Method Statement for Screeding Works

METHOD STATEMENT FOR SCREEDING WORKS TABLE OF CONTENTS 1

PURPOSE

2

SCOPE OF WORKS

3

REFERENCES

3.1

Contract Document

3.2

Contracture Submittals (List)

4

DEFINITION / ABBREVIATIONS (if any )

5

RESPONSIBILITIES

5.1

Project Manager

5.2

Construction Manager

5.3

QA/QC Engineer / Inspector

5.4

Site Engineer

5.5

HSC Officer

5.6

Forman / Work Supervisor

6

EQUIPMENT / TOOLS

6.1

Equipment

6.2

Tools

6.3

Safety Control measures

6.4

List of Material

6.5

List of manpower

7

PROCEDURE

8

ATTACHMENTS

8.1

ITP

8.2

ICL

8.3

Risk Assessment

8.4

HSE Policy

8.5

QA/QC (Quality Assurance / Quality Control )

8.6

Material Approval

1. PURPOSE The purpose of this Work Method Statement for Mortar Screed Works of Building is to outline and describe in detail the procedure such as design mix, mixing, pouring and curing. Inform all concerned supervisor including workers the value and importance of this activity prior to implementation. This activity should be performed with strict compliance and implementation of Safety Requirements & Procedure and project specifications to complete the work for concrete screed. 2. SCOPE OF WORKS The scope of this Method Statement covers the works in this Project (Building and Substation) including buildings in existing plant as follows: – Mortar screed for floor slab 3

REFERENCES

3.1 Contract Document 3.2 Contracture Submittals (List) 4

DEFINITION / ABBREVIATIONS (if any )

5

RESPONSIBILITIES

5.1 Project Manager 5.2 Construction Manager 5.3 QA/QC Engineer / Inspector 5.4 Site Engineer 5.5 HSC Officer 5.6 Forman / Work Supervisor 6

EQUIPMENT / TOOLS

6.1 Equipment 6.2 Tools 6.3 Safety Control measures 6.4 List of Material 6.5 List of manpower 7. PROCEDURE 7.1 Preliminary preparation – Make sure old concrete has to be in sound surfaced except for roof slab where in the surface has to be smoothed and cleaned prior to install vapor barrier. – Put markings for survey lay-out and slope to final and correct elevation. – Install all embedded items prior to mortar screed.

7.2 Mix Proportion

– Refer to BS 8000: Part 9: Code of practice for cement/sand floor screeds and concrete floor toppings 1989, Table 2. Guidance on changes in mix proportion of cement /sand screeds when damp sand is used. Using mix ratio, cement : sand as 1:3 Then proportion by mass using cement : 50kgs and dry sand : 150kgs. 7.3 Mixing of materials –

Mixing for cement/sand screeds will be manual and placed manually. 7.4 Placing and compacting

–

Mortar screed will be placed manually.

–

Damp the surface with water prior to start placing of mortar screed.

–

Check that the base has been suitably prepared to receive the screed.

–

Use narrow strips of screed materials, laid and compacted to the finished level to establish the level of the

screed. –

Place screed materials in bays separated by leveling strips. At the surface allow a surcharge of

approximately 10mm above the leveling strips to allow for compaction to level. –

Tubular pipe has to be used as a leveling guide/strip and supported independently.

–

Fill any low areas, re-compact and rule out.

7.5 Finishing –

Finish the surface as required by the approved drawing or as needed for the type of flooring to be supplied.

–

Finish to a flat surface with a hand steel trowel. 7.6 Curing and protection

–

Proper curing should be done for the area.

–

Protect screeds against damage, wear and contamination during subsequent building operations.

7.7 Clearing 8

ATTACHMENTS

8.1

ITP

8.2

ICL

8.3

Risk Assessment

8.4

HSE Policy

8.5

QA/QC (Quality Assurance / Quality Control )

8.6

Material Approval