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CNS 220 Final Questions and Correct
Answers/ Latest Update / Already Graded
Masonry units like brick and concrete blocks are strong in compression
but weak in tension
Ans: True
Which type of mortar is typically used for load-bearing masonry walls?
Ans: Type M
The bond between masonry units and mortar is crucial for the overall
strength of the wall
Ans: True
What is the primary purpose of control joints in masonry walls?
Ans: To allow of expansion and contraction
Concrete masonry units can be either load-bearing or non-load-
bearing
Ans: True
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Which of the following is a common defect in masonry construction?
Ans: Efflorescence and spalling
The compressive strength of masonry depends only on the masonry
units and not the mortar
Ans: False
Which mortar type is considered the weakest and is typically used for
interior non-load-bearing walls?
Ans: Type O
Water absorption in masonry units affects the curing of mortar and
bond strength
Ans: True
Which test is commonly used to determine the compressive strength
of masonry units?
Ans: Compression Test
Concrete was invented in England during the Industrial Revolution
All rights reserved © 2025/ 2026 |
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Ans: False
What does w/c refer to?
Ans: Water to cement
The hardened mixture of cement, water, and aggregate is technically
cement
Ans: False
What is concrete that has W/cm ratio of 0.4 or lower used for?
Ans: Low permeability, high strength
Cement is another name for concrete
Ans: False
Concrete is a mixture of cement, water, aggregates, and sometimes
admixtures or other cementitious materials
Ans: True
All rights reserved © 2025/ 2026 |
CNS 220 Final Questions and Correct
Answers/ Latest Update / Already Graded
Masonry units like brick and concrete blocks are strong in compression
but weak in tension
Ans: True
Which type of mortar is typically used for load-bearing masonry walls?
Ans: Type M
The bond between masonry units and mortar is crucial for the overall
strength of the wall
Ans: True
What is the primary purpose of control joints in masonry walls?
Ans: To allow of expansion and contraction
Concrete masonry units can be either load-bearing or non-load-
bearing
Ans: True
All rights reserved © 2025/ 2026 |
, Page |2
Which of the following is a common defect in masonry construction?
Ans: Efflorescence and spalling
The compressive strength of masonry depends only on the masonry
units and not the mortar
Ans: False
Which mortar type is considered the weakest and is typically used for
interior non-load-bearing walls?
Ans: Type O
Water absorption in masonry units affects the curing of mortar and
bond strength
Ans: True
Which test is commonly used to determine the compressive strength
of masonry units?
Ans: Compression Test
Concrete was invented in England during the Industrial Revolution
All rights reserved © 2025/ 2026 |
, Page |3
Ans: False
What does w/c refer to?
Ans: Water to cement
The hardened mixture of cement, water, and aggregate is technically
cement
Ans: False
What is concrete that has W/cm ratio of 0.4 or lower used for?
Ans: Low permeability, high strength
Cement is another name for concrete
Ans: False
Concrete is a mixture of cement, water, aggregates, and sometimes
admixtures or other cementitious materials
Ans: True
All rights reserved © 2025/ 2026 |
