NCARB SPD – Questions And Correct Answers (Multiple
Choice)
1. Which of the following pieces of information are typically included in a
subsurface investigation report?
Check the four that apply.
A. Results of field tests
B. Results of laboratory tests
C. Recommended types of foundations
D. Soil sieve analysis
E. Boring location plan
F. Recommended treatment for contaminated soil Right Ans - *A, B, C, E.*
A. Results of field tests
B. Results of laboratory tests
C. Recommended types of foundations
E. Boring location plan
2. Which of the following defines the sudden loss of
shearing resistance in a cohesionless soil?
A. Plasticity
B. Liquefaction
C. A collapsing soil
D. An expansive soil Right Ans - *B. Liquefaction*
3. The purpose of the element X in the diagram above is to
A. increase hydrostatic pressure on the wall
B. reduce hydrostatic pressure on the wall
C. maintain uniform hydrostatic pressure on the wall
D. decrease vapor pressure in the basement room Right Ans - *B. reduce
hydrostatic pressure on the wall*
, 4. The diagrams above indicate which of the following about the relationship
between wind and the mass of high-rise buildings?
A. Wind acts the same on all vertical surfaces regardless of mass and material
differentiation.
B. More wind turbulence is created at the street level of wide, smooth-
surfaced facades.
C. Wind turbulence is increased at street level by stepped building forms.
D. Wind turbulence is of minimum concern in the relationship between high-
rise buildings and the street. Right Ans - *B. More wind turbulence is
created at the street level of wide, smooth-surfaced facades.*
5. Building failure can often be traced to unstable subsoil conditions. Which of
the following subsurface conditions is likely to cause differential settlement of
building foundations?
A. Large beds of clay contained in gravel
B. Small boulders dispersed in gravel
C. Stratified rock
D. A deep layer of dry sand and gravel Right Ans - *A. Large beds of clay
contained in gravel*
6. In a residential development composed of large building lots, on-site
sewage disposal for each lot is permitted subject to the suitability of the soil.
Which of the following soil investigations should the architect request?
A. Percolation test
B. Evaporation test
C. Test for soil alkalinity
D. Test for soil density Right Ans - *A. Percolation test*
7. Which of the following would be the best design-with-climate strategy in
the layout of a new town in a cool region such as Winnipeg or Minneapolis?
A. The town structure should be densely grouped; larger
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