CM 225 MASONRY FINAL UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Concrete masonry units are manufactured using high slump concrete - CORRECT
ANSWER - False
____, ____, and ____ describe the relative smoothness or graininess of the masonry unit texture -
CORRECT ANSWER - Fine, medium, coarse
What is the typical size of concrete block, also called concrete masonry units (CMU)? -
CORRECT ANSWER - 8x8x16
In the US, concrete masonry units are manufactured to conform to requirements of the -
CORRECT ANSWER - American Society for Testing and Materials
Using locally available sands, cements, and coarse aggregates to produce concrete block of
desired color is recommended because - CORRECT ANSWER - 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 - CORRECT
ANSWER - Provide a broader base for mortar bedding
Provide better gripping for the masons
Modular masonry units are based on a module size and are reduced by the thickness of a
standard mortar joint which is: - CORRECT ANSWER - 3/8%
Hollow and solid load-bearing block with ASTM designation C90 have a minimum
comprehensive strength in psi of a single unit of: - CORRECT ANSWER - 1700 PSI
, Block dimensions are commonly referred to in this order. - CORRECT ANSWER -
WxHxL
Normal weight and light weight masonry units derive their name from the density of the -
CORRECT ANSWER - Aggregates
Grout in masonry construction - CORRECT ANSWER - Acts compositely with
reinforcement to resist implied loads
The most important quality of a masonry mortar is - CORRECT ANSWER - Workability
Grouting of brick or block serves the following purposes - CORRECT ANSWER - It
bonds the wythes together in multi wythe wall construction
It transfers stresses from the masonry to the reinforcing steel when a wall is subjected to lateral
forces
It increases the cross-sectional area of the wall and aids in resisting vertical loads and lateral
shear loads
Mortar in masonry construction - CORRECT ANSWER - Creates a tight seal between
units against the entry of air and moisture
Bonds with joint reinforcement metal ties, and anchor bolts
Compensates for slight size variations in the units
Provides an architectural quality to exposed masonry structures
It is acceptable to retemper mortar by adding water and further mixing - CORRECT
ANSWER - True
After all materials for the mortar have been batched, they should be mixed for - CORRECT
ANSWER - 3-5 minutes
ACTUAL Exam Questions and CORRECT
Answers
Concrete masonry units are manufactured using high slump concrete - CORRECT
ANSWER - False
____, ____, and ____ describe the relative smoothness or graininess of the masonry unit texture -
CORRECT ANSWER - Fine, medium, coarse
What is the typical size of concrete block, also called concrete masonry units (CMU)? -
CORRECT ANSWER - 8x8x16
In the US, concrete masonry units are manufactured to conform to requirements of the -
CORRECT ANSWER - American Society for Testing and Materials
Using locally available sands, cements, and coarse aggregates to produce concrete block of
desired color is recommended because - CORRECT ANSWER - 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 - CORRECT
ANSWER - Provide a broader base for mortar bedding
Provide better gripping for the masons
Modular masonry units are based on a module size and are reduced by the thickness of a
standard mortar joint which is: - CORRECT ANSWER - 3/8%
Hollow and solid load-bearing block with ASTM designation C90 have a minimum
comprehensive strength in psi of a single unit of: - CORRECT ANSWER - 1700 PSI
, Block dimensions are commonly referred to in this order. - CORRECT ANSWER -
WxHxL
Normal weight and light weight masonry units derive their name from the density of the -
CORRECT ANSWER - Aggregates
Grout in masonry construction - CORRECT ANSWER - Acts compositely with
reinforcement to resist implied loads
The most important quality of a masonry mortar is - CORRECT ANSWER - Workability
Grouting of brick or block serves the following purposes - CORRECT ANSWER - It
bonds the wythes together in multi wythe wall construction
It transfers stresses from the masonry to the reinforcing steel when a wall is subjected to lateral
forces
It increases the cross-sectional area of the wall and aids in resisting vertical loads and lateral
shear loads
Mortar in masonry construction - CORRECT ANSWER - Creates a tight seal between
units against the entry of air and moisture
Bonds with joint reinforcement metal ties, and anchor bolts
Compensates for slight size variations in the units
Provides an architectural quality to exposed masonry structures
It is acceptable to retemper mortar by adding water and further mixing - CORRECT
ANSWER - True
After all materials for the mortar have been batched, they should be mixed for - CORRECT
ANSWER - 3-5 minutes
