225 Masonry Final Exam 2025
Questions and Answers 100% Pass
____, ____, and ____ describe the relative smoothness or graininess of the masonry unit
texture - ✔✔fine, medium, coarse
What is the typical size of concrete block, also called concrete masonry units (CMU)? -
✔✔8x8x16
The hollow core of masonry units are often flared on the face of the web to: (choose all
that apply) - ✔✔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
Concrete masonry units are manufactured using high slump concrete. - ✔✔false
Hollow and solid load-bearing block with ASTM designation C90 have a minimum
compressive strength in psi of a single unit of: - ✔✔1700 psi
Modular masonry units are based on a module size and are reduced by the thickness of
a standard mortar joint which is: - ✔✔3/8"
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 1
, 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
Normal weight and light weight masonry units derive their name from the density of
the: - ✔✔aggregates
In the US, concrete masonry units are manufactured to conform to requirements of the -
✔✔ATSM
Grouting of brick or block serves the following purposes: (Choose all that apply) - ✔✔?
It is acceptable to retemper mortar by adding water and further mixing. - ✔✔true
Mortar and grout can be used interchangeably - ✔✔false
After all materials for the mortar have been batched, they should be mixed for: - ✔✔3-5
minutes
Grout in masonry construction: - ✔✔acts compositely with reinforcement to resist
implied loads
The recommended type of mortar for exterior elements that are at or below grade is: -
✔✔type s
Efflorescence is caused by: - ✔✔soluble salts that have emerged from below the surface
The most important quality of a masonry mortar is - ✔✔workability
Mortar in masonry construction: (Choose all that apply) - ✔✔?
Mortar should be used within ___ hours after mixing. - ✔✔2.5
Lighter weight aggregate masonry units have a greater fire endurance than one
constructed of normal weight aggregate. - ✔✔true
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 2
Questions and Answers 100% Pass
____, ____, and ____ describe the relative smoothness or graininess of the masonry unit
texture - ✔✔fine, medium, coarse
What is the typical size of concrete block, also called concrete masonry units (CMU)? -
✔✔8x8x16
The hollow core of masonry units are often flared on the face of the web to: (choose all
that apply) - ✔✔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
Concrete masonry units are manufactured using high slump concrete. - ✔✔false
Hollow and solid load-bearing block with ASTM designation C90 have a minimum
compressive strength in psi of a single unit of: - ✔✔1700 psi
Modular masonry units are based on a module size and are reduced by the thickness of
a standard mortar joint which is: - ✔✔3/8"
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 1
, 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
Normal weight and light weight masonry units derive their name from the density of
the: - ✔✔aggregates
In the US, concrete masonry units are manufactured to conform to requirements of the -
✔✔ATSM
Grouting of brick or block serves the following purposes: (Choose all that apply) - ✔✔?
It is acceptable to retemper mortar by adding water and further mixing. - ✔✔true
Mortar and grout can be used interchangeably - ✔✔false
After all materials for the mortar have been batched, they should be mixed for: - ✔✔3-5
minutes
Grout in masonry construction: - ✔✔acts compositely with reinforcement to resist
implied loads
The recommended type of mortar for exterior elements that are at or below grade is: -
✔✔type s
Efflorescence is caused by: - ✔✔soluble salts that have emerged from below the surface
The most important quality of a masonry mortar is - ✔✔workability
Mortar in masonry construction: (Choose all that apply) - ✔✔?
Mortar should be used within ___ hours after mixing. - ✔✔2.5
Lighter weight aggregate masonry units have a greater fire endurance than one
constructed of normal weight aggregate. - ✔✔true
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 2
