method statement for gypsum board suspended ceiling system

TOP BUILDERS INTERNATIONAL CO. LTD. 得寶國際有限公司

Method Statement For

Gypsum Board Suspended Ceiling System

Project: Venetian Macau in Cotal, Macau Re: Work Package 5115 (Top Builders), Prefabricated Bathroom Revision: B Date: 2006/06/16

Method Statement for Gypsum Board Suspended Ceiling System

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Table of Content

Content ………….. 2 Introduction ………….. 3 Relevant submission ………….. 3 Installation of suspended ceiling system ………….. 3 - 4

Preparation work ………….. 3

Concerns ………….. 3 Ceiling Installation ………….. 4 Cornice Installation …………... 4 - 5

Appendix ………….. i - ii


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Scope of work Trade contractor of this project will be responsible for the execution of the work in accordance with the specifications and relevant approved documentations. The scope of work includes supply and installation of proposed gypsum board suspended ceiling system including proprietary KIRII SD-19 (Standard) System with W-Bar, C-38 Channel, Hanger, W-Clip, Z-Bracket and Bolt and moisture resistant board (MR - GypBoardTM) at the L33 to L37 tower suite bathroom areas. Relevant submission

• Material Submission of the KIRII SD-19 (Standard) System including samples and catalogue.

• Material Submission of the GypBoardTM including samples and catalogue.

Installation of suspended ceiling system • Preparation work

1. Site Cleaning 2. Site surveying and setting out 3. Erect working platform if necessary and according site safety

regulations.

• Concerns

1. Checking Ceiling Level Before installation work starts, check and ensure at least 4-in. minimum clearance for installing ceiling panels.

2. Working at Height Working platform will be provided if higher than 2m and erected by experience competent worker and inspected by the appointed professional person signing and certifying Form 4 & 5 before use and re-inspection within 14 days.

3. Obstruction When hanging the main tees, if the hanger wire holes are not accessible, due to duct work, lighting, or other site works, using the convenience holes for the hanger wire.

Ceiling Installation

1. Mark the ceiling height on the surrounding walls according to the reference line given by the Main Contractor.


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2. Mark carrying channel (C-38 channel) by stretch a string across the room at ceiling height.

3. Installation of the 8mm diameter threaded suspension, fixed by using

Z-Bracket to the ceiling slab. Spacing of suspension both must be at 1200m max. in either direction and at perimeter of ceiling as required.

4. The C-38 channel must be placed at 1200mm Max. shall be hung to

the lower part of the suspension bolts by means of galvanized steel hangers and nuts.

5. The W-Bar at a spacing of 400mm Max. shall be fixed to the C-38

channel with W-Clips at each intersection. W-Clips must as a rule alternate with the sides of the carrying channel.

6. Rigid and aligned system for the fixing of ceiling board must be

provided with separated pieces of C-38 channel and W-Bar to be jointed by channel joint and double joint respectively.

7. Extra hangers to be provided where opening are required for light

fittings and access panels.

8. All components must be well fixed and the suspension system must be correctly aligned and accurately leveled before attaching the ceiling board.

9. The gypsum board shall be fixed by screws at 300m Max. to the

W-Bar with long edges of the gypsum board placed parallel to the W-Bar.

10. Finish of all joints and screw heads with joint tape and joint compound

must be in accordance with manufacturer's instruction which shall be approved by the Architect’s consultant.

11. Primer and Painting works can be proceeded after completion of

gypsum board installation.

12. Details of Step 10 and 11, please refer to the Method Statement for Painting.

Cornice Installation

1. Before commence the installation, ensure the wall and ceiling surface is sound and free from any material i.e. wallpaper, loose or flaking paint or plaster within the operation area.

2. For the large cornice, screwing fixing is necessary.


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3. Measure the cornice length required and mark wall edge of moulding before screw fixing. Leave enough moulding length beyond the wall edge mark to allow for external mitre cuts.

4. As cutting the mitre in the corner angle, the mitres must be marked out

and cut for each individual corner.

5. After cutting the cornice to be proper size, screw casting to wall and ceiling.

6. Fill, joints and screw holes first Herculite Fibrefix. Once the Fibrefix

has set finish off the joints and screw holes with plaster, allow to dry and sand smooth.

Review No. B Date: 16-06-02006 HAZARD IDENTICATION SHEET Page 1 of 3

Project: Venetia Cotai, Macau – Prefabricated Bathroom Work Package Code: WP 5115 (Top Builders) Subject: Gypsum board Suspended Ceiling System Analysis by: Edward Leung Location: Hotel Tower

Item Job Task Hazard People Affected Cause of Hazard

Worst Harm Due to Hazard

Existing Control Measures Remark

1 General works Personal injury worker and affected people nearby

- Lack of site safety knowledge

- Inappropriate use of PPE

Severely injured

- Worker should attend Safety Induction Training provided by GAMMON.

- Provided appropriate PPE as job required.

- Keep minimum stock of PPE to be maintained for issuing.

2 Drilling eye injury Noise nuisance Body Injury

worker and affected people nearby

- Defective electric tools being used.

- Worker did not wear and use PPE

- No Warning sign

Fatality - No patent defect on the electric tools to be used.

- Appropriate electric tools shall be selected.

- Monthly inspection of the tools by registered electrician.

- Fence off the working areas to prevent unauthorized entry.

- Ensure the workers Wear long sleeve Protective cloths & safety boot

- Safety gloves & eye protector.

3 Manual handling and transporting of material

Twisted , slipping, tripping, hit by objects Muscle strain During manual handling

workers - Using improper lifting method to handle goods

- poor housekeeping

- Worker did not wear and use PPE

Severely injured

- Provide pre-work body exercise to minimize the risk of injury

- Wear long sleeve safety shoes to protect the ankle and foot.

- Use the mechanical equipment if possible.

- Always keep the workplace dry and tidy.





4 Materials

storage

Fire worker and affected people nearby

- Poor Housekeeping

- Smoking at the workplace and storage yards.

- Insufficient Ventilation

Fatality

- Flammable materials and goods must be kept away from the workplace.

- Provide fire extinguishers at the workplace and storage yards.

- Clean all the rubbish, paper, scraps all the time.

- Display “no smoking’ signage and no smoking is allowed at the workplace.

- Adequate ventilation

5 Ceiling Installation

Collapse of working platform worker and

affected people nearby

- Platform erected by non-experience competent workers.

Serious injury - Appointed Registered professional inspect and sign for the workability of working platform of height above 1.8m.

6 Ceiling installation

Fall of person at height worker - Inadequate platform

being used by workers.

- Workers did not wear and use PPE.

Fatality - 200mm high toe-board and fence at 450mm and 900mm to be installed.

- Prohibit to move the working platform if any worker on it.





7 Ceiling installation

Falling objects from the working platform

Worker and affected people nearby

- Worker working under the working platform.

- No Warning sign

Severely injured

- Working platform should be closely

planked with 200mm toe-board

equipped.

- No other works shall be carried out

under the activities that are working

above.

- Chain block shall be used to the

materials that are heavy in weight and

large in size.

- Fence off the working area with barrier and notice / warning sign should be provided.

Review No. B Date: 16-06-2006 RISK ASSESSMENT SHEET Page 1 of 3

Note: Probability or Likelihood Rating: Almost Certain ( 5 ) Probable ( 4 ) Possible ( 3 ) Remote (2 ) Impossible (1)

Consequence Rating: Very High ( 5 ) High ( 4 ) Medium ( 3 ) Low ( 2 ) Very Low ( 1)

Risk Level: ( RED ) ( ORANGE ) ( YELLOW ) (GREEN)

Works Related Projects/Department: Venetia Cotai, Macau Works Related Projects/Department Code: WP 5115 (Top Builders) Type of Activity Operation: Prefabricated Bathroom Analysis by: Edward Leung Location: Hotel Tower

Rating of Harm Item Risk Existing Control Measures

Probability1 Consequences2 Risk

Level3 Recommended Action Remark

1 Personal injury - Worker should attend Safety Induction Training provided by GAMMON.

- Provided appropriate PPE as job required.

- Keep minimum stock of PPE to be maintained for issuing.

3

1

3 (Green)

Safety Induction Training, Specific PPE required

2 eye injury Noise nuisance Body Injury

- No patent defect on the electric tools to be used.

- Appropriate electric tools shall be selected.

- Monthly inspection of the tools by registered electrician.

- Fence off the working areas to prevent unauthorized entry.

- Ensure the workers Wear long sleeve Protective cloths & safety boot

- Safety gloves & eye protector.

2 3 6

(Green)

Specific PPE required

Training required

3 Twisted , slipping, tripping, hit by objects Muscle strain During manual handling

- Provide pre-work body exercise to minimize the risk of injury

- Wear long sleeve safety shoes to protect the ankle and foot.

- Use the mechanical equipment if possible.

- Always keep the workplace dry and tidy.

2 2 4 (Green)

Morning Pre-work exercise








4 Fire - Flammable materials and goods must be kept away from the workplace.

- Provide fire extinguishers at the workplace and storage yards.

- Clean all the rubbish, paper, scraps all the time.

- Display “no smoking’ signage and no smoking is allowed at the workplace.

- Adequate ventilation

1 5 5 (Green)

Fire equipments Training, Specific Training

5 Collapse of working platform

- Appointed Registered professional inspect and sign for the workability of working platform of height above 1.8m.

3 3 9 (Yellow)

Specific Training

6 Fall of person at height

- 200mm high toe-board and fence at 450mm and 900mm to be installed.

- Prohibit to move the working platform if any worker on it.

2 4 8 (Yellow)

Specific Training & Safety Harness required








7 Falling objects from the working platform

- Working platform should be closely

planked with 200mm toe-board

equipped.

- No other works shall be carried out

under the activities that are working

above.

Chain block shall be used to the

materials that are heavy in weight and

large in size.

Fence off the working area with barrier and notice / warning sign should be provided.

4 2 8 (Yellow)

Specific Training & Safety Harness required

method statement for gypsum board suspended ceiling system

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