• Level 1
•Submission of concrete
design mix to superintending officer
• Level 2
•Upon approval of the
design mix, Contractor shall prepare for concrete trial mix .
•Trial mixed shall be
perform before any concreting works start.
•The trial mixed will
consist of delivery time required from the mixing plan to construction site.
Delivery time shall not exceed 2 hour from the time of mixing until pouring
concrete. after 2 hours Concrete will
start to harden ( initial set)
• Level 3
•The trial mix also
will produce the Slump value and
the strength of the concrete for 3 days, 7 days, 14 days and 28
days
•If the first trial
mixed fail, contractor must repeat the trial
mixed until it meet the requirement or contractor will submit new design
mixed and repeat the step 1 to 3 until it achieved the requirement.
• Level 4
•The Proposed concrete
mixed can than be use for the construction after it meet all the minimum
requirement.
• Level 5
•Before any concreting
work, Contractor shall submit request for inspection form to enable S.O or
S.O.R do the inspection for installation of Reinforcement, Formworks and any other requirement.
•No concreting works
shall proceed until the S.O or S.O.R had given written approval to proceed
concreting via Approval chit.
•Approval chit shall be
submitted at least 1 day prior to concreting works.
• Level 6
•Upon receiving
approval for proceed with concreting work, contractor shall ensure that they
have at least 2 concrete vibrator,
lifting machine, concrete bucket and gunny sac for concrete curing.
•Level 7
•There shall be no
concreting works shall proceed during rainy days. Shall there be rain,
contractor must immediately stop the work.
•On the concreting day
every truck of concrete shall be tested for its slump and concrete cube shall
be taken and mark clearly with the date and location of the concreting work.
•Number of cube shall
be at least 6 numbers. 3 numbers each for 7 days strength and 28 days strength
or else as directed by S.O or S.O.R.
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