-2027 Actual Complete Real Exam Questions And Correct
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What are the parameters for maximum coarse aggregate size
permitted in concrete mix? - ANSWER-1/5 the narrowest
dimension between sides of forms, 1/3 the depth of a slab, 3/4
the minimum clear spacing between individual reinforcing bars,
tendons, or ducts
Water for concrete mixing must conform to what ASTM
standard? - ANSWER-
C1602
Non-potable water can be used in concrete without any kind of
testing. True or
False? - ANSWER-
False.
Potable water can be used without testing.
When is concrete considered batched? - ANSWER-When water
is added
, The amount of water in pounds divided by the amount of
cement in pounds. -
ANSWER-
Water/cement ratio
How much does water weigh per gallon, approximately? -
ANSWER-8.34
pounds
What is the equation for water/cement ratio - ANSWER-Weight
of water divided
by total weight of cement
mixture
Most commercial mix designs for structural concrete specify
a ratio between
what two numbers? - ANSWER-
.40 & .50
According to section 19.2.1.1, no structural concrete shall be
less than _______
psi in strength. -
ANSWER-2,500
What is the maximum compressive strength requirement
of concrete? -
ANSWER-No maximum, unless specified in special
seismic cases