Document No. MST/021
Revision No. 0
Date: 18-Jan-2021
Grand Stay Hotel- Floor No 43- Main Kitchen Renovation works
CLIENT
:
Grand Stay Hotel
PROJECT MANAGERS
:
Riwaq Projects Management
MAIN CONTRACTOR
:
Helium MEP
METHOD STATEMENT
FOR
SCREED WORKS
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Document No. MST/021
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Date: 18-Jan-2021
TABLE OF CONTENTS
1.
SCOPE OF WORK, METHODOLOGY
2.
PROJECT ORGANIZATION FOR HEALTH AND SAFETY CONTROL
3.
HEALTH AND SAFETY RISKS AND CONTROL
4.
ACCESS AND EGRESS
5.
LIGHTING
6.
PLANT & EQUIPMENT
7.
PERSONNEL TRAINING CERTIFICATION
8.
HAZARDOUS MATERIAL / SUBSTANCE
9.
WASTE MANAGEMENT
10.
SPECIAL CONTROL MEASURES
11.
APPENDIXES;
A - CHECK LIST
B - INSPECTION TEST PLAN
C - RISK ASSESSMENT
D- TDS
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Document No. MST/021
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PREFACE
The purpose of this method statement is to establish, monitor and control all activities during
Screed Works in accordance to the requirements prescribed in the drawings and project
specifications.
RIWAQ PROJECTS MANAGEMENT present this method statement for review and to notify those
who involved in the construction to attain the consistency of work towards the common
objectives.
This Method statement is a controlled document and only the current revision number is valid
and authorised.
All necessary parties involved in the execution of this method will be competent and
authorised for their respective roles and will be fully conversant with the contents of this
document.
Signed:
Date: 18-Jan-2021
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Document No. MST/021
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1. SCOPE OF WORK, METHODOLOGY
1.1
SCOPE & OBJECTIVE
This document details the methods and quality controls to be implemented in carrying out
Screed Works within the scope of RIWAQ PROJECTS MANAGEMENT at ACT1|ACT2 Project.
The method statement covers all activities related to the application of bonded screed.
1.2
DEFINITIONS AND ABBREVIATIONS
DEFINITIONS
Client
Grand Stay Hotel
Project
Floor no 43 -Main kitchen renovation
Project Manager
Riwaq Projects Management
Main Contractor
Heluim MEP
MUST
Signifies a legal or statutory requirement
MAY
Signifies a feature which is discretionary
SHALL
Signifies a requirement made mandatory by this
Method Statement
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Document No. MST/021
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ABBREVIATIONS
QA - QUALITY ASSURANCE is the planning and organizing of a system or
program to maintain a required level of quality or reliability. This includes
auditing the system’s operation and related controls to assure that they are
being executed properly and functioning as expected. Quality shall be assured by
Contractor/Client.
QC – QUALITY CONTROL is a part of Quality Assurance, implements the
latter by examining physical characteristics and comparing them to established and
acceptable Quality Documents as stated in the quality assurance program or
plan
Quality shall be controlled by Sub-Contractor in accordance with the Quality
Documents.
ITP INSPECTION & TEST PLAN means the document which contains
sequence of activities in a process, highlights the applicable Quality Documents,
and inspection criticalities.
PAR - PREVENTIVE ACTION REQUEST means to eliminate the causes of a
potential nonconformity or other potentially undesirable situation
CAR - CORRECTIVE ACTION means to eliminate the causes of a detected nonconformity or other undesirable situation.
QUALITY DOCUMENTS means drawings specification, procedure, record
formats, codes and standards specified in the documents issued by the
Contractor/Company to the Subcontractor.
SITE means the place, designated by Client for further development, where
the construction activities shall be carried out by Sub-contractor.
PROCEDURE describes how a process is performed.
TPI - Third Party Inspection
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1.3
CODES, STANDARDS & REFERENCES
TYPE
SPECIFICATIONS/CODES
DOC REFERENCE
Project Specification – General Specifications section
Hand and Power Operated Tools - DM COCSP Chapter 21
Concrete and masonry - DM COCSP Chapter 10
HSE REQUIREMENT
PPE - DM COCSP Chapter 4
All application Local Laws Regulations
Technical Guidelines.
1.4
PLANT & EQUIPMENT REQUIREMENTS
1.
2.
3.
4.
5.
6.
7.
8.
9.
Power Float – Petrol & Electrical
Trowels
Dabbling Bar
Straight Edges
Shovels
Small Hand tools
Hand held grinders
Concrete grinder/polisher
Reducer
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1.5
MATERIALS
S. No.
Material Details
1
Dry Mix Concrete – Screed
2
Bonding Agent
3
Edge Strip
4
Cement
5
Dust Proof Coating Material wherever applicable (Mapetop N AR6)
6
Crack Repair Material (Mapei: Eporip)
1.6
SEQUENCE OF WORKS
1. Prior to screeding
2. Bonded screed
3. Application
4.
1.7
Post screed
DETAILED PROCEDURE
Surface Preparation:
The works shall be executed in accordance with the following methodology and sequence
after ensuring that all the MEP services are laid and MEP clearance has obtained.
Reference:


ASTM C 150, Type I
Project specification 03530
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Prior to Screeding works at Site
Ensure that all materials and documentation have been approved in writing prior to
commencement of any works. Pump locations and movement of truck mixers must be
agreed with the main contractor logistic team on daily basis. For the floors from ground
level to a maximum of 18 floors it may be possible to use our mobile concrete pump this
will be dependent on how close we can get to the building and the number of podiums
that are in place. Static vertical concrete lines will be placed by Cherry Tree Technical
Services LLC after consultation about the location with the main contractor and Separate
Logistic layout showing the routing shall be submitted for your approval in due course
considering static line each floor that screed is required a 90-degree bend will be fitted to
the pipe enabling us to tap into the line for each pour. Whether it is the mobile pump or
the static line a reducer is connect to the pipe to allow us to connect our 63mm diameter,
20 metre length rubber hoses. The maximum amount of hoses to be used at one time
should be 10. When using the static line, it should not be necessary to use more than 5
hoses at one time. The use of the flexible pipe will enable us to move in and out of rooms
very quickly. Once screed has been completed all of the flexible hose will be removed and
the static line recapped.
Application of Bonding Agent at Dry Areas
For Bonded screed ensure that the area (slab) is clean and free of dust. The floor areas to
be screeded should have a texture to achieve sufficient bonding to the screed and within
screed thickness/tolerance. The floor will be inspected by CTTS and ensure the
requirement of scabbling to achieve sufficient key for the bonding of screed & submit
inspection to consultant for approval along with a copy of MEP clearance.
Upon obtaining approval from Consultant on the surface preparation bonding agent shall
be applied by Mixing 3 parts water, 1 part bonding agent and 1part cement together and
apply by using a broom to spread the mix to the entire areas that will be screeded. This
process is repeated at every area before screed applied. It is very important to ensure
that the bonding material does not dry out prior to the screed being poured and that
screed should always be wet on wet with the bonding material.
Laying of Screeding Works
The Datum line shall be strictly followed as provided by Main Contractor and the drop for
the final finishes given in writing. A laser level will then be used to transfer the levels
around the area that are to be screeded. The screed will arrive by truck mixer form one of
the approved read-mix suppliers, the delivery ticket will be checked against the approved
mixed design to ensure that the correct grade, flowability & materials have been
supplied. The screed will be continuously applied to the designated areas and
continuously checked with the laser to ensure the correct levels are being maintained.
The skilled masons will then use aluminium straight edges or dabbling bars of different
sizes depending on area and space available to tamp the screed and give a suitable finish
ready for power floating.(Polythene sheet shall be laid over the waterproofing in the wet
area as per the approved shop drawings).
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Finishing/Power floating of Screed Works






Float and trowel to finish the screed including all edges, using a power float.
All screeds that are to receive ceramics, terrazzo and marble will be finished using
a power float with a pan attached to give an orange peel effect.
Screed that will receive carpet, vinyl and epoxy will be finished with power float
blades leaving a smooth finish.
Screed that will receive a Dust proof Coating Mapetop N AR6 shall be sprinkled at a
rate of min.1.5kg/sqm before the Concrete starts to set, once Dust proof coating is
observed the Moisture from the Screed then Power floating shall be carried out
leaving a smooth finish.
Once the power floating has been completed Polythene sheets will be laid across
the screed to ensure correct curing or a curing agent will be applied. The screeded
area will be open to foot traffic approximately 8 hours after power floating is
completed.
The screed should be cured for 2 days and no equipment or materials should be
placed on the screed for at least 48 hours. 7 Days & 28 day Cubes to be made for
each pour over 400m2/ as directed by the Consultant, these will be tested by a
third party and all results issued to consultant for approval.
Post Screeding and treatment of Construction/Movement Joint
Within 48 hours saw cut joints will be made into the screed using a concrete road saw
and/or hand- held grinders. The area will be cut into a maximum of 25m2 however this
will be reduced where columns and other abutments i.e. doorways are situated as these
are potential crack areas. The depth of the saw cut should be equal to one of the screed
thickness but should never be less than 13mm. Cherry Tree Technical Services LLC will
liaise with the main contractor on saw cuts so that any joints that are specifically required
for the final finishing can be reflected through the screed. An inspection will be raised for
Completion of Screeding works along with As-built level for Consultant approval.
The screed finish will have a tolerance of 3mm over a 3m straight edge to check for any
surface deviations, as per the project specification.
Note: All procedures are in line with British Standards 8204-1
Rectification of Cracks on Screed:

Major cracks can be treated with Crack filler material (MAPEI - EPORIP).
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1.8
ENVIRONMENTAL, SAFETY AND HEALTH
1.8.1 Activity Risk Assessment
A risk assessment analysing potential risks and their mitigation measures is attached to this
method statement in Appendix B.
1.8.2 HSE General Precautions & General Mitigation Measures/Controls

Activity to be adequately supervised by competent staff (both Construction & HSE).

All Personnel/Workforce involved in the activity to be inducted, and received the required
training/competencies BEFORE commencing the activity.

Engineer/Supervisor/Foremen In-Charge to conduct Daily Activity Briefing form, and
discuss it with the workforce BEFORE commencing the activity (form and discussion to be
in the language understood by the workforce)

Required Permits/NOCs (including Permits to Work, as applicable) to be obtained ahead of
time (BEFORE commencing the activity) (if any)

All Plants/Machines/Vehicles/Equipment used in the activity to be pre-inspected and
approved by the competent authorized personnel

HSE
Procedures
relevant/applicable
to
the
activity
to
be
reviewed
by
the
Engineer/Supervisor In-Charge, and specific precautions to be conveyed to the
Foreman/Charge-Hand and Workforce through MS/RA briefing and other forms of
communications.

All Personnel/Workforce involved in the activity to fully comply with 5 point PPE
requirement (Personal Protective Equipment)

Use adequate and visible HSE signage, posters and board to promote awareness.

Ensure adequate rest areas (welfare facilities) are accessible.

Engineer/Supervisor/Foreman/Charge-Hand to be familiarized with Emergency Response
Plan & Contact Numbers. Emergency contact numbers to be posted on site.

Supply toilets and cool drinking water at the immediate area of the activities prior to
commencement of works.

The notifications of adverse weather conditions like high wind speed and TWL levels will
be given to site construction.
1.9
ORGANISATIONAL RESPONSIBILITIES
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1.9.1 Construction Manager








Implement and maintain a successful completion of the work.
Communicate this Method Statement to his subordinates.
Provide his subordinates with the information they need to carry out their responsibilities.
Enforce the application of this document once it is approved.
Stop all unsafe work activities.
Ensure the Health and Safety of the personnel on the site.
Ensure that the requirements of the Project Specifications and relevant ITP is followed and
implemented during construction
Ensure requirements of tower crane installation is followed and implemented during
construction.
1.9.2 HSE Manager







Ensure Safe work procedures implemented and followed for each activity.
Monitor in the implementation of this method statement.
Provide required training.
Regularly pay site visits to ensure that safety is being exercised at site as per requirement.
Advise the Construction Manager for any intervention for safety procedures.
Verify field activities are following the MS/RA and any new risks not previously identified are
addressed and reflected in a revised/new MS/RA.
Stop all unsafe work activities.
1.9.3 QC Manager
 Supervise of Quality Control activities involving all materials; undertake the more complex
inspection and resolve technical and client issues on Quality Engineering.
 Assign QC Engineers and their monitoring all Site Inspection activities.
 Interpret codes, standards and project specifications to ensure contract requirements are met.
 Liaise with internal and external concerned parties to co-ordinate presence at inspections.
 Shall conduct inspections as per the Method Statement & ensure that all procedures in the
Method Statement are implemented.
 Review and make recommendations for the continuing development and improvement of
Inspection Test Plans and Quality Control Procedures / Method Statements specifically in relation
to workmanship activities.
 Supervise of Quality Control activities involving all materials of tower.
1.9.4 Site Engineer









Assist the section engineer in carrying out his responsibilities.
Coordinate the work with the General Foreman.
Directly monitor the construction activities at site.
Implement the relevant ITP
Ensure that the quality of the works meets the requirements of the Project Specifications, ITPs
and QCPs
Ensure that working areas are properly covered with work permits.
Report on the spot of any non-conformance to the section engineer.
Provide all necessary tools, equipment, and material required at site.
Ensure that safety awareness at site is continuously maintained through JSTI and tool boxes talks.
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 Make sure that site personnel are adequately trained to do the job.
 Stop all unsafe work activities.
1.9.5 QC Engineer
Maintain all quality records properly documented.
Conduct inspections and monitor the required tests.
Determining and reporting any non-conformance to M/S MACE / ARCH GROUP Manager.
Ensuring that all personnel are fully aware with all the quality requirements and applications for
all quality documents as relevant to their discipline.
 Ensuring appropriate supervision for all work activities enabling quality related operations to be
effectively covered.
 Coordinate with the Independent Laboratory representative so that all tests are carried out as
required by the specifications and records as per the Contractors Quality Control Plan.




1.9.6 Safety Officer
Ensure that toolbox talks & DAB are conducted as per plan.
Assist in the implementation of this Method Statement.
Provide the required training for the site personnel involved.
Monitor and advice to site supervisors all requirement for tools to maintain a safe working
environment.
 Monitor the compliance with procedures with respect to equipment’s and related certification
and permits.
 Stop all unsafe work activities.




1.9.7 Surveyor







Execution of daily survey field tasks according to the procedures of the Survey Dept.
Setting out and as-built of tasks provided by Senior Survey Engineer.
Keeping the survey instruments and accessories in a good condition.
Preparation of survey sketches and handing over of data.
Handing over of set-out points or lines to responsible site engineer.
Maintaining the Survey Monuments and Geodetic Network points.
Control of subcontractor Surveyors daily work and data.
1.9.8 Subcontractor
 Ensure to follow Project Quality Plan and specifications strictly
 Execution of works as per approved drawings and specification
 Ensure to follow Project Safety plan
1.9.9 Permit to Works (PTW) Person




Implement the requirements of the work where permit to work is required.
Undertake restricted work (and general work) safely and in accordance with the PTW.
Make sure equipment and area is safe before, during and on completion of the task.
Seek immediate advice if circumstances or conditions change while undertaking work.
Ensure that all tags and signs are prominently displayed so that others are aware.
2. PROJECT ORGANIZATION FOR HEALTH AND SAFETY CONTROL
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Project Manager-HSE ManagerConstruction ManagerSite ManagerSite Engineer
(Cherry Tree) Safety Officer
3. HEALTH AND SAFETY RISKS AND CONTROL
All risk associated with the activity identified through sufficient and suitable risk
assessment with control measures (Refer Risk Assessment)
4. ACCESS AND EGRESS
Project Team will ensure that safe access and egress are provided at the work
locations. Arrangements highlighted as per attached drawing.
5. LIGHTING
Adequate lighting arrangements will be made available; Lux Level must be minimum
50.
6. EQUIPMENTS
Equipment’s should be thoroughly inspected, tagged and colour coded. Manufactures
certificates to be documented along with Third party certificates. Daily pre task
inspections required and weekly check list to be recorded.
7. HAZARDOUS MATERIAL / SUBSTANCE
Concrete
8. WASTE MANAGEMENT
All concrete waste to be collected and disposed separately and do not mix with open
soil.
9. SPECIAL CONTROL MEASURES

Task specific PPEs should be worn by all masons involved in the task. Polythene
sheets to be stored on designated area with adequate firefighting devices.

Emergency procedures will be clearly briefed to all involved parties.
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APPENDIX –A
CHECK LIST
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APPENDIX –B
INSPECTION TEST PLAN (ITP)
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APPENDIX –C
RISK ASSESSMENT
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APPENDIX –D
TDS
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