Working Hours ................................................................................................................... 5
9.
Site Contacts ....................................................................................................................... 5
1 of 5
Method Statement For Demolition Works Of Covered Walkway At xxxxxxxxxxxxx
1. Introduction The existing covered walkway at xxxxxxxxxxxxxxxxx to be demolished. The existing structure shall be removed completely to build a new covered walkway at same locations. The existing walkway is a cantilevered structure supported by steel elements and covered with roof tiles. 2. Details of plant and machinery 2.1.
Skip Tank - 1 No
2.2.
Oxygen Acetylene cutting torch – 1 No
2.3.
Electric Concrete breaker – 1 No
2.4.
Mini- excavator (if required) – 1 No
3. Preparative Activities and Important Remarks 3.1.
All demolition works shall be comply SS 557: 2010 Code of Practice for Demolition. Also the demolition of structure shall be carried out in accordance with the provisions set out in the Workplace Safety and Health Act.
3.2.
All underground and above ground services at the site and around the site perimeter shall be detected and a services plan will be produced. i.e : A) Electricity; B) Water; C) Gas; D) Telecommunication; E) Drainage;
3.3.
Pre construction Survey shall be carried out including the proposed demolition site and the vicinity and a report shall be prepared. The report will sign by neighbours and shall be submitted to consultants.
3.4.
All utility companies and relevant agencies shall be consulted prior to demolition of the structure if the corresponding services are going to be affected.
3.5.
All the services within the area of demolition shall be terminated or capped off and the last manhole/inspection chamber shall be sealed.
3.6.
The demolition plan shall ensure that during the course of demolition, no existing utilities in the vicinity of the demolition sites are affected by the demolition operation. 2 of 5
Method Statement For Demolition Works Of Covered Walkway At xxxxxxxxxxxxx
3.7.
RTO shall be provided for standing supervision during the demolition operation.
4. Method of Demolition 4.1.
Top down method shall be implemented for the demolition.
4.2.
Super structure and roof dismantling shall be carried out stage by stage without affecting the structural stability.
4.3.
Roof shall be dismantled at first. The removal order shall be roof tiles and other roof partitions then battens and finally rafters to follow.
4.4.
Then the structural elements shall be dismantled. The dismantling area shall be identified and be checked on the discontinuity of structural system prior to dismantle.
4.5.
In the case when structural stability of beams is affected, the affected beams shall be propped prior to loss of support or restraint. Propping shall be provided until the confirmation of structural stability
4.6.
The demolition order for the super structure shall be secondary beams, main beams and finally columns.
4.7.
Plasma cutting shall be used if necessary to disconnect welded joints.
4.8.
Once superstructure is removed, floor demolition shall be started.
4.9.
Floor slab shall be demolished by gradually breaking away from the edge of slab.
4.10.
The reinforcement shall be remained and be cut off after the concrete is broken away.
4.11.
As the final process of the demolition, substructure shall be removed. First the stumps then footings shall be hacked away. If require, an excavator shall be provided to remove the footing.
4.12.
Any holes/pits found shall be immediately backfilled with a suitable material
5. Safety Measures 5.1.
Risk assessment shall be carried out to identify hazards associated with the demolition process, assess such hazards and take reasonably practicable steps to eliminate or control the risks arising from those hazards.
5.2.
Workers shall possess valid work permit, SOC and in proper attire.
5.3.
Personal Protective Equipment shall be provided to workers prior to the start of work.
5.4.
Safety belts with associated safety harness and lifeline to be provided for the workers based on whenever required. 3 of 5
Method Statement For Demolition Works Of Covered Walkway At xxxxxxxxxxxxx
5.5.
The perimeter of demolition site shall be hoarded up firmly with proper sealing. And sufficient covering shall be provided to prevent dust and debris flying away to neighbourhood properties.
5.6.
Sufficient Temporary Warning Signboards, Safety Barriers and Protective Hoarding shall be provided and shall be maintained throughout the period of operation.
5.7.
Generally, there shall not be any site works during foul weather conditions.
6. Environmental Aspects 6.1.
Noise controlling shall be carried out in accordance to CP 49:1989 - Code of Practice for Noise Control on Construction and Demolition Sites.
6.2.
Noise monitoring equipment unit shall be provided according to National Environment Agency regulations.
6.3.
The noise monitoring equipment unit is installed as shown in the site plan.
6.4.
Vibration monitoring shall be installed on site as shown in the site plan.
6.5.
Method of demolition shall minimise noise emission as well as vibration generation.
6.6.
To minimize the dust impact, the structure shall be watered before demolition.
6.7.
Water shall be continuously sprayed during any crushing operation.
6.8.
Nettings/coverings shall be provided to minimise further dust spreading.
6.9.
Dust mitigation measures shall be adopted to minimise dust emissions.
6.10.
Burning of waste shall not be allowed.
6.11.
All debris generated shall be kept at a designated area and be removed at the end of the day to the skip tank.
6.12.
Proper housekeeping shall be maintained throughout the whole operation.
6.13.
Contractor shall be concerned about the neighbourhood cleanliness and shall take immediate remedial actions if the neighbourhood has been affected by this demolition activity.
7. Waterproofing 7.1.
The party wall or external wall shall be protected against infiltration and water seepage when it is exposed to the weather. Proper plastering method shall be carried out for this purpose.
7.2.
Proper covering such as gutter, flashing, canvas, etc. shall be provided at roof level to prevent water seeping into neighbouring unit. 4 of 5
Method Statement For Demolition Works Of Covered Walkway At xxxxxxxxxxxxx
8. Working Hours Monday to Friday – 9.00am to 7.00pm Saturday – 9.00am to 6.00pm (No noise generating activities shall be carried out) Sunday and Public holidays – No Work 9. Site Contacts
