NOTE: Specify load tests when needed to confirm
design capacities. At least one caisson location
should be load tested in each area of substantially
different subsoil conditions. Indicate number,
size, and location of test caisson and sequence.
**************************************************************************
Submit [four] [_____] copies of load test reports before installing
caissons.
1.4.5
Test Caissons
Test caissons shall be constructed where directed and, if approved,
retained as part of the work.
PART 2
PRODUCTS
2.1
MATERIALS
2.1.1
Concrete Work
**************************************************************************
NOTE: Insert the correlated section number and
title or include concrete specification in this
section, in the blank below using the proper format
per UFC 1-300-02.
**************************************************************************
[_____], as modified herein:
2.1.1.1
Strength
**************************************************************************
NOTE: Compressive strength (28 day strength or f'c)
of concrete shall be 25 MPa 3000 psi or higher.
When loads are high and drilling conditions
difficult, it may be more economical to use 30 MPa
4000 psi or 35 MPa 5000 psiconcrete and larger
shafts rather than a smaller shaft with reinforcing
or permanent casing. If there is a reinforcing
cage, or if there is a large bell, the ability of
the concrete to flow between reinforcing bars, or to
completely fill the bell, is a matter of prime
importance. For these piers, the concrete should
have a slump of about 152 mm 6 inches. Slump may
vary, depending on the mix, between 102 mm 4 inches
and 152 mm 6 inches. A maximum size of 19 mm 3/4
inchis appropriate under these circumstances.
**************************************************************************
Concrete strength shall be [_____] MPa [_____] psi at 28 days. Slump shall
be from [_____] to [_____] mm [_____] to [_____] inches.
2.1.1.2
Coarse Aggregate
**************************************************************************
NOTE: Coarse aggregates shall be 25.4 mm one inch
size maximum. Coarse aggregate may be smaller where
reinforcement spacing is close or where dimension of
SECTION 02468N
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