Question 1

The flexural tensile bond strength of a masonry wall is a function of

Accepted Answer

A) the type of masonry units. 
B) the quality of workmanship. 
C) the compressive strength of mortar. 
D) the curing of mortar. 
E) all of the above. 
A) the type of masonry units. 
B) the quality of workmanship. 
C) the compressive strength of mortar. 
D) the curing of mortar. 
E) all of the above.

Question 2

A masonry unit that has no voids (e.g., no core holes)is referred to as a

Accepted Answer

A) 100% solid unit. 
B) solid unit. 
C) A or B. 
A) 100% solid unit. 
B) solid unit. 
C) A or B.

Question 3

Give the ASTM classification of mortar types and their respective applications.

Accepted Answer

The ASTM (American Society for Testing a

Question 4

Retempering of mortar means

Accepted Answer

A) adding sand to mortar. 
B) adding Portland cement to mortar. 
C) adding water to mortar. 
D) adding lime to mortar. 
A) adding sand to mortar. 
B) adding Portland cement to mortar. 
C) adding water to mortar. 
D) adding lime to mortar.

Question 5

IRA is a measure of the tensile strength of a brick.

Accepted Answer

A) True 
 B)False

Question 6

Mortar may be specified either by proportion specification or by property specification. Which of these two is more commonly used?

Accepted Answer

A) Property specification 
B) Proportion specification 
A) Property specification 
B) Proportion specification

Question 7

ASTM specifications classify masonry mortar into Type M, Type S, Type N, and Type O. The mortar can be specified based on the volume proportions of its three ingredients (Portland cement, lime, and sand)or based the mortar's strength. Which of the two specification methods-proportion specification or strength specification
-is commonly used?

Accepted Answer

Proportion

Question 8

The term CMU is generally used as an acronym for

Accepted Answer

A) concrete masonry unit. 
B) cement mortar underbed. 
C) concrete masonry underbed. 
D) clay masonry underbed. 
E) clay masonry unit. 
A) concrete masonry unit. 
B) cement mortar underbed. 
C) concrete masonry underbed. 
D) clay masonry underbed. 
E) clay masonry unit.

Question 9

ASTM specifications classify masonry mortar into Type M, Type S, Type N, and Type O. What is this classification based on?

Accepted Answer

The classification is based on

Question 10

In specifying the dimensions of a masonry unit, which dimension is stated last?

Accepted Answer

A) Height, H, of the unit 
B) Width, W, of the unit 
C) Length, L, of the unit 
A) Height, H, of the unit 
B) Width, W, of the unit 
C) Length, L, of the unit

Question 11

Portland cement plus lime (PCL)and sand are three particulate materials in mortar. In this mix, sand is three times that of PCL. Is this 3:1 relationship by weights of the materials or by their volumes?

Accepted Answer

The answer of Portland cement plus lime (PCL)and sand are...

Question 12

The flexural tensile bond strength of a masonry wall is relevant in

Accepted Answer

A) an unreinforced masonry wall subjected to gravity loads. 
B) a reinforced masonry wall subjected to lateral loads. 
C) an unreinforced masonry wall subjected to lateral loads. 
D) a reinforced masonry wall subjected to gravity loads. 
E) all of the above. 
A) an unreinforced masonry wall subjected to gravity loads. 
B) a reinforced masonry wall subjected to lateral loads. 
C) an unreinforced masonry wall subjected to lateral loads. 
D) a reinforced masonry wall subjected to gravity loads. 
E) all of the above.

Question 13

The nominal dimension of a masonry unit whose actual dimension equals 7- 5/8 in. is

Accepted Answer

A) 7 in. 
B) 7- 1/2 in. 
C) 7- 3/4 in. 
D) 7- 1/4 in. 
E) none of the above. 
A) 7 in. 
B) 7- 1/2 in. 
C) 7- 3/4 in. 
D) 7- 1/4 in. 
E) none of the above.

Question 14

Masonry mortar types are classified as

Accepted Answer

A) Types M, S, N, and O. 
B) Types I, II, III, and IV. 
C) Types 1, 2, 3, and 4. 
D) Types P, Q, R, and S. 
E) either B or C. 
A) Types M, S, N, and O. 
B) Types I, II, III, and IV. 
C) Types 1, 2, 3, and 4. 
D) Types P, Q, R, and S. 
E) either B or C.

Question 15

ASTM specifications classify masonry mortar into Type M, Type S, Type N, and Type O. The mortar can be specified based on the volume proportions of its three ingredients (Portland cement, lime, and sand)or based the mortar's strength. In which situations is strength specification used?

Accepted Answer

Strength specification yields

Question 16

Bricks that have core holes are

Accepted Answer

A) molded bricks. 
B) extruded bricks. 
C) A and B. 
A) molded bricks. 
B) extruded bricks. 
C) A and B.

Question 17

Why is concave mortar joint profile the most water- leakage resistant profile?

Accepted Answer

Because the concave joint is t

Question 18

How is mason's sand different from regular sand?

Accepted Answer

The particle size gradation of

Question 19

For a masonry wall, the compressive strength of mortar should be as high as economically feasible.

Accepted Answer

A) True 
 B)False

Question 20

A modular brick measures 4 × 2- 2/3 × 8. What are the dimensions of (i)rowlock face and (ii)soldier face?

Accepted Answer

(i)Rowlock face: 4 ×

Exam 24: Masonry Materials-I Mortar and Brick

The flexural tensile bond strength of a masonry wall is a function of

A masonry unit that has no voids (e.g., no core holes)is referred to as a

Give the ASTM classification of mortar types and their respective applications.

Retempering of mortar means

IRA is a measure of the tensile strength of a brick.

Mortar may be specified either by proportion specification or by property specification. Which of these two is more commonly used?

The term CMU is generally used as an acronym for

ASTM specifications classify masonry mortar into Type M, Type S, Type N, and Type O. What is this classification based on?

In specifying the dimensions of a masonry unit, which dimension is stated last?

Portland cement plus lime (PCL)and sand are three particulate materials in mortar. In this mix, sand is three times that of PCL. Is this 3:1 relationship by weights of the materials or by their volumes?

The flexural tensile bond strength of a masonry wall is relevant in

The nominal dimension of a masonry unit whose actual dimension equals 7- 5/8 in. is

Masonry mortar types are classified as

ASTM specifications classify masonry mortar into Type M, Type S, Type N, and Type O. The mortar can be specified based on the volume proportions of its three ingredients (Portland cement, lime, and sand)or based the mortar's strength. In which situations is strength specification used?

Bricks that have core holes are

Why is concave mortar joint profile the most water- leakage resistant profile?

How is mason's sand different from regular sand?

For a masonry wall, the compressive strength of mortar should be as high as economically feasible.

A modular brick measures 4 × 2- 2/3 × 8. What are the dimensions of (i)rowlock face and (ii)soldier face?

An Overview of the Building Delivery Process How Buildings Come Into Being

Design and Constructions Regulations

Loads on Buildings

Load Resistance the Structural Properties of Materials

Properties of the Envelope-I Thermal Properties

Properties of the Envelope-II Air and Water Vapor Control

Fire and Smoke-Related Properties

Acoustical Properties of Materials

Principles of Joints and Sealants Expansion and Contraction Control

Principles of Sustainable Construction

Soils and Excavations

Below-Grade Construction Foundation Systems and Basements

Materials for Wood Construction-I Lumber

Materials for Wood Construction-Ii Engineered Wood Products, Fasteners, and Connectors

Wood Light-Frame Construction-I

Wood Light-Frame Construction-II

Structural Insulated Panel Construction

Material Steel and Steel Components

Structural Steel Construction

Cold-Formed Steel Construction

Lime, Portland Cement, and Concrete

Concrete Construction-I Formwork, Reinforcement, and Slabs-On-Ground

Concrete Construction-II Site-Cast and Precast Concrete Framing Systems

Masonry Materials-II Concrete Masonry Units, Natural Stone, and Glass Masonry Units

Masonry and Concrete Bearing Wall Construction

Exterior Wall Cladding-I Principles of Rainwater Infiltration Control

Exterior Wall Cladding-II Masonry, Precast Concrete, and Gfrc

Exterior Wall Cladding-III Stucco, Adhered Veneer, Eifs, Natural Stone, and Insulated Metal Panels

Glass, Glazing, and Light-Transmitting Plastics

Windows and Doors

Exterior Wall Cladding-Iv Wall System in Glass

Roofing-I Low-Slope Roofs

Roofing-I Steep Roofs

Stairs

Floor Coverings

Ceilings

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