225 Masonry Final UPDATED ACTUAL
Exam Questions and CORRECT Answers
____, ____, 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
The hollow core of masonry units are often flared on the face of the web to: (choose all that
apply) - CORRECT ANSWER - provide a broader base for mortar bedding
provide better gripping for the masons
Block dimensions are commonly referred to in this order. - CORRECT ANSWER - width,
height, length
Concrete masonry units are manufactured using high slump concrete. - CORRECT
ANSWER - false
Hollow and solid load-bearing block with ASTM designation C90 have a minimum compressive
strength in psi of a single unit of: - CORRECT ANSWER - 1700 psi
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"
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
, Normal weight and light weight masonry units derive their name from the density of the: -
CORRECT ANSWER - aggregates
In the US, concrete masonry units are manufactured to conform to requirements of the -
CORRECT ANSWER - ATSM
Grouting of brick or block serves the following purposes: (Choose all that apply) - CORRECT
ANSWER -?
It is acceptable to retemper mortar by adding water and further mixing. - CORRECT
ANSWER - true
Mortar and grout can be used interchangeably - CORRECT ANSWER - false
After all materials for the mortar have been batched, they should be mixed for: - CORRECT
ANSWER - 3-5 minutes
Grout in masonry construction: - CORRECT ANSWER - acts compositely with
reinforcement to resist implied loads
The recommended type of mortar for exterior elements that are at or below grade is: -
CORRECT ANSWER - type s
Efflorescence is caused by: - CORRECT ANSWER - soluble salts that have emerged from
below the surface
The most important quality of a masonry mortar is - CORRECT ANSWER - workability
Mortar in masonry construction: (Choose all that apply) - CORRECT ANSWER -?
Exam Questions and CORRECT Answers
____, ____, 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
The hollow core of masonry units are often flared on the face of the web to: (choose all that
apply) - CORRECT ANSWER - provide a broader base for mortar bedding
provide better gripping for the masons
Block dimensions are commonly referred to in this order. - CORRECT ANSWER - width,
height, length
Concrete masonry units are manufactured using high slump concrete. - CORRECT
ANSWER - false
Hollow and solid load-bearing block with ASTM designation C90 have a minimum compressive
strength in psi of a single unit of: - CORRECT ANSWER - 1700 psi
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"
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
, Normal weight and light weight masonry units derive their name from the density of the: -
CORRECT ANSWER - aggregates
In the US, concrete masonry units are manufactured to conform to requirements of the -
CORRECT ANSWER - ATSM
Grouting of brick or block serves the following purposes: (Choose all that apply) - CORRECT
ANSWER -?
It is acceptable to retemper mortar by adding water and further mixing. - CORRECT
ANSWER - true
Mortar and grout can be used interchangeably - CORRECT ANSWER - false
After all materials for the mortar have been batched, they should be mixed for: - CORRECT
ANSWER - 3-5 minutes
Grout in masonry construction: - CORRECT ANSWER - acts compositely with
reinforcement to resist implied loads
The recommended type of mortar for exterior elements that are at or below grade is: -
CORRECT ANSWER - type s
Efflorescence is caused by: - CORRECT ANSWER - soluble salts that have emerged from
below the surface
The most important quality of a masonry mortar is - CORRECT ANSWER - workability
Mortar in masonry construction: (Choose all that apply) - CORRECT ANSWER -?
