Reinforced Concrete Practice Test 1

30 Questions  I  By Dduarte on September 9, 2009
You have 1 hour to complete this test.

  

Question Excerpt

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1.  A strength test shall be the average of the strengths of ________ cylinders made from the same sample of concrete and tested at ____ days or at test age designated for determination of f’c.
A.
B.
C.
D.
2.  Beams, girders, or slabs supported by columns or walls shall not be cast or erected until concrete in the vertical support members is no longer plastic. 
A.
B.
3.  A standard hook has a ___ degree bend plus 12 d(bar diameters) extension at the free end of bar
A.
B.
C.
D.
4.  The minimum clear spacing between parallel bars in a layer shall be db, but not less than ______ inch.
A.
B.
C.
D.
5.  All nonprestressed bars shall be enclosed by lateral ties, at least No. 3 in size for longitudinal bars No. ___ or smaller, and at least No. 4 in size for No. 11, No. 14, No. 18 and bundled longitudinal bars.
A.
B.
C.
D.
6.  Except for ________ steel, steel reinforcement with rust, mill scale, or a combination of both shall be considered satisfactory, provided the minimum dimensions (including height of deformations) and weight of a hand-wire-brushed test specimen comply with applicable ASTM specifications referenced in 3.5
A.
B.
C.
D.
7.  When total quantity of a given class of concrete is less than ________  cubic yards, strength tests are not required when evidence of satisfactory strength is submitted to and approved by the building official.
A.
B.
C.
D.
8.  Tolerance for longitudinal location of bends and ends of reinforcement shall be +/- _____ inches
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B.
C.
D.
9.  Concrete in an area represented by core tests shall be considered structurally ________ if the average of three cores is equal to at least 85 percent of f’c and if no single core is less than ______ percent of f’c.
A.
B.
C.
D.
10.  Form supports for prestressed concrete members shall not be removed until sufficient ________ has been applied to enable prestressed members to carry their dead load and anticipated construction loads. 
A.
B.
C.
D.
11.  In reference to removal of forms, shores, and reshoring, sufficient strength shall be demonstrated by ________ _________ considering proposed loads, strength of forming and shoring system, and concrete strength data.
A.
B.
C.
D.
12.  In reference to cold weather requirements all concrete materials and all reinforcement, forms, fillers, and ground with which concrete is to come in contact shall be free from ______. 
A.
B.
C.
D.
13.  Conduits, pipes, and sleeves shall be permitted to be considered as replacing structurally in compression the displaced concrete provided they are of uncoated or galvanized iron or ______ not thinner than standard schedule 40 steel pipe.
A.
B.
C.
D.
14.  Samples for strength tests of each class of concrete placed each day shall be taken not less than once a day, nor less than once for each _______ cubic yards of concrete.
A.
B.
C.
D.
15.  What is the minimum cover (in inches) for reinforcement in concrete cast against and permanently exposed to earth?
A.
B.
C.
D.
16.  In reference to conduits and pipes embedded in concrete, conduit/pipe shall not be larger in outside dimension than ____ the overall thickness of slab, wall, or beam in which they are embedded.
A.
B.
C.
D.
17.  Procedures for protecting and curing concrete shall be improved when strength of field-cured cylinders at test age designated for determination of f’c is less than _____ percent of that of companion _________-cured cylinders.  
A.
B.
C.
D.
18.  Concrete (other than high-early strength) shall be maintained above _____ degrees F and in a moist condition for at least the first _____ days after placement, except when cured in accordance with 5.11.3
A.
B.
C.
D.
19.  Water shall be ______ from place of deposit before concrete is placed unless a ______ is to be used or unless otherwise permitted by the building official.
A.
B.
C.
D.
20.  For the strength level of an individual class of concrete to be considered satisfactory, no individual strength test can fall below f’c by more than ______ psi when f’c is 5000 psi or less.
A.
B.
C.
D.
21.  Clear spacing between spirals shall not exceed ___ in., nor be less than ___ in.
A.
B.
C.
D.
22.  What is the minimum cover (in inches) for primary reinforcement in a concrete beam not exposed to weather or in contact with the ground?
A.
B.
C.
D.
23.  For cast-in-place construction, size of spirals shall not be less than ____ in. diameter.
A.
B.
C.
D.
24.  During hot weather, proper attention shall be given to ingredients, production methods, handling, placing, protection, and curing to prevent excessive concrete temperatures or water evaporation that could impair required _______ or serviceability of the member or structure. 
A.
B.
C.
D.
25.  For bundled bars, minimum concrete cover shall be equal to the equivalent diameter of the bundle, but need not be greater than ____ in.; except for concrete cast against and permanently exposed to earth, where minimum cover shall be 3 inches.
A.
B.
C.
D.
26.  In spirally reinforced or tied reinforced compression members, clear distance between longitudinal bars shall be not less than 1.5db nor less than ______  in. 
A.
B.
C.
D.
27.  Bars larger than No. ____ shall not be bundled in beams.
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B.
C.
D.
28.  Reinforcement partially embedded in concrete shall not be field _______, except as shown on the design drawings or permitted by the engineer. 
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B.
C.
D.
29.  What is the tolerance on minimum concrete cover for an 8 inch thick reinforced concrete wall?
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B.
C.
D.
30.  High-early-strength concrete shall be maintained above ______ degrees F and in a moist condition for at least the first ____ days, except when cured in accordance with 5.11.3
A.
B.
C.
D.
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