CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2 ACS/FORM/02/011 Method Statement, Shop Dwg Approval 2 Material Acceptance Prior backfilling Every ≤ 10.000m3 0r 01 lot/01sample Unsuitable Material:
Trang 1CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2 ACS/FORM/02/01
1 Method Statement, Shop Dwg Approval
2 Material Acceptance
Prior backfilling Every ≤ 10.000m3 0r 01 lot/01sample
Unsuitable Material: Consisting of highly organic clay or silt, including humus and topsoil; clay having a liquid limit exceeding 80an/or a plasticity index exceeding 55;
Consisting of such clinkers, clinker ashes, fly ashes and domestic ashes Sand; free of organic matter and shall not contain more than 15% by weight of clay or silt Gravel, Crushed Stone; strong matrerial of approved quality containing 15% or less of soil and sand by weight
3 Preparation Works
Detection
Approved Ministry of
3,2
Check & Protect to Existing underground
service (Power supply cable, Water supply
pipe, Drainage, Cable net work, Telephone
cable,…)
Survey Setting Out
Hand over & Take over Coordinate markers,
level markers, Gridlines
Survey Point & Temporary Benchmarks
Survey the exsting ground level
Marking for Location & Perimeter of area to be
Tempory Facilities for Excavation
Retaining Structure Dewatering
dewatering trench to egde of excavation pit
4 Excavation to Formation Level
Top edges of cutting: neatly rounded off Protect all slope:
formed slopes, from soil erosion or softening due to rain or surface water, Tolerances: ±0.150m measured perpendicular to the slope surface
Shop Dwg Method Statement
Legend:
INSPECTION & TESTING PLAN
Hold point
KOA VN Checking & Inspection
Witness Surveillance Document review
References
Survey instruments
Before doing earth work As per Design Drawing, Benchmarks Handover Document,
Possession of Site Plan
As per approval MS Safe Stable
All Survey instruments
Pre-Excavation Inspection Request
Design Dwg
Adjustment
Benchmarks Handover Docs
Benchmarks Handover Docs
Design Dwg Posseeeion
of Sife Plan
Method Statement
3,3
3,4
Providing
Trang 25 Pile Heads Cut Off
thickness left
5,6Repair broken egde/over chip with approved
material
Accetance of Rebar work
Pilling Dwg Rebar checklist Record 5,8Round Steel plate & rebar Intallation-Plug
6 Lean Concrete
6,2 Approved Mix Design & Mixing Radio Visual, Review
6,3 Level peg installation
6,4 Lean Concrete Casting & Curing Visual, Control
7 Compacted Soil
7,1Comapacted to all excavated area with vibrator
roller etc
Visual (CBR/SPT test if
8 Pre-Back Filling - Preparation work
8,1Underground structure finised & as built survey
report for inspection
8,2 Underground M&E Items finished & inspected
8,3
Marking with paint th thickness of bacfilling
layers onto underground structure shaft (300
mm per layer)
8,4Protection for underground structure, water
proofing membrane during compaction
8,5Removal of rubbish, Tree Roots, debris, big
No rubbish & any different sizes of soil blocks, big stones remained…
Visual, Measuring Tape
As per PillingDesign documents
Pile Cut Inspection Request
After cutting
Lean concreting Inspection Request
Adjustment
As per Method of Statement
As per Shop Dwg ±5.0 mm for level, ±10.0mm for dimension
Curing for at least 24 hours prior to next steps All
At completion
Method Statement Shop Dwg
Document Review, Visual check, Measuring tape
Before back filling Ensure all the underground structure are inspected,
accepted and protected
Check list Records As
Adjusting