& Answers
Which of the following publications is most useful for a Special Inspector? Module #1 - Correct
Answer - ACI 318 / Answer found in module
A ____ is a horizontal member that transfers loads laterally. - Correct Answer - Beam / See
Illustration 1D in module
Plain concrete refers to: - Correct Answer - Concrete with less than the minimum amount of
reinforcement / Answer found in module
A beam is primarily subject to _____ while a column is primarily subject to ______. - Correct
Answer - Flexure, compression / Answer found in module
The best place to look up definitions in ACI 318-14 is: - Correct Answer - Chapter 2 / Answer
found in module
Foundations cast at the same level as the soil grade are known as: Module #1 - Correct Answer
- Shallow / Answer found in Module. See Illustration 1F.
Concrete is a mixture of Module#2 - Correct Answer - Aggregate, sand, cement and water, /
Answer found in Module. See Illustration 2B.
Portland cement must conform to _______ and normal-weight aggregate must conform to
_______ in all concrete. - Correct Answer - ASTM C150, ASTM C33, / See ACI 318, 26.4.1.1.1
and 26.4.1.2.1
Structural normal weight concrete MUST contain/produce - Correct Answer - Potable or
non-potable water, cementitious material, and aggregate conforming to ASTM C33 or an
approved alternative equivalent. / Answer found in Module
Hydration - Correct Answer - Is an exothermic (heat producing), chemical reaction that begins
when water and cement are combined. / Answer found in Module
The maximum allowable nominal aggregate size for concrete used in a 6 inch thick slab is: -
Correct Answer - 2 inches / See ACI 318, 26.4.2.1.a.4.
, What must air entrainment admixtures conform to? - Correct Answer - ASTM C260 / See ACI
318, 26.4.1.4.1.a.3.
Adding water to a concrete mix will: - Correct Answer - Decrease the compressive strength /
Answer found in Module
A concrete mix design specifies a water/cement ratio of 0.45 maximum. When batched, a
particular load has a water/cement ratio of 0.38. Which of the following statements is true?
Module#2 - Correct Answer - The compressive strength will likely be higher than normal. / See
the module about Mix Designs and Water/Cement Ratio
An ASTM A615 #7 bar has the diameter of Module#3 - Correct Answer - 7/8 of an inch (#22) /
Answer found in Module
A low-alloy steel bar conforms to - Correct Answer - ASTM A706 / ACI 318, 20.2.1.3
Plain reinforcement is acceptable for use in structural concrete provided that - Correct Answer -
It is used only in spiral reinforcing / ACI 318, 20.2.1.1
A grade 60 bar has - Correct Answer - A minimum yield strength of 60,000 psi / Answer found in
Module. See also ASTM A615
Which bar has the largest nominal diameter? - Correct Answer - #9 bar, A and B plain bar and
deformed bar / See Illustration 3L, as well as ASTM A615.
Standard hooks for deformed bars in tension are either ____ or _____. - Correct Answer - 90
degrees or 180 degrees / ACI 318, Table 25.3.1
Bundled bars can have a maximum of ____ bars bundled together. - Correct Answer - 4 / See
ACI 318, 25.6.1.1.
The largest allowable rebar diameter allowed in bundled bars in beams is: - Correct Answer -
#11 / See ACI 318, 25.6.1.3.
Which type of rebar has the highest tensile strength? - Correct Answer - Grade 80 / Answer
found in Module. See also ASTM A615
Standard hooks for deformed bars in tension are either ____ or _____. - Correct Answer - 90
degrees or 180 degrees / ACI 318, Table 25.3.1
Bundled bars can have a maximum of ____ bars bundled together. - Correct Answer - 4 / See
ACI 318, 25.6.1.1.