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Quality Control of Piling
Nominate the supplier of pile
Submit Method Statement for piling including:
a) Sets calculation for driven piles
b) Details of equipments
c) Welder personnel qualifications
d) Details of Static load test procedures
e) Details of Pile Driving Analysis Test (PDA)
Consultant commentSubmit pile catalogue and mill certificate
Details requirement:
a) SSRW 10.8.2.1
b) -c) Consultant comment
d) SSRW 10.8.2.2
e) SSRW 10.8.2.2
f) SSRW 10.8.4.2
Additional details required for micropile:
a) Tensile test report for API pipe
b) Water test report
c) Four corner pile drill record
d) Grout material design mix
e) Grout trial mix
f) Test cube
Details requirement:
a) SSRW 10.5.2.1
b) Consultant comment
c) SSRW 10.5.2.1
d) SSRW 10.5.2.1
e) SSRW 10.5.5.2
Additional details required for bored pile
a) Mill certificate/tensile test for rebar
b) Four corner bored pile record
c) Concrete design mix
d) Concrete trial mix
e) Test cube and Slumpt Test
Consultant commentPile Driving Analysis Test (PDA)
Details requirement :
SSRW 10.11.7Static lad test
Submit piling records
Details requirement :
75 mm tolerancesAs-built pile positions
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PILING
1
Study the drawings on the type of piles used, jointing details,
details of pile shoe,
starter bar details into pile cap.
2
RC pile or Spun pile, ensure to have a copy of catalogue on the
approved size and class.
Piles delivered to site, check for visual cracks either
longitudinally or cross-sectional.
The 28 days compressive cube strength must be attained before
any actual piling works.
Piling method statement submitted by contractor with set
calculation for consultant's approval.
3
Micro piles or bored piles, piling method statement submitted by
contractor.
Cutting of sample of API pipes must be witnessed by site staff
or rebar delivered to site andmake marking on the sample.
Tensile testing of the API pipe or rebar sample on its yield
stress.
All testing and recorded results send to consultant for
approval.
4
Test pile shall be continuously monitored with a Pile Driving
Analysis (PDA) throughout the entiredriving process.
Follow strictly the construction drawing.
The PDA test will indicate any crack occurs at the pile or
joint, overstress in the pile as well as pilecapacity.
The PDA report shall submit to consultant approval priors to
Static Load Test.
5
Static Load Test method statement submitted by contractor.
Photographs are taken of the overall view, setting out and
record all details by using Static Load
Test Checklist.
6Issue memorandum to inform the contractor of the pile
combination to minimize wasteage.
Site staff shall use relevant piling record form.
7
After all piles have been driven, instruct the contractor to cut
piles to cut-off levels and surveythe as-built pile position in
Northing and Easting.
The contractor shall submit as-built pile position for
consultant's approval priors toconstruction of pile cap.
