EXW-P006-0000-GS-SHC-MT-00003 Method Statement for Surveying and Setting Out Rev.1

SINOHYDRO GROUP LIMITED Doha Expressway

Package 6

East Industrial Road Interchanges at Intersection with Street 10 and Street 23 Contact No. C2011/085

Submitta ubmit tall Informa nfor matio tion n 1. Docum ent Number EXW-P006-0000-GS-SHC-MT-00003 2. Description Method Statement for Surveying and Setting Out 3. Pages 39 4. Revision Rev.1 5. Reference Number Nil 6. Country of Origin Qatar 7. BOQ Ref. 1.05 8. Specification Ref. QCS 2010, Section 1, Part 13 & 15

Doha – State of Qatar

 Tel:

+974-44126471  Fax: +974-44126471 +974-44126471

  www.sinohydro.com

SINOHYDRO GROUP LIMITED Doha Expressway

Package 6

East Industrial Road Interchanges at Intersection with Street 10 and Street 23 Contact No. C2011/085

Submitta ubmit tall Informa nfor matio tion n 1. Docum ent Number EXW-P006-0000-GS-SHC-MT-00003 2. Description Method Statement for Surveying and Setting Out 3. Pages 39 4. Revision Rev.1 5. Reference Number Nil 6. Country of Origin Qatar 7. BOQ Ref. 1.05 8. Specification Ref. QCS 2010, Section 1, Part 13 & 15

Doha – State of Qatar

 Tel:

+974-44126471  Fax: +974-44126471 +974-44126471

  www.sinohydro.com

SINOHYDRO GROUP LIMITED Doha Expressway

Package 6

East Industrial Road Interchanges at Intersection with Street 10 and Street 23 Contact No. C2011/085

Index 1. General Description of Package 6 Project 2. Purpose and Scope of Work 3. Specification and Standard 4. Abbreviations 5. Utilization of Existing Information 6. Manpower 7. Equipment 8. General Surveying Method 9. Process of Survey Works 10. Quality Assurance Procedure 11. Safety and Health H ealth Plan for survey works wor ks 12. Inspection Inspe ction & Testing Testing 13. Appendix  Appendix 1. List of Survey Equipment (Used on P6 Site)  Appendix 2.  Inspection for formation level/base slab/roof slab/backfilling surface of sheet  Appendix 3 . Inspection for formation level/base slab/roof slab/backfilling surface drawing  Appendix 4 . Setting Out for excavation sheet

Doha – State of Qatar

 Tel:

+974-44126471  Fax: +974-44126471 +974-44126471

  www.sinohydro.com

SINOHYDRO GROUP LIMITED Doha Expressway

Package 6

East Industrial Road Interchanges at Intersection with Street 10 and Street 23 Contact No. C2011/085  Appendix 5 . Manhole/chamber inspection for base slab level sheet  Appendix 6 . Inspection for level of the installed pipeline sheet  Appendix 7 . Formwork checking for kerb blinding  Appendix 8 Survey data for compacted ground/sub-grade/sub-base  Appendix 9 Inspection for kerb stone sheet  Appendix 10 Inspection deviation drawing for kerb stone

Doha – State of Qatar

 Tel:

+974-44126471  Fax: +974-44126471

  www.sinohydro.com

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

1 General Descr iption of Package 6 Project Package 6 of the Doha Expressway mainly covers the existing East Industrial Road  Alignment. The section of the road included in this contract, starts almost 850 m south of the Industrial Roundabout up to its junction with the extension of Al Muntazah Street 33 with a total length of about 3.5 km. The scope of work includes the upgrading of the existing East Industrial Road to provide a three lane in each direction for the mainline traffic. The local traffic will be served through a continuous service roads network providing safe and efficient movement between the main line traffic to the adjacent existing facilities along the route. scope of works include: a) Roads b) Junctions and interchanges c) Hard and soft landscape d) Potable Water supply and reticulation systems e) Irrigation supply and distribution systems f)

Wastewater system

g) Surface and ground water drainage system. h) Electrical supply and distribution networks including 66/11 kV i)

Telecommunications and ELV duct network

 j)

Road and amenity lighting

k) Traffic control and street signs

2 Purpose and Scope of Works 2.1 Purpose This plan provides the survey methodology and inspection scope adopted by Sinohydro for Survey Works.

2.2 Scope of Works 1) Benchmarks 2) Earthworks 3) Concrete Works 4) Manhole and Chamber

EXW-P006-00 00-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 1 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

5) Pipeline Works 6) Road Works

3 Specification and Standard Unless otherwise provided or required by the Engineer, following standards and specifications shall be used in performing survey works: a) Basic survey data source: Qatar National Grid (QNG) and Qatar National Height Datum (QNHD) b) Qatar Construction Specification 2010 c) Qatar Survey Manual d) Project General Specification e) Other Survey Specification f)

Information and document of Engineer

4 Abbreviations The following abbreviations are used in this Plan. GPS

Global Position System

GIS

Geographic information system

QNG

Qatar National Grid

QNHD

Qatar National Height Datum

TGO

Trimble Geomatics Office

TBC

Trimble Business Center

LGO

LEICA Geo Office

RTK

Real Time Kinematic

RFI

Request for Inspection

EXW-P006-00 00-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 2 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

5 Utilization of Existing Information Qatar National Benchmarks will be the basis for survey works, Benchmarks provided by center for GIS. Details please see Table 1 and Appendix 11． Table 1 Point

Horizontal Coordinates (QNG95)

No.

Vertical (QNHD95)

Easting

Northing

Used Elevation

570001

224096.741

382207.121

19.481

560046

223366.897

383367.888

20.618

560080

223109.127

383197.218

22.054

560047

222681.230

383860.419

---------

560048

222940.056

384007.725

---------

560061

222591.112

384553.745

---------

560062

222327.402

384396.843

---------

Before starting survey works,every Qatar national benchmark will be checked. Accroding checked result some benchmark not ues for this survey works.Benchmark of the above table is the first class control point for the construction. Some new benchmark will be established base on the condition of site survey during construction.

6 Manpower Total 5 personnel are involved in this work. According to the site actual situation, It increase suitably with the reduction surveyor. Details please see Table 2.

6.1

List of Perso nnel

Table 2 S/N

Name

Age

Work Experience

Position

1

Wang Shaolin

49

30

Survey Manager

2

Zhang jisheng

43

20

Site Survey Chief

3

Bao Yanjie

31

8

Office Survey Chief 

4

Qi Wanyi

25

2

Land Surveyor

5

Shen Jianchao

25

2

Land Surveyor

EXW-P006-00 00-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 3 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

6.2 Organizatio n Chart

Survey Manager Wang ShaoLin

Site SurveyChief Zhang JiSheng

Site Survey Team Shen JianChao,Qi WanYi

Office SurveyChief Bao YanJie

Office Surveyor Shen JianChao,Qi WanYi

7 Equipment 7.1 Survey Instru ment The following survey instrument should be involved in the site survey works. a) GPS Receiver 2 unit b) Total Station 1 unit c) Electronic Level 1 unit d) Automatic Level 1 unit  According to the actual site situation, It increase suitably with the reduction survey instrument. Survey instrument should be regular get of calibration certificate.

7.2 Survey Software The following software should be involved in the survey works. a) Trimble Geomatics Office (TGO) b) Trimble Business Center (TBC) c) LEICA Geo Office (LGO) d) AutoCAD e) Nikon Data Transfer

EXW-P006-00 00-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 4 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

7.3 Other Equip ment  According to work requirement, Computer and site vehicle will be involved in the survey works. Details equipment info please see appendix 1. List of Survey Equipment (Used on P6 Site).

8 General Surveying Metho d 8.1 Surveying Method for GPS 8.1.1 Static Survey GPS static measurements, is the use of measurement-based GPS receivers to locate a measurement. Mainly used to create various kinds of control net. Static GPS measurements carried out that the GPS receiver antenna in the location of the observation process is static, in data processing, it will be the location of the antenna as a receiver does not change over time, the amount of change, through the received satellite data to seek a change in the coordinates of points to be determined. In the measurement, GPS static measurements of the specific observation model is more than one receiver at different stations on the static synchronous observation time from 20 minutes to 10 hours range. Relevant Technical Index 

No.s of observation session≥1.8



Length of observation session: 25 minutes



Valid observation satellite:4 pcs



Geometry pattern strength PDOP≤6



Satellite height angle: 15°



Data collection interval 15s

8.1.2 RTK Survey Set up GPS base station on a benchmark. The tripod is erected on the benchmark and strictly centered. Antenna installed, Input point numbers and coordinates. And at least two benchmarks shall be surveyed for checking purpose. The two control-benchmarks will be surveyed at least 5 sec.

EXW-P006-00 00-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 5 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

8.2 Surveying Method for Total Station 8.2.1 Fixed Stati on Set up total station on a know benchmark. The tripod is erected on the benchmark and strictly centered. Input station and backsight point number and coordinates, and input instrument height. Observation backsight point and measurement coordinates record, and checking other benchmarks. If checking point coordinates exceed 10mm shall be re-set up station. The fixed station relevant Technical Index, please as following Figure1:“Sketch of Fixed Station”. 

Distance of survey point ≤Distance of BS.point



Accuracy of Check point ≤10 mm

Figure1: Sketch of Fixed Station

8.2.2 Free Station Set up total station on anywhere and strictly leveling. At least input two backsight point number and coordinates. Observation backsight point and measurement coordinates record,and checking other benchmarks. If checking point coordinates exceed 10mm shall be re-set up station. The free station relevant Technical Index, please as following Figure2:“Sketch of Free EXW-P006-00 00-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 6 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

Station”. 

Angle “r” is 30°~ 150°



Distance to “a” and “b”≤700 m



Distance of survey point ≤Distance of BS.point



Accuracy of Check point ≤10 mm between 90°~ 190°from BS. Point



Points surveyed from a free station shall be placed in site or here the polygon between the known points used for determine the free station point.

Figure2: Sketch of Free Station

8.3 Surveying Metho d for Leveling 8.3.1 Closed Leveling From the known elevation point of the beginning, and finally closed in fact point to the standard route. Single survey and middle thread reading method was adopted for the leveling survey, the sequence of reading is back-front-front-back. The reading is saved to the five places of decimal. 8.3.2 Annexed leveling From the known elevation point of beginning and end another known elevation point of standard route. Single survey and middle thread reading method was adopted for the leveling survey, the sequence of reading is back-front-front-back. The reading is saved to the five places of decimal.

EXW-P006-00 00-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 7 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

8.4 The Detailed Survey Procedure RFI from QA/QC Department

Setting-Out or Inspection

Approved Shop Drawings

Transfer Design Coordinates to GPS/Total Station

Uesing GPS,Total Station or Leveling for Setting-out/Inspection

Download GPS,Total station or Leveling survey raw data

Prepare data to sheet and autocad drawing (please see appendix)

Hand over hard copy and soft copy to QA/QC

 Not OK

Hand over hard copy and soft copy to Engineer acceptance

 Not OK

Engineer Approved And return to QA/QC

If the control / check survey shows that the result does not comply with the tolerance, the responsible engineer in the construction or QA/QC group shall be informed immediately. The result shall be submitted for the Engineer accept as soon as it have been completed.

EXW-P006-00 00-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 8 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

9 Process of Survey Works 9.1 Benchmarks 9.1.1 Tempor ary Bench marks a) Survey used instruments GPS and total station should be adopted for horizontal coordinates. Total station and level instrument should be adopted for vertical. b) Survey Method Horizontal control should be established by GPS static survey, opening and closing traverses, resection, intersection, free-station etc. Vertical control should be established by closed and annexed leveling line, total station triangulation etc. c) Tolerance Horizontal : Points position ±10mm, relative total length closing error of traverse 1/35000. Vertical : ± 4

L

mm (where L is the distance leveled in kilometers).

d) Results Submit  A RFI should be submitted for engineer acceptance, RFI including temporary benchmarks results, calculation processing for Horizontal and vertical.

9.1.2 Maint enance and Monito rin g for Benchmarks Site surveyors should be regular maintenance and monitoring the site benchmarks, Maintenance including point name, safety fence etc. Monitoring including horizontal and vertical coordinates checked. a) Monitoring Time Horizontal monitoring frequency: should be carried out every six months Vertical monitoring frequency: should be carried out every three months. b) Used Instrument Horizontal check should be used RTK-GPS Vertical check should be used level instrument. c) Checking Method Horizontal coordinates checking method: Set up GPS base station on a national benchmark 560046 provided by center for GIS. The tripod is erected on the benchmark and strictly centered. Antenna installed. Input point numbers for each point .Two groups of

EXW-P006-00 00-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 9 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

data were measured on each points. With min. 20 minute interval or counter check. The observation section were not less than 5 second and data were recorded . Vertical elevation checking method: One closed leveling line origins and terminates on the national benchmark 560046, elevation is based leveling 570001 and 560046.  Single survey and middle thread reading method was adopted for the leveling survey, the sequence of reading is back-front-front-back. The reading is saved to the five places of decimal. Relevant specifications were followed in the progress of survey. d) Tolerance Horizontal : Points position ± 20mm+1ppm Vertical : ± 4

L

mm (where L is the distance leveled in kilometers).

e) Results Submit shall be submitted for engineer acceptance.

9.2 Earthworks 9.2.1 Setti ng-Out for Excavatio n a) Used Instrument Horizontal setting-out should be used RTK-GPS or Total Station. b) Setting-out Method The excavation coordinates for center line, boundary line and key points from the approved shop drawing, are transfer into the GPS data collector or total station. The setting out points shall be show at intervals of not more than 25m along the setting out line. But also every key point must be staked out. c) Tolerance Setting-out points horizontal tolerance ± 50mm. d) Results Submit  A RFI should be submitted for engineer acceptance, RFI including deviation drawing, survey data and soft copy. 9.2.2 Final Survey for Formation Level a) Used Instrument Horizontal checked should be used RTK-GPS or Total Station Vertical checked should be used RTK-GPS, Total Station or Level Insrument. b) Checking Methods EXW-P006-0000-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 10 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

Formation level checked for pipeline: A point surveyed / checked every 10 m along the centerlines. Formation level checked for concrete works Building: Max grid of 10m x 10m,and every key point must be checked. c) Tolerance Horizontal : ± 50mm, Vertical : - 150mm / +10mm. d) Results Submit  A RFI should be submitted for engineer acceptance, RFI including deviation drawing, survey data and soft copy.

9.3 Concr ete Works 9.3.1 Blinding Setting-out for Blinding a) Used Instrument RTK-GPS (RTK-GPS only horizontal and vertical ues level instrument) or Total Station should be adopted for this works. b) Setting-out Method Setting-out coordinates for centerline, boundary lines and key points for blinding, screed, base slab, wall and roof slab from the approved shop drawing (please see appendix). are transfer into the GPS data collector or total station. In each section min. 6 point shall be marked / staked out. But also every key point must be staked out. c) Tolerance Horizontal : ± 20mm, Vertical : ± 10mm. 9.3.2 Base Slab Setting-out for Base Slab a) Used Instrument Total station should be adopted for this works. b) Setting-out Method Setting-out base slab method is the same as the blinding method. c) Tolerance Horizontal : ± 10mm, Vertical : ± 10mm. d) Results Submit  A RFI should be submitted for engineer acceptance, RFI including deviation drawing, EXW-P006-0000-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 11 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

survey data and soft copy. 9.3.3 Wall and Column Setting-out for Wall and Column a) Used Instrument Total station and level instrument should be adopted for this works. b) Setting-out Method Setting-out wall and column method is the same as the blinding method. c) Tolerance Horizontal : ± 10mm, Vertical : ± 10mm. d) Results Submit  A RFI should be submitted for engineer acceptance, RFI including deviation drawing, survey data and soft copy. 9.3.4 Roof Slab Setting-out for Floor and Roof Slab a) Used Instrument Total station and level instrument should be adopted for this works. b) Setting-out Method Setting-out roof slab method same to as blinding method. c) Tolerance Horizontal : ± 10mm, Vertical : ± 10mm. Random check can be done any time by SST. 9.3.5 Inspectio n after for mwo rks comp leted a) Used Instrument Total station and level instrument should be adopted for this works. b) Inspection Method  After formworks completed, survey actual horizontal coordinates and level for boundary lines and key point. Comparison between the “checked Survey Results” and the “design Results”. Where the difference between “checked Survey Results” and “design Results” not exceed the tolerance the formworks is ok, if exceed the tolerance the formworks shall be adjusted. c) Tolerance Horizontal : ± 10mm

Vertical : ± 10mm.

EXW-P006-0000-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 12 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

Random check can be done any time by SST. d) Results Submit Deviation drawings, survey data should be submitted for engineer acceptance 9.3.6 Elevatio n Checking for Roof Slab (fin al surf ace) a) Used Instrument Total station and level instrument should be adopted for this works. b) Checking Method Elevation check for roof slab method same to as elevation check for screed method. c) Tolerance Vertical : ± 10mm. d) Results Submit  A RFI should be submitted for engineer acceptance, RFI including deviation drawing, survey data and soft copy.

9.4 Manho le and Chamber 9.4.1 Blinding Setting-out for Blinding a) Used Instrument RTK-GPS or Total Station should be adopted for this works. b) Setting-out Method Setting-out coordinates for centerline, boundary lines and key points from the approved shop drawing, are transfered into GPS data collector or total station. But also every key point must be staked out. c) Tolerance Horizontal : ± 20mm, Vertical : ± 10mm. 9.4.2 Base Slab 9.4.2.1 Setting-out for manhole and chamber position a) Used Instrument Total Station should be adopted for this works. b) Setting-out Method Setting-out coordinates for manhole and chamber from the approved shop drawing, are EXW-P006-0000-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 13 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

transfered into total station, Site surveyor shall be setting-out manhole and chamber. c) Tolerance Horizontal : ± 20mm. d) Results Submit  A RFI should be submitted for engineer acceptance, RFI including deviation drawing, survey data and soft copy. 9.4.2.2 Elevation Check for Base Slab a) Used Instrument Total station and level instrument should be adopted for this works. b) Checking Method Every manhole and chamber center points and boundary points are checked. c) Tolerance Storm Water Vertical : - 30mm / +10mm Sewer Water Vertical : ± 10mm. d) Results Submit  A RFI should be submitted for engineer acceptance, RFI including checked drawing, survey data and soft copy. 9.4.3 Manhole and Chamber Cover Cover level checked after manhole and chamber completed. a) Used Instrument Total station and level instrument should be adopted for this works. b) Checking Method Every manhole and chamber cover center points shall be checking. c) Tolerance Vertical : ± 10mm. d) Results Submit  A RFI should be submitted for engineer acceptance, RFI including checked drawing, survey data and soft copy.

9.5 Pipeline Works 9.5.1 Setti ng out for pipeline

EXW-P006-0000-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 14 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

a) Used Instrument RTK-GPS and Total station should be adopted for this works. b) Setting out method Setting out method for pipeline work is to set out a point every 10m along the centerlines. and key point must be staked out. c) Tolerance Wastewater pipeline: Horizontal tolerance: Pipe diameter

＜800mm:

± 20mm, ≥800mm: ±

30mm. Storm pipeline: Horizontal tolerance : Pipe diameter

＜800mm:

± 20mm,

≥800mm:

±

30mm. Irrigation pipeline: Horizontal tolerance : ± 100mm. Potable Water pipeline: Horizontal tolerance : ± 100mm. 9.5.2 Wastewater Pipeli ne Sewer pipeline elevation check after installation. a) Used Instrument Total station and level instrument should be adopted for this works. b) Checking Method Pipeline between two manhole or chamber is checked, Distance between point surveyed shall not exceed 10 m along the centerlines. c) Tolerance Pipe diameter

＜800mm,

Horizontal : ± 20mm, Vertical : ± 10mm.

Pipe diameter ≥800mm, Horizontal : ± 30mm, Vertical : ± 10mm. d) Results Submit  A RFI should be submitted for engineer acceptance, RFI including deviation drawing, survey data and soft copy. 9.5.3 Storm Pipeli ne Storm pipeline elevation check after installation. a) Used Instrument Total station and level instrument should be adopted for this works. b) Checking Method Checking method for storm pipelines is the same as checking method Sewer Pipelines. c) Tolerance EXW-P006-0000-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 15 of 35

Sinohydro Group Limited Doha Expressway Package 6

Pipe diameter

＜800mm,

Method Statement for Surveying and Setting Out

Horizontal : ± 20mm, Vertical : ± 10mm.

Pipe diameter ≥800mm, Horizontal : ± 30mm, Vertical : ± 10mm. d) Results Submit  A RFI should be submitted for engineer acceptance, RFI including deviation drawing, survey data and soft copy. 9.5.4 Irrig ation Pipeline Irrigation pipeline elevation check after installation. a) Used Instrument RTK-GPS and Total station should be adopted for this works. b) Checking Method Checking method for irrigation pipelines is to survey a point every 10m-20m along the centerlines. Key point must be checked. c) Tolerance Horizontal : ± 100mm, Vertical : ± 25mm. d) Results Submit  A RFI should be submitted for engineer acceptance, RFI including deviation drawing, survey data and soft copy. 9.5.5 Potable Water Pipeli ne Potable Water pipeline elevation check after installation. a) Used Instrument RTK-GPS and Total station should be adopted for this works. b) Checking Method Checking method for potable water is the same as the checking method for irrigation pipe. c) Tolerance Horizontal : ± 100mm, Vertical : ± 25mm. d) Results Submit  A RFI should be submitted for engineer acceptance, RFI including deviation drawing, survey data and soft copy.

9.6 Road Works 9.6.1 Setti ng out and OGL surv ey of Road works EXW-P006-0000-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 16 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

a) Used Instrument RTK-GPS should be adopted for this works. b) Survey Method Setting-out Method: Coordinates for centerline, boundary lines and key points from the approved shop drawing, are transfered into GPS data collector. Center line and both boundary lines shall be show at intervals of not more than 25m, and every key point must be staked out. OGL Survey Method: Each cross section not more than 25 m and every cross section for 5 point shall be survey. Every cross section survey width exceed road design width. c) Tolerance Setting-Out Horizontal : ± 20mm. d) Results Submit  A RFI should be submitted for engineer acceptance, RFI including deviation drawing, survey data and soft copy.

9.6.2 Survey ins pectio n of compacted gro und a) Used Instrument RTK-GPS should be adopted for this works. b) Inspection Method Each cross section not more than 25 m and every cross section for 4~6 points shall be survey. Every cross section survey width exceed road design width. Details please see appendix.10. c) Tolerance Horizontal : ± 20mm, Vertical : ± 30mm. d) Results Submit  A RFI should be submitted for engineer acceptance, RFI including survey data and deviation. 9.6.3 Survey insp ection for form ation level (fin al layer of sub-grade) a) Used Instrument Leveling Instrument and Total Station should be adopted for this works. b) Inspection Method Each cross section not more than 25 m, every cross section for 4~6 points shall be survey. Construction guy first marking every checked point, the points are fix offset from kerb-stone. Site surveyor used leveling instrument or total station survey every marked EXW-P006-0000-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 17 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

points, and calculation deviation.. c) Tolerance Vertical:-20mm/+15mm d) Results Submit  A RFI should be submitted for engineer acceptance, RFI including survey data and deviation. 9.6.4 Setti ng out of kerb-ston e a) Used Instrument Total Station and Leveling Instrument should be adopted for this works. b) Setting-out Method Setting out method for kerb stone work is to set out a point every interval of 20 meters for straight as well as every 5 meters for curved. And key point must be staked out. c) Tolerance Horizontal : ± 10mm, Vertical : ± 10mm. d) Results Submit  A RFI should be submitted for engineer acceptance, RFI including deviation drawing, survey data and soft copy. 9.6.5 Survey Inspectio n for Kerb-ston e a) Used Instrument Total Station and Leveling Instrument should be adopted for this works. b) Inspection Method Inspection method for kerb stone work is to checked point every interval of 20 meters for straight as well as every 5 meters for curved. And key point must be checked. c) Tolerance Horizontal : ± 10mm, Vertical : ± 5mm. d) Results Submit  A RFI should be submitted for engineer acceptance, RFI including deviation drawing, survey data and soft copy.

EXW-P006-0000-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 18 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

10 Quality Assu rance Procedure 10.1 Management and Respon sibi liti es 10.1.1 Purpose The purpose of this procedure is to carry through a whole course control the whole process of the survey works so that a satisfactory survey result can be achieved in accordance with contract.

10.1.2 Respon sibi lit ies Survey Manager shall fully take charge of survey work of the project, and implement the regulations in quality assurance plan in the survey work and achieve survey result conforming to the requirement of Project Specification. Chief surveyor shall participate in the planning of “survey technical design”, and take charge of on-site survey, calibration of survey instruments and checking of survey results. Site surveyor team shall be responsible for conducting on-site survey works. Office surveyor shall be responsible for the post-processing of data and preparation of drawings.

10.2 Qualit y Assu rance Process The quality assurance process includes survey planning, survey preparation, on-site survey, post-processing data and acceptance checking.

10.2.1 Survey Planni ng  As per contract requirement, survey manager and chief surveyor shall participate in planning works, includes the following: General description and scope of work Technical and quality requirement Determination of program and completion time Work method Survey preparation includes: joint checking of drawings, method, quality control index, instrument maintenance, and personnel training.

10.2.2 On-sit e Surv ey Every procedure of survey works (horizontal control, elevation control) shall be carried out EXW-P006-0000-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 19 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

as per relevant specifications. Effective measures should be taken for the protection of the instrument in storage and delivery. Special attention should be paid to maintain accuracy and sensitivity of the instruments. Survey records should be made in a uniform form and includes all necessary information. For topography survey refer to plan In-survey.

10.2.3 Post-pro cessing Chief survey shall make further arrangements for data and documents review and check relevant site record and calculation data. Drawer shall cooperate with each other and make self-assessment. Survey team leader shall make final checking. Survey superintendent shall be responsible for preparation of “technical report”, checking of relevant survey record and data calculation.

10.2.4 Acceptance Checking Team leader shall make final acceptance checking after self-checking of on-site survey team. Checking content: content of works fulfils specification requirements, survey method should be suitable for the work, result drawing conform to requirement of construction works, survey data and document be complete and correct. The survey result shall be self-checked by surveyor, reviewed by checker, verified by survey superintendent and approved by survey manager finally. Final acceptance and submittal: All survey products together with relevant records shall be submitted to QC department of the project for approval. And survey team shall print out the survey product and submit it to Engineers for approval.

10.3 Resources Management 10.3.1 Personnel Traini ng a) Training programs will be prepared. Such program shall be established taking into account any impact resulting from changes in technology and other survey processes. b) Training shall be provided to ensure that personnel are aware of the importance and relevance of their activities. Records of the training are maintained.

EXW-P006-0000-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 20 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

10.3.2 Instru ment Contro l a) All survey instruments shall be selected and controlled with consideration to range, accuracy and tolerance to accomplish the required results b) Survey instrument shall as a minimum be calibrated as stated on the valid calibration certificate , and record of calibration should be filed. If it is indicated the an instrument is out of calibration, it will immediately be handed over to the responsible chief surveyor so a re-calibration can be carried out. c) All survey instruments shall be calibrated, adjusted and maintained at prescribed intervals or prior to use against internationally or certified nationally recognized standards. Where no such standards the basis and method for calibration shall be documented

10.4 Control of Document Relevant survey document will be controlled as per document control procedures. The document

management

system

will

cover

control

over

approval,

publishing,

communication, change, maintenance of relevant supporting document to assure validity, integrity and applicability of document. Special attention should be paid to laws, specifications and standards concerning survey works. Change and revision of documents: Any change and revision of documents shall be implemented by approval department. And revised documents shall be identified clearly. Document controller will be assigned to manage the relevant survey documents and will be in charge of management, handling, collection, catalog, maintenance of relevant documents.

10.5 Quality Record Relevant quality record shall be prepared and shall be provided to engineer as per their requirement. And a quality controller shall be assigned for the arrangement, catalog, filing and maintenance of quality record. Information of relevant points should be maintained.

EXW-P006-0000-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 21 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

11 Safety and Health Plan for sur vey works 11.1 Risk Ass essment Risk

Potential Danger

Control Measures

Inadequate knowledge of Project requirements Moving vehicles / Machinery

Personal injury Injury to others Ignorant to site regulations Road accident, Personal injury, loss of life, property and equipment damages Personal injury Injury to Others Struck by machinery Hit by moving vehicle Hit by moving truck

 Attend Sinohydro Safety Induction for New Employees

Not familiar with work execution Personnel on ground

 Attend driver training conducted by Sinohydro Safety Department

 Attend the daily program conducted by supervisor / foreman Wear proper high visibility vest Provide shed / covering

Vehicles falling from the edge of the excavation

Back Injury, Fractures, Cuts, Bruises, Death

Rigid safety barriers shall be erected around all excavations to prevent vehicles falling into them. Vehicles shall be kept away from excavations wherever possible. Where vehicles have to tip materials into excavations, stop blocks to prevent them from over-running shall be used and a banksman shall be present before discharging the load.

Fallen material from high

Persons injured

Wear Safety helmet ; Keep away from dangerous place.

Falls from Height

Equipment damaged Back Injury, Fractures, Cuts, Bruises, Death

Reference

Suitable signs will be positioned and rigid edge protection will be erected at places where the falls of more than 2m could occur. Personal suspension equipment will be used by operatives working at or near the edge. Training, toolbox talks and instructions shall be provided to all operatives and supervisory staff involved in the use of suspension equipment such as lines and harnesses, and how to inspect and assess PPE of this type before use.

11.2 Protectiv e & Safety Equip ment  All workers involved shall be equipped with adequate PPE as follows: Safety helmet Safety boots

EXW-P006-0000-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 22 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

Safety vest

11.3 Contr actual Requi rements Safety induction for New Employees PPE requirements Inspection of Machinery Emergency Procedures Welfare facilities First aid requirements Defensive driving training Water tank for drinking Communications (walktalking, mobile telephone)

11.4 Emergency Procedures In the event of an accident, the following shall be activated: The area supervisors shall act as the Rescue Team Leader and attend to the accident He shall inform the emergency controller of the accident In the absence of the Project Manager, the Construction Manager shall act as the Emergency Controller The emergency controller shall alert the emergency response team, comprising of first aiders to attend the accident when required. The emergency controller shall alert the fire fighting team should there be a fire. The rescue team leader shall alert the emergency controller for additional assistance from other rescue team leaders The emergency controller shall arrange for transportation to send the injured person to the clinic or hospital if required The accident area shall be barricaded and nothing shall be removed from the area.  A watchman shall be engaged to protect the area from unauthorized entry The emergency controller shall call for a post mortem meeting after the emergency with the people involved in the emergency. The S&H representative shall organize the safety committee to perform a full accident investigation  All information leading to the accident including information, description, photos, time, location, sources, witness statements, police and medical reports shall be prepared a EXW-P006-0000-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 23 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

submitted by the Project Manager. Defensive driver permit

12 Inspectio n & testing Inspections and testing will be performed by Sinohydro; the procedure should be subjected to Document EXW-P006-0000-GS-SHC-IT-00001.

13 Appendix  Appendix.1 List of Survey Equipment (Used on P6 Site)  Appendix 2.Inspection for formation level /base slab/roof slab/backfilling surface of sheet  Appendix 3.Inspection for formation level /base slab/roof slab/backfilling surface drawing  Appendix 4.Setting out for excavation sheet  Appendix 5. Manhole/chamber inspection for base slab level sheet  Appendix 6 . Inspection for level of the installed pipeline sheet  Appendix 7.Formwork checking for kerb blinding  Appendix 8. Survey data for compacted ground/sub-grade/sub-base  Appendix 9. Inspection for kerb stone sheet  Appendix 10．Inspection deviation drawing for kerb stone

EXW-P006-0000-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 24 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

 Ap pendi x.1 L is t of Sur vey Equ ipm ent (Used on P6 Sit e)

Item

Manufacturer

Manufactures Serial No

FOIF

T97212

R6

Trimble

4822153875

R6

Trimble

4822153857

DTM532

Nikon

032753

DINI12

Trimble

703163A

TBC

2.4

Trimble

TGO

1.63

Trimble

 AutoCAD

2006/2010

Autodesk

Type

Model

 Automatic

FOIF

Level

NAL-124

GPS Receiver Survey

GPS

Instrument

Receiver Total Station Electronic Level

Survey

Calibration Date 19-Mar-20 12 24-Dec-20 11 24-Dec-20 11 13-Mar-20 12 20-Feb-20 12

ExpireDate

Remarks

18-Sept-2012

23-Dec-2012

23-Dec-2012

12-Sept-2012

19-Aug-2012

Software LGO Nikon

Data

Transfer Computer

LEICA Nikon

unit 1

EXW-P006-0000-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 25 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

 Ap pendi x 2.In sp ect io n f or fo rm ati on level /bas e sl ab/r oo f sl ab/back fi ll in g s ur fac e of sheet Location.____ Inspection f or fo rmation l evel/screed/base slab/roof slab/backfi lling surf ace CHAINAGE

P.N

ELEVATION CHECKED POINTS EAST NORTH

  ELEVATION

DESIGN ELEVATION

DEVIATION

SURVEY INSTRUMENT: GPS / TOTAL STATION / LEVELING DESCRIPTI

P.N

EAST

NORTH

ELEVATION

STATION BS CHECK .BS

Surveyor:_________ 

EXW-P006-0000-GS-SHC-MT-00003 Rev.1

Date:_________

12 May 2012

Page 26 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

 Ap pendi x 3.Ins pec ti on fo r for mat io n lev el /bas e sl ab/r oo f sl ab/b ack fi ll in g su rf ace drawing

N

        3         0   .         0         0         8         4

3850.00

3300.00

3850.00

        0         0   .         0         0         4         1

        7         9   .         9         9         7         4

Surveyor:_________ 

EXW-P006-0000-GS-SHC-MT-00003 Rev.1

Date:_________

12 May 2012

Page 27 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

 Ap pen di x 4.Set ti ng ou t fo r exc avat io n s heet

Location .______ Setti ng out for excavation CHAINAGE

SETTING OUT POINTS P.N

EAST

NORTH

ELEVATION

NORTH

ELEVATION

SURVEY INSTRUMENT: GPS / TOTAL STATION / LEVELING DESCRIPTION

P.N

EAST

STATION BS

CHECK .BS

Surveyor:_________  EXW-P006-0000-GS-SHC-MT-00003 Rev.1

Date:_________  12 May 2012

Page 28 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

 Ap pen di x 5. Man ho le/c hamber ins pecti on fo r b ase slab l evel sh eet MANHOLE/CHAMBER NO. INSPECTION FOR BASE SLAB LEVEL (STORM / SEWER / IRRIGATION / POTABLE)

Manhole/CHAMBER

P/N

CHECK POINTS COORDINATE EAST

NORTH

ELEVATION

DESIGN COORDINATE  

EAST

NORTH   ELEVATION

DEVIATION(mm) EAST

NORTH

ELEVATION

SURVEY INSTRUMENT GPS/TOTAL STATION/LEVELING N.O.

EAST

NORTH

ELEVATION

STATION BS CHECK POINTS REFERENCE DRAWING:

Surveyor:_________  EXW-P006-0000-GS-SHC-MT-00003 Rev.1

Date:_________  12 May 2012

Page 29 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

 Ap pendi x 6 . Ins pec ti on fo r level of th e ins tal led pi pel in e sh eet CH.______ INSPECTION FOR LEVEL OF THE INSTALLED PIPELINE(STORM/SEWER/IRRIGATION/POTABLE)

CHAINAGE

CHECK POINT COORDINATE

DESIGN

DEVIATION(mm)

ELEVATION

ELEVATION

P/N

EAST

NORTH

ELEVATION

 

SURVEY INSTRUMENT:GPS / TOTAL STATION / LEVELING N.O.

EAST

NORTH

ELEVATION

STATION B.S.

CHECK POINTS REFERENCE DRAWING :

Surveyor:_________  EXW-P006-0000-GS-SHC-MT-00003 Rev.1

Date:_________  12 May 2012

Page 30 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

 Ap pendi x 7.f or mw or k c henck ing fo r ker b b lin di ng FORMWORK CHECKING CHAINAGE

Surveyor:

KERB LEVEL

OFFSET FROM KERB LINE L

R

FOR KERB BL INDING (

CH. __________)

CHECKED COORDINATES POINT NO.

E

N

ELEVATION

DESIGN LEVEL

DEVIATION LEVEL(MM)

Date:

EXW-P006-0000-GS-SHC-MT-00003 Rev.1

12 May 2012

Sinohydro Group Limited Doha Expressway Package 6

Page 31 of 35

Method Statement for Surveying and Setting Out

 Ap pendi x 8. Sur vey dat a for comp act ed g ro un d/s ub -gr ade/sub -base. CHAINAGE NO. 1 2 3 4 5 6 7 8 9 10 11 12 13

SURVEY COORDINATE  AND LEVEL EAST NORTH LEVEL

FINISHED ROAD LEVEL

SUB-GRADE LEVEL(TOP)

DIVATION LEVEL(mm)

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

 Ap pendi x 8. Sur vey dat a for comp act ed g ro un d/s ub -gr ade/sub -base. CHAINAGE NO.

SURVEY COORDINATE  AND LEVEL EAST NORTH LEVEL

FINISHED ROAD LEVEL

SUB-GRADE LEVEL(TOP)

DIVATION LEVEL(mm)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 SURVEYOR:

EXW-P006-0000-GS-SHC-MT-00003 Rev.1

DATE:

12 May 2012

Page 32 of 35

Sinohydro Group Limited Doha Expressway Package 6

Method Statement for Surveying and Setting Out

 Ap pen di x 9.In sp ect io n f or ker b s ton e sh eet NO.

CHECK POINT COORDINATE EAST

NORTH

ELEVATION

DESIGN ELEVATION

NO. FREE

EAST

WEST

ELEVATION

DEVIATION ELEVATION(mm)

1 2 3 4

STATION BS CHECK BS

LEVELING BS SURVEY INSTRUMENT:TOTAL STATION AND AUTO-LEVEL SURVEYOR:

DATE:

EXW-P006-0000-GS-SHC-MT-00003 Rev.1

12 May 2012

Page 33 of 35

Sinohydro Group Limited Doha Expressway Package 6

 Ap pen di x 10

Method Statement for Surveying and Setting Out

inspection deviation drawing f or kerb stone.

Surveyor:__________ 

EXW-P006-0000-GS-SHC-MT-00003 Rev.1

Date:____________ 

12 May 2012

Page 34 of 35