QUESTIONS AND ANSWERS
100% PASS
Hollow and solid load-bearing block with ASTM designation C90 have a minimum
compressive strength in psi of a single unit of: - ✔✔1700 psi
Using locally available sands, cements, and coarse aggregates to produce concrete block
of desired color is recommended because - ✔✔It will result in a more easily duplicated
color in the event of future additions to the structure
The hollow core of masonry units are often flared on the face of the web to: -
✔✔Provide a broader base for mortar bedding
Provide better gripping for the masons
Block dimensions are commonly referred to in this order. - ✔✔Width, Height, Length
T or F:Concrete masonry units are manufactured using high slump concrete - ✔✔False
What is the typical size of concrete block, also called concrete masonry units (CMU)? -
✔✔8x8x16
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 1
, Modular masonry units are based on a module size and are reduced by the thickness of
a standard mortar joint which is: - ✔✔3/8"
In the US, concrete masonry units are manufactured to conform to requirements of the -
✔✔American Society for Testing and Materials
Normal weight and light weight masonry units derive their name from the density of
the: - ✔✔Aggregates
____, ____, and ____ describe the relative smoothness or graininess of the masonry unit
texture. - ✔✔Fine, Medium, Coarse
Grouting of brick or block serves the following purposes: - ✔✔It transfers stresses from
the masonry to the reinforcing steel when a wall is subjected to lateral forces
It bonds the wythes together in multi wythe wall construction
It increases the cross-sectional area of the wall and aids in resisting vertical loads and
lateral shear loads
T or F: It is acceptable to retemper mortar by adding water and further mixing. -
✔✔True
Mortar in masonry construction: (Choose all that apply) - ✔✔Creates a tight seal
between units against the entry of air and moisture
Compensates for slight size variations in the units
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 2