but lightly consolidated beds do occur.

TEKONG FORMATION (T): Unconsolidated marine and littoral well sorted sand with minor pebble beds and wood.

D

–1

Appendix E GUIDELINES FOR INSTRUMENTATION PROPOSAL 1

General

1.1

This set of guidelines serves to stipulate the minimum requirements on instrumentation proposal to enable close monitoring of the effects of any development or building works on the rapid transit systems structure, tracks and the ground.

1.2

(c) Readings shall be obtained at time interval that is practically continuous; (d) Capable of measuring the absolute displacement and distortion of the rapid transit transit systems systems structure;

The Authority reserves the right to impose any additional requirements deemed necessary to safeguard the rapid transit systems.

2

Provision of Instrumentation

2.1

The types and quantities of instruments to be provided will largely depend on major factors such as the configurations of  construction works, the closeness of these works to the rapid transit systems structure, the method of construction, the soil conditions on site, etc.

2.2

(b) Appropriate features should should be incorporated into the system to take readings only when a train is not passing by to reduce these effects;

(e) The instrument shall be able to automatically start each measurement cycle at the pre-set time and stored the produced record for later retrieval; (f) The system accuracy shall be better than ±1mm; in 50m taking into consideration the effects of train operation and changes in ambient conditions such as vibration, changes in air pressure and temperature

The types of instruments and frequency of monitoring shall, however, comply with the minimum requirements given in Table E-1. E-1.

3

Automatic Trainway Monitoring System and Manual Survey

3.1

Extent of Monitoring

3.1.1

The extent of monitoring shall extend at least 20m beyond the predicted influence zone of the works. The spacing of the targets in this area shall not be more than 5m.

3.1.2

Within the predicted influence zone of works, the spacing of targets in the rapid transit systems tunnels and stations shall not be more than 3m and 5m apart respectively.

3.1.3

Each monitored section consists of 4 units of targets mounted at the crown, track slab and side walls.

3.2

Automatic System

3.2.1

Automatic trainway monitoring system shall satisfy the requirements below:

Trainway

(g) The monitoring readings obtained for two consecutive readings at the same monitoring point when not disturbed by construction activities or train operation, etc (for example, at night) shall not deviate from each other by more than 0.5mm; and (h) The software used for operating the automatic monitoring shall be reliable with proven performance in other projects of similar capacity and conditions. The track record of the application software used in other projects shall be submitted for approval.

Monitoring

(a) Capable of taking measurement during the period when the trains are in operation.

E–1

3.2.2

All control points or datum for measurements shall be located outside the influence zone of the proposed works.

3.2.3

The automatic monitoring should be supplemented with manual physical survey monitoring of movement of the rapid transit systems structure conducted by registered land surveyor at regular intervals as a check on the performance and results of the automatic system. Manual survey shall satisfy the requirements Clause 3.3.

Appendix E 3.3

Manual Survey

3.3. 3.3.1 1

Manu Manual al surv survey ey shal shalll requirements below:

(d) Manual survey as a check for the automatic monitoring system shall  be based on the same co-ordinate system and absolute co-ordinate shall be correlated.

sat satis isfy fy the the

(a) The instrument used for manual system shall have an accuracy of  at least 1 ″ (Arc second) and a distance accuracy of 1mm ± 2ppm.

3 .4

Calibration of Instrumentation Equipment

The total station used for monitoring shall be calibrated once at every 6 months interval by an accredited testing laboratory. Certification of the monitoring equipment shall be submitted to the Authority for  verification.

(b) The manual system shall be a motorised total station with automatic target detection and acquisition. (c) Initial manual survey shall be carried out minimum 2 times for  all monitoring points and control  points once installation work is completed in order to establish an accurate datum for referencing in all future monitoring. The average of the 2 readings taken shall be the initial base reading.

3.5

Left-in Anchor and Bolt

The type of anchor and bolt to be used for supporting installation in the train way is standardised to HKD-SKR or  equivalent. The material shall be stainless steel. The anchor should be 30mm long and 10mm in diameter. The bolt should be 8mm in diameter.

E–2

Appendix E Table E-1 Provision of Instrumentation for Construction Activities within the Railway Protection Zone For Underground, Transition, Sub-aqueous & At Grade Structures 1st Reserve Type of Instruments

   *    *    *    d   n   u   o   r   g   n    I

2nd Reserve

3rd Reserve

Foundation Works (if permitted)

Excavation Works* (if permitted)

Foundation Works

Excavation Works*

Foundation Works

Excavation Works*

Inclinometer 

√

√

√

√

√

√

Waterstandpipe

√

√

√

√

√

√

Piezometer 

√

√

√

√

√

√

Settlement or  Heave Marker 

x

√

x

√

x

x

Automatic Trainway Monitoring System

  s   m   e    t   s   y    S    t   r   e    i   s   u Manual Survey**   n   t   a   c   r   u   r Tilt meter     T   t    S    d    i   p   a    R Vibration Sensor    n    O

See note 1 below

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

Crack meter 

See note 2 below

See note 3 below

 For Above Ground Structures 1st Reserve Type of Instruments

   *    *    *    d   n   u   o   r   g   n    I

  e    t   r    i   s   t   u   n   c   a   u   r   r    T   t    d   S    i   p   s   a   m    R   t   e   n   s   y    O   S  Note: (1) (2) (3) * **

***

Outside 1 st Reserve

Foundation Works (if permitted)

Excavation Works* (if permitted)

Foundation Works

Excavation Works*

Inclinometer 

√

√

√

√

Waterstandpipe

√

√

√

√

Piezometer 

√

√

√

√

Settlement or Heave Marker 

x

√

x

x

Manual Survey*

√

√

√

√

Tilt meter 

√

√

√

√

Vibration Sensor 

See note 2 below

Crack meter

See note 3 below

Required if predicted cumulative cumulative movement of rapid transit systems structure due to all construction activities within the railway  protection zone zone exceeds 5mm Required if method of work is likely to generate any vibration vibration at the rapid transit systems structure Required if there are existing cracks that are likely to be aggravated by the development works or where works affects tunnel and station interface This This requ require iremen mentt does does not apply apply to trench trench excava excavatio tion n work workss (of (of less less than than 2m deep) deep) for for laying laying servic services. es. Frequency of Manual Survey shall comply with the following requireme nts: (a) Where no automatic trainway monitoring system (ATMS) (ATMS) is installed, manual survey shall be carried out at least once a week for  works within the 1 st and 2nd reserve; and (b) Where ATMS is installed, Once a month to counter check the ATMS readings and the stability of control points Once every week if auto reading exceeds trigger value of  10mm Frequ Frequenc ency y of of taki taking ng grou ground nd inst instrum rument ent readin readings gs shall shall be dail daily y for for work workss withi within n the the 1st and 2nd reserves; and at least twice a week for  rd works within the 3 reserve.

E–3

Appendix F LIST OF DRAWINGS

LTA/DBC/CPRP/001

Definitions of reserve lines and zone of infl uence for bored tunnel

LTA/DBC/CPRP/002

Definitions of reserve lines and zone of influence for underground underground and transition structures

LTA/DBC/CPRP/003

Definitions of reserve lines and zone of infl uence for at grade structure

LTA/DBC/CPRP/004

Definitions of reserve lines and zone of infl uence for above ground structure

LTA/DBC/CPRP/005

Trainway cross sectional details for bored tunnel

LTA/DBC/CPRP/006

Trainway cross sectional details for box tunnel

LTA/DBC/CPRP/007

Trainway cross sectional details for viaduct

LTA/DBC/CPRP/008

Demarcation details for first reserve line

LTA/DBC/CPRP/009

Typical double casing debonding details

LTA/DBC/CPRP/010

Typical single casing debonding details

LTA/DBC/CPRP/011

Interpretation of track criteria

RAILWAY SAFETY ZONE RAILWAY PROTECTION ZONE 2nd RESERVE (D1-3)

3rd RESERVE

1st RESERVE

2nd RESERVE (D2-3)

40m

3rd RESERVE

40m 6m

6m

60m

60m

   )    1    D    (    H    T    P    E    D

6m

CL

CL

Varies

   )    2    D    (    H    T    P    E    D

6m

ZONE OF INFLUENCE 45°

TUNNEL AXIS LEVEL

45°

RAIL LEVEL

TUNNEL AXIS LEVEL RAIL LEVEL

6m.Nom

  m   m    8    4    5    1

Date

Scale

Drawing Title :

Not to Scale

Land Transport

 August 2000

DEFINITIONS OF RESERVE LINES AND

Authority

Drawing No. :

ZONE OF INFLUENCE FOR BORED TUNNEL

Rev.

0

LTA/DBC/CPRP/001

RAILWAY SAFETY ZONE

RAILWAY PROTECTION ZONE 3rd RESERVE

1st RESERVE

2nd RESERVE (D1-3)m OR 10m WHICHEVER IS GREATER

2nd RESERVE

3rd RESERVE

(D2-3)m OR 10m WHICHEVER IS GREATER 40m

40m

60m

60m

6m

6m

3m

3m

 E L  D L E V  R O U N  N G G  S T I N  E X I S

   )    2    D    (

ZONE OF INFLUENCE

   )    1    D    (

   H    T    P    E D

Cut & Cover Tunnels

   H    T    P    E    D

OR Underground Stations 45°

45°

Note :

Where toes are provided to the cut & cover tunnels or underground stations, the zone of influence of the MRT starts at 3m away from the tip of the toes, and the 1st reserve starts at 6m away from the tip of the toes.

Date

Scale

Drawing Title

Not to Scale

Land Transport

Authority

 August

DEFINITIONS OF RESERVE LINES AND ZONE OF INFLUENCE FOR UNDERGROUND AND TRANSITION STRUCTURES

Drawing No. LTA/DBC/CPRP/002

Rev.

0

RAILWAY SAFETY ZONE

RAILWAY PROTECTION ZONE 3rd RESERVE

1st RESERVE

2nd RESERVE (D1-3)m OR 10m WHICHEVER IS GREATER

2nd RESERVE

3rd RESERVE

(D2-3)m OR 10m WHICHEVER IS GREATER 40m

40m

60m

60m

6m

6m

3m

3m

 E L  D L E V  R O U N  N G G  S T I N  E X I S

   )    2    D    (    H    T    P    E D

ZONE OF INFLUENCE

   )    1    D    (

Cut & Cover Tunnels

   H    T    P    E    D

OR Underground Stations 45°

45°

Note :

Where toes are provided to the cut & cover tunnels or underground stations, the zone of influence of the MRT starts at 3m away from the tip of the toes, and the 1st reserve starts at 6m away from the tip of the toes.

Date

Scale

Drawing Title

Not to Scale

Land Transport

 August

DEFINITIONS OF RESERVE LINES AND ZONE OF INFLUENCE

Authority

Drawing No. LTA/DBC/CPRP/002

FOR UNDERGROUND AND TRANSITION STRUCTURES

Rev.

0

RAILWAY SAFETY ZONE RAILWAY PROTECTION ZONE 2nd RESERVE

3rd RESERVE

(10m)

1st RESERVE (VARIES) 6m

(Limit Of Structure)

3rd RESERVE

2nd RESERVE 6m

(10m)

40m

40m 60m

60m Outside Face Of  Fence Or Wall

Outside Face Of  Fence Or Wall

Existing Ground Level

EMBANKMENTS

RAILWAY SAFETY ZONE RAILWAY PROTECTION ZONE 2nd RESERVE

3rd RESERVE

(10m)

6m

1st RESERVE (VARIES) (Limit Of Structure)

2nd RESERVE 6m

40m

3rd RESERVE

(10m) 40m

60m

60m Outside Face Of  Fence Or Wall

Outside Face Of  Fence Or Wall

 o u n d  r o  in g G  s t i  n  E x i s

Level Lev

CUTTINGS

Date

Scal

Drawing Title

Not to

Land Transport

Authority

 August

DEFINITIONS OF RESERVE LINES AND ZONE OF INFLUENCE FOR AT GRADE STRUCTURE

Drawing No. LTA/DBC/CPRP/003

Rev.

0

RAILWAY SAFETY ZONE RAILWAY PROTECTION ZONE 2nd RESERVE

3rd RESERVE

1st RESERVE (VARIES)

(10m)

6m

3rd RESERVE

2nd RESERVE

(Limit Of Structure)

(10m)

6m

40m

40m 60m

60m Outside Face Of  Fence Or Wall

Outside Face Of  Fence Or Wall

Existing Ground Level

EMBANKMENTS

RAILWAY SAFETY ZONE RAILWAY PROTECTION ZONE 2nd RESERVE

3rd RESERVE

(10m)

6m

2nd RESERVE

1st RESERVE (VARIES) (Limit Of Structure)

3rd RESERVE

(10m)

6m

40m

40m

60m

60m Outside Face Of  Fence Or Wall

Outside Face Of  Fence Or Wall

 o u n d  r o  in g G  s t i  n  E x i s

Level Lev

CUTTINGS

Date

Scal

Drawing Title

Not to

Land Transport

Authority

 August

DEFINITIONS OF RESERVE LINES AND Drawing No. LTA/DBC/CPRP/003

ZONE OF INFLUENCE FOR AT GRADE STRUCTURE

Rev.

0

RAILWAY SAFETY ZONE

RAILWAY PROTECTION ZONE 1st RESERVE 6m

6m

40m

40m

60m

60m

Viaduct Column Existing Ground Level Level Top Of Pilecap

1.5m Generally

PILECAP

Date

Scale

Drawing Title :

Not to Scale

Land Transport

Authority

 August 2000

DEFINITIONS OF RESERVE LINES AND ZONE OF INFLUENCE FOR ABOVE GROUND STRUCTURE

Drawing No. :

LTA/DBC/CPRP/004

Rev.

0

RAILWAY SAFETY ZONE

RAILWAY PROTECTION ZONE 1st RESERVE 6m

6m

40m

40m

60m

60m

Viaduct Column Existing Ground Level Level Top Of Pilecap

1.5m Generally

PILECAP

Date

Scale

Drawing Title :

Not to Scale

Land Transport

Authority

 August 2000

DEFINITIONS OF RESERVE LINES AND Drawing No. :

ZONE OF INFLUENCE FOR ABOVE GROUND STRUCTURE

LTA/DBC/CPRP/004

Scale 1 : Chainage = Tunnel Profile Facing Toward

Station

TRACK GEOMETRY Cant = X 

Show Dimensions Of  Instrument & Bracket

 X 

Horizontal Throw = Versine =  X 

Y

S  t   r  u   c  t  u   r  e 

S  t   r  u   c  t  u   r  e 

      X G      a     u       g     e    

Y

G      a     u       g     e    

 X 

Show Dimensions Of  Instrument & Bracket

 W  i     t     h   T   h   r    o  w

      X

Inner rail edge

Lower Rail

Throw  X 

Rev.

0

Scale 1 : Chainage = Tunnel Profile Facing Toward

Station

TRACK GEOMETRY Cant = X 

Show Dimensions Of  Instrument & Bracket

 X 

Horizontal Throw = Versine =  X 

Y

S  t   r  u   c  t  u   r  e 

S  t   r  u   c  t  u   r  e 

      X G      a     u       g     e    

Y

G      a     u       g     e    

 X 

Show Dimensions Of  Instrument & Bracket

 W  i     t     h   T   h   r    o  w

      X

Inner rail edge

Throw  X 

Lower Rail

Tunnel Structure

   f    O   l    i    e    a    g    R    d    r    E   e    r   w    e    o    n    L    n    I

Enlarge Geometry Of Track Not to Scale

Cant

Guage = 1435 mm

Lower Rail

Note : 1. Dimensions in mm 2. " X   X " indicates site measurement. 3. "Y" indicates computed value.

Drawing Title :

Scale Not to Scale

Land Transport

Authority

Date  August 2000

TRAINWAY CROSS SECTIONAL DETAILS FOR BORED TUNNEL

Drawing No. :

LTA/DBC/CPRP/005

Rev.

0

Scale 1 : Chainage = TRACK GEOMETRY Cant = X  Horizontal Throw = Versine =  X 

Tunnel Profile Facing Toward

Station

Show Dimensions Of  Instrument & Bracket

 X 

Y

S  t   r  u   c  t  u   r  e 

S  t   r  u   c  t  u   r  e 

      X G      a     u       g     e    

Y

G      a     u       g     e    

 X 

 W  i     t     h 

Show Dimensions Of  Instrument & Bracket  X 

 X 

 T   h   r    o  w

      X

Inner rail edge

Throw  X 

Lower Rail

Tunnel Structure

   f    O   l    i    e    a    g    R    d    r    E   e    r   w    e    o    n    L    n    I

Enlarge Geometry Of Track Not to Scale

Cant

Guage = 1435 mm

Lower Rail

Note : 1. Dimensions in mm 2. 3.

" X   X " indicates site measurement. "Y "indicates computed value.

Drawing Title :

Scale Not to Scale

Land Transport

Authority

Date  August 2000

TRAINWAY CROSS SECTIONAL DETAILS FOR BOX TUNNEL

Drawing No. :

LTA/DBC/CPRP/006

Rev.

0

Scale 1 : Chainage = Track Profile Facing Toward

Station

TRACK GEOMETRY Cant =  X  Horizontal Throw = Versine =  X  S  t   r  u   c  t  u   r  e 

S  t   r  u   c  t  u   r  e 

G      a     u       g     e    

G      a     u       g     e    

 W  i     t     h 

Show Dimensions Of  Instrument & Bracket

 T   h   r    o  w

Y  X 

Throw       X

 X 

Lower Rail

Viaduct Structure

   f    O   l    i    e    a    g    R    d    r    E   e    r   w    e    o    n    L    n    I

Enlarge Geometry Of Track Not to Scale

Cant

Guage = 1435 mm

Lower Rail

Note : 1. Dimensions in mm 2. 3.

" X " indicates site measurement. "Y"indicates computed value.

Drawing Title :

Scale Not to Scale

Land Transport

Authority

Date  August 2000

TRAINWAY CROSS SECTIONAL DETAILS FOR VIADUCT

Drawing No. :

LTA/DBC/CPRP/007

Rev.

0

6m

500 X 300 mm

POLE TO BE PAINTED WITH RED PAINT (MIN. 500mm)

RED FLAG

M.S. PIPE (TO ENGR'S DESIGN) 75mm 5mm (FOR (FOR A 5m) 5m) 100m 100mm m (FOR (FOR 5m < A 10m) 10m)

'U' HOOK WELDED TO POLE WITH NYLON ROPE (ORANGE/RED)

WELDED JOINT (TO ENGR'S DESIGN)

MRT / LRT VIADUCT

500mmX400mm METAL SIGNBOARD, WHITE BASE WITH RED WORDING ' 1ST RESERVE '

 A

0.5A 30°

  m   m    0    0    5    1

100mm

NOTE : MAXIMUM SPACING FOR FOR INDICATORS SHALL BE SPACED AT 15 METER FOOTING ( TO ENGR'S DESIGN )

Date

Scale

Drawing Title :

Not to Scale

Land Transport

Authority

DEMARCATION DETAILS FOR FIRST RESERVE LINE

Drawing No. :

 August 2000

Rev.

0

LTA/DBC/CPRP/008

PILECAP

REBAR

CUT-OFF LEVEL

50mm THK LEAN CONCRETE COMPRESSIBLE MATERIAL PLUG TO PREVENT FALLING CONCRETE / DEBRIS INNER DEBONDING CASING WITH SELF ADHESIVE BITUMINOUS MEMBRANE SHEETS OF MIN. 3mm THK

   H    T    G    N    E    L    G    N    I    D    N    O    B    E    D

LOAD BEARING PILE

CEMENT BENTONITE GROUT

OUTER DEBONDING CASING TOE OF DEBONDING (INCLUDING CONSTRUCTION TOLERANCE)

PLUG TO PREVENT CEMENT GROUT INGRESS DURING CONCRETING

Date

Scale

Drawing Title :

Not to Scale

Land Transport

Authority

TYPICAL DOUBLE CASING DEBONDING DETAILS

Drawing No. :

LTA/DBC/CPRP/009

 August 2000

Rev.

0

PILECAP

REBAR

CUT-OFF LEVEL

50mm THK LEAN CONCRETE COMPRESSIBLE MATERIAL PLUG TO PREVENT FALLING CONCRETE / DEBRIS INNER DEBONDING CASING WITH SELF ADHESIVE BITUMINOUS MEMBRANE SHEETS OF MIN. 3mm THK

   H    T    G    N    E    L    G    N    I    D    N    O    B    E    D

LOAD BEARING PILE

CEMENT BENTONITE GROUT

OUTER DEBONDING CASING TOE OF DEBONDING (INCLUDING CONSTRUCTION TOLERANCE)

PLUG TO PREVENT CEMENT GROUT INGRESS DURING CONCRETING

Date

Scale

Drawing Title :

Not to Scale

Land Transport

Authority

TYPICAL DOUBLE CASING DEBONDING DETAILS

Drawing No. :

 August 2000

Rev.

0

LTA/DBC/CPRP/009

PILECAP

REBAR

CUT-OFF LEVEL

50mm THK LEAN CONCRETE PLUG TO PREVENT FALLING CONCRETE / DEBRIS SINGLE DEBONDING CASING WITH SELF ADHESIVE BITUMINOUS MEMBRANE SHEETS OF MIN. 3mm THK

   H    T    G    N    E    L    G    N    I    D    N    O    B    E    D

LOAD BEARING PILE

TEMPORARY CASING (TO BE REMOVED) CEMENT BENTONITE GROUT

TOE OF DEBONDING

PLUG TO PREVENT CEMENT GROUT INGRESS DURING CONCRETING

(INCLUDING CONSTRUCTION TOLERANCE)

Date

Scale

Drawing Title :

Not to Scale

Land Transport

Authority

TYPICAL SINGLE CASING DEBONDING DETAILS

Drawing No. :

LTA/DBC/CPRP/010

 August 2000

Rev.

0

PILECAP

REBAR

CUT-OFF LEVEL

50mm THK LEAN CONCRETE PLUG TO PREVENT FALLING CONCRETE / DEBRIS SINGLE DEBONDING CASING WITH SELF ADHESIVE BITUMINOUS MEMBRANE SHEETS OF MIN. 3mm THK

   H    T    G    N    E    L    G    N    I    D    N    O    B    E    D

LOAD BEARING PILE

TEMPORARY CASING (TO BE REMOVED) CEMENT BENTONITE GROUT PLUG TO PREVENT CEMENT GROUT INGRESS DURING CONCRETING

TOE OF DEBONDING (INCLUDING CONSTRUCTION TOLERANCE)

Date

Scale

Drawing Title :

Not to Scale

Land Transport

Authority

TYPICAL SINGLE CASING DEBONDING DETAILS

Drawing No. :

 August 2000

Rev.

0

LTA/DBC/CPRP/010

VERTICAL ALIGNMENT

HORIZONTAL ALIGNMENT

 AVERAGE RAIL LEVEL

B (mm) TRACK CENTRELINE

 A (mm)

L=15.8m

L=5m  A : MEASURED DIP OR PEAK RELATIVE TO L (m) CHORD

B : CORRESPONDING VERSINE MEASURED ON L (m) CHORD

TWIST W HEELB AS  ASE OF V EHICLE

W HEELB AS  ASE OF V EHICLE

D

C'

C

DIRECTION OF TRAVEL TWIST

TWIST

MEASURED CROSSLEVELS  AT A - D X mm B-C Y mm B' - C' Z mm VEHICLE WHEELBASE = L m

TWIST

 A B

B'

TWIST PRODUCED BY THE DIP AT BC WITH THE VEHICLE AT ABCD OVER L (m) = Y - X TWIST PRODUCED BY THE DIP AT B'C' WITH THE VEHICLE AT BB'CC' OVER L (m) = Z + Y

Date

Scale

Drawing Title :

Not to Scale

Land Transport

Authority

 August 2000

INTERPRETATION OF TRACK CRITERIA Drawing No. :

LTA/DBC/CPRP/011

Rev.

0

VERTICAL ALIGNMENT

HORIZONTAL ALIGNMENT

 AVERAGE RAIL LEVEL

B (mm) TRACK CENTRELINE

 A (mm)

L=15.8m

L=5m  A : MEASURED DIP OR PEAK RELATIVE TO L (m) CHORD

B : CORRESPONDING VERSINE MEASURED ON L (m) CHORD

TWIST W HEELB AS  ASE OF V EHICLE

W HEELB AS  ASE OF V EHICLE

D

C'

C

DIRECTION OF TRAVEL TWIST

TWIST

MEASURED CROSSLEVELS  AT A - D X mm B-C Y mm B' - C' Z mm VEHICLE WHEELBASE = L m

TWIST

 A B

B'

TWIST PRODUCED BY THE DIP AT BC WITH THE VEHICLE AT ABCD OVER L (m) = Y - X TWIST PRODUCED BY THE DIP AT B'C' WITH THE VEHICLE AT BB'CC' OVER L (m) = Z + Y

Date

Scale

Drawing Title :

Not to Scale

Land Transport

Authority

Drawing No. :

LTA/DBC/CPRP/011

Appendix G FORM NO. LTA DBC RAIL-SURVEY Application for Verification of Reserve Lines and Drilling Position s LTA DBC RAIL-SUPV Supervision of Works Within Railway Protection Zone LTA DBC RAIL-INSTR 

 August 2000

INTERPRETATION OF TRACK CRITERIA Rev.

0

Appendix G FORM NO. LTA DBC RAIL-SURVEY Application for Verification of Reserve Lines and Drilling Position s LTA DBC RAIL-SUPV Supervision of Works Within Railway Protection Zone LTA DBC RAIL-INSTR  Certificate of Supervision for Instrument Installation Works Within Trainway LTA DBC RAIL-ACCESS Application for Track Access LTA DBC RAIL-CSC-BW Certificate of Supervision of Building Works LTA DBC RAIL-CSC-PW Certificate of Supervision of Piling Works LTA DBC RAIL-CSC-SW Certificate of Supervision of Structural Works

FORM LTA DBC SURVEY

APPLICATION FOR VERIFICATION OF RESERVE LINES & DRILLING POSITIONS

Manger  Development and Building Control Land Transport Authority 251 North Bridge Road Singapore 179102 1

Instructions (1) This form must be duly completed and submitted to the Department 2 weeks in advance of work. (2) * Delete where not applicable.

Proj Projec ectt Titl Titlee and and Desc Descri ript ptio ion n of of Wor Works ks :  _______________________________________________________________________________   ______________________________________________________________ _________________ 

 _______________________________________________________________________________   ______________________________________________________________ _________________ 

2

Location :  _______________________________________________________________________________   ______________________________________________________________ _________________  I attached the following submissions for your verification : (a) Hardcopy of submission submission with the following shown*: Topography and ground feature details Cadastral Lot Information Railway Information, eg, track centreline & levels, track name, 1 st and 2nd reserve lines where applicable Cadastral coordinates of Ground Instrumentation positions/ offset distance fro m closest viaduct column List of instrument to be checked Certified by Registered Surveyor  (b) Virus Free Softcopy of the submission with the following requirements : Autocad R13 or Microstation Format Cadastral True X and Y positions Scale 1 : 1

4

I declar declaree that that the abov abovee inform informati ation on is corre correct ct and and hereby hereby seek seek your your clea clearan rance ce to : Commence the pegging of * bored holes/ piling positions on site for your inspection be fore drilling. Commence the pegging of reserve lines on site for your inspection. Others_________________________________________________________________________  (please tick)

 Name & Signature of Registered Surveyor

Address of Registered Surveyor 

Tel No. :

Fax No.

Date : Page 1 of 2

 For Official Use Only

Our Ref :

We have no objections to your proposal in item 4. You are allowed to commence works on site. Your  works shall comply with the Code of Practice for Railway Protection and the Rapid Transit Systems (Railway Protection, Restricted Activities) Regulations. The proposal falls outside the Railway Protection Zone. Clearance from us is not required. Our comments on the above application are listed on attached sheet. Please contact ____________________________ at Tel: _______________ or Fax: 3328223 for any enquiry.

for MANAGER (DEVT & BLDG CONTROL)

Page 2 of 2

FORM LTA DBC RAIL-SUPV

UNDERTAKING TO SUPERVISE WORKS WITHIN RAILWAY PROTECTION ZONE Manager  Development and Building Control Land Transport Authority 251 North Bridge Road Singapore 179102

Instructions (1) This form must be duly completed and submitted to the Authority together with the application for permit to commence work. (2) * Delete as appropriate.

SECTION I DETAILS OF WORKS Project Title :

*Lot/ Plot

*TS/MK

Road/ Street

SECTION II APPOINTMENT OF QUALIFIED PERSON

(1) I am the appointed qualified person responsible for the supervision of engineering works within the railway protection zone for the above project; (2) I undertake to fully discharge the duties stipulated in the Rapid Transit Systems (Development and Building Works in Railway Corridor and Railway Protection Zone) Regulations; and

(3) I will take reasonable steps and exercise due diligence to ensure that works are carried out in accordance with the approved  plans/details, the Code of Practice for Railway Protection and the Rapid Transit Systems (Development (Development and Building Works in Railway Corridor and the Railway Protection) Regulations.

SECTION III APPOINTMENT OF ASSIGNEE (IF APPLICABLE) (1) I hereby appoint ________________________________ to act on my behalf and to suitably discharge my responsibility as required in Section II above in the event of my absence. (2) The above assignee has the relevant qualification recognised by the Professional Engineer’s Board of Singapore and has at least three years of relevant site supervision experience. I attach a copy of the records on his qualifications and past working experience for your verifications and acceptance.

(3)  Notwithstanding  Notwithstanding such assignment, I shall be fully responsible for all actions taken by my assignee with or without my  prior consent consent or sanction. sanction.  Name & Signature Signature of Qualified Qualified Person

Company and Address Address of Qualified Qualified Person

Tel No.:

Fax No.:

Date:

Page 1 of 2

FORM LTA DBC RAIL-SUPV

 For Official Use If Section III Is Is Completed  We refer to your appointment of assignee in Section III. Please be informed that we have *no objection/ objection to the appointment of the above assignee. Please contact _____________________________________ at Tel: ______________________ or Fax: 3328223 for any enquiry.

for MANAGER (DEVT & BLDG CONTROL)

Page 2 of 2

FORM LTA DBC RAIL-INSTR 

CERTIFICATE OF SUPERVISION FOR INSTRUMENT INSTALLATION WORKS IN TRAINWAY

Manager  Development and Building Control Land Transport Authority 251 North Bridge Road Singapore 179102

Instructions (1) This form must be duly completed b y the appointed registered surveyor and professional engineer or their  assignee(s) and submitted to the Authority’s officer prior  to leaving the tunnel or trainway. (2) * Delete as appropriate.

SECTION I - PARTICULARS OF PROJECT

Project Title :

SECTION II - TO BE COMPLETED BY REGISTERED LAND SURVEYOR OR HIS ASSIGNEE

I certify that I have supervised and checked that all installation works within the rapid transit systems tunnel/ trainway were being carried out in accordance to the approved details.  Name & Signature of *Registered Land Surveyor/ Appointed Assignee

Address of *Registered Land Surveyor/ Appointed Assignee

Tel No.:

Fax No.:

Date:

SECTION III - TO BE COMPLETED COMP LETED BY PROFESSIONAL ENGINEER OR HIS ASSIGNEE

I certify that I have supervised and checked that all installation works within the rapid transit systems tunnel/ trainway were being carried out in accordance to the approved details and they are all securely fixed to the rapid transit systems structure.  Name & Signature of *Professional Engineer/ Appointed Assignee

Address of *Professional Engineer/ Appointed Assignee

Tel No.:

Fax No.:

Date:

FORM LTA DBC RAIL-ACCESS

APPLICATION FOR TRACK ACCESS

Manager  Development and Building Control Land Transport Authority 251 North Bridge Road Singapore 179102

Instructions: (1) The Qualified Person shall submit this form 2 weeks in advance of the intended date of track access. (2) This form must be duly completed and submitted to the Department for consideration. (3) The Department reserves the rights to grant any access and allocate suitable date(s) for the access.

PARTICULARS OF TRACK ACCESS

Project Title :

Specific Station/Location :

Intended date(s) of track access :

*Bound: East / West / North / South Purpose of track access(es)

Descriptions of works to be carried out :

List of equipment to be used :

 Name & Signature of Qualified Person

Company’s Name & Address of Qualified Person

Tel No.:

Fax No.:

Date:

 For Official Use Only Your application for track access has been approved. Please meet up with our assigned Work-inCharge (WIC) at the meeting place and time stated below. The application is rejected due to one of the follo wing reasons:You have not obtained our approval for the works to be carried out during track access. Please followup with our Engineer-in-Charge on your submission or re-submission. Your request for track access was deemed unnecessary.  Note: All person entering the station premises and track must strictly follow the instructions of the Person-inCharge and Work-in-Charge.  Name of Work-in-Charge:

Tel: Pager:

 Name & Signature of Engineer-in-Charge:

Meeting Place & Time with WIC :

Date:

FORM LTA DBC RAIL-CSC-BW

CERTIFICATE OF SUPERVISION OF BUILDING WORKS

Manager  Development and Building Control Land Transport Authority 251 North Bridge Road Singapore 179102

Instructions (1) This form shall be duly completed by the qualified  person appointed under Reg 9 of the Rapid Transit Systems (Development and Building Works in Railway Corridor and Railway Protection Zone) Regulations 2000 and submitted together with the application for the release of the Certificate of  Statutory Completion. (2) * Delete as appropriate.

PARTICULARS OF BUILDING(S)/BUILDING WORKS

Building Plan No(s): PWD BCD BP

*Lot/Plot

*TS/MK

Road/Street

Building Name (if any)

Description of *Building(s)/Building Works

Date of Completion

Remarks (if any)

I certify that I have supervised the erection of the *building(s)/building works and such *building(s)/building works have been carried out and completed in accordance with the approved building plans, the Code of Practice for Railway Protection and conditions imposed by LT A.  Name & Signature of Qualified Person

Company’s Name & Address of Qualified Person

Tel No.:

Fax No.:

Date:

FORM LTA DBC RAIL-CSC-PW

CERTIFICATE OF SUPERVISION OF PILING WORKS

Manager  Development and Building Control Land Transport Authority 251 North Bridge Road Singapore 179102

Instructions (1) This form shall be duly co mpleted by the qualified  person appointed under Reg 9 of the Rapid Transit Systems (Development and Building Works in Railway Corridor and Railway Protection Zone) Regulations 2000 and submitted together with the application for the release of the Certificate of  Statutory Completion. (2) * Delete as appropriate.

PARTICULARS OF PILING WORKS

Building Plan No(s): PWD BCD BP

Piling Plan Drawing No(s):

*Lot/Plot

*TS/MK

Road/Street

Building Name (if any)

Description of *Building(s) and Piling Works

Date of Completion

Remarks (if any)

I certify that I have supervised the piling works and that such works have been carried out and completed in accordance with the approved piling plan(s), the Code of Practice for Railway Protection and conditions imposed  by LTA.  Name & Signature of Qualified Person

Company’s Name & Address of Qualified Person

Tel No.:

Fax No.:

Date:

FORM LTA DBC RAIL-CSC-SW

CERTIFICATE OF SUPERVISION OF STRUCTURAL WORKS

Manager  Development and Building Control Land Transport Authority 251 North Bridge Road Singapore 179102

Instructions (1) This form shall be duly completed by the qualified  person appointed under Reg 9 of the Rapid Transit Systems (Development and Building Works in Railway Corridor and Railway Protection Zone) Regulations 2000 and submitted together with the application for the release of the Certificate of  Statutory Completion. (2) * Delete as appropriate.

PARTICULARS OF STRUCTURAL WORKS

Building Plan No(s): PWD BCD BP

Structural Plan Drawing No(s):

*Lot/Plot

*TS/MK

Road/Street

Building Name (if any)

Description of Building(s) and Structural Works

Date of Completion

Remarks (if any)

I certify that I have supervised the structural works and that such works have been carried out and completed in accordance with the approved structural plan and calculations, the Code of Practice for Railway Protection and conditions imposed by LTA.  Name & Signature of Qualified Person

Company’s Name & Address of Qualified Person

Tel No.:

Fax No.:

Date: