2. 1. General.
2. Sequence of works.
3. Backfill or excavate to the design level
4. Formwork design.
5. Placing of concrete.
6. Compaction of concrete.
7. Curing
8. Dewatering
9. Electricity
10.Equipment & Manpower
Appendix
A. Plan of three main building
B. Formwork design & Typical of filling materials
1. General
This method statement describe how we construct lean concrete for Building Works
3. Pleased refer to Appendix A for the plan of three main buildings.
This method statement covers for the lean concrete of all Building Works. The filling
material under lean concrete may be varied in difference location.
Concrete class shall be approved ready-mix concrete B7.5 (Grade 15NM/m2)
Excavation or Backfilling
to Design Level
2. Sequence of works.
Leveling & Compaction
Setting Formworks
Placing lean concrete
Curing for Concrete
3. Backfill or Excavate to the design level
Excavation works will be carried out by manpower or by backhoe depend on soil
condition.
Backfilling works will carry out layer by layer. Thickness of each layer is not more than
300mm.
4. a) Filling under piles cap of the building have piling foundation
Material using for backfilling works will be existing soil on site area or other approved
material if the existing soil is not enough.
b) Filling under directed foundation
The ground will be excavated up to soil treatment level, and then backfill up to design
level following approved design & material. Design of sub layer and proposed material
shall be submit separately.
Please refer to Appendix B for typical of filling material.
4. Formworks Design
After finish leveling and compaction works, formwork will be set out.
Please refer to Appendix B for formworks design.
Timber or steel will be used for formwork.
5. Placing of Concrete
Approved ready-mix concrete will transported from batching plant to the site by mixer
truck.
From mixer truck concrete will be delivered to casting location by bucket & wheel barrow
then pour out by showel or directly to the position.
6. Compaction of Concrete.
Concrete after pouring to position shall compacted by immersion vibrator.
7. Curing.
Curing of concrete will be carried out by spraying water periodically to the surface of the
newly placed concrete.
8. Dewatering
Two nos of water pump (one for spare) shall be arranged on site with enough hose
9. Electricity
Electricity will supplied by stand by generator on site.
5. 10. Equipment & Manpower
a)Equipment
Equipment Unit Quantity
Mixer truck Nos 02
Tamping Ramer No 01
Vibrator Nos 02
Wheel barrow Nos 05
Water Pump 2 HP No 01
Water Pump 1HP No 01
Generator 15KVA No 01
Generator 10KVA Nos 02
Bucket Nos 10
Showel Nos 05
Trowel Nos 05
b)Equipment
Description Unit Quantity
Supervisor No 01
Surveyor Nos 02
Foreman No 01
Electrician No 01
Worker Nos 08
