Question 1

Retempering of mortar, if needed, should be generally done within

Accepted Answer

A) 1 h of the initial preparation of mortar. 
B) 4 h of the initial preparation of mortar. 
C) 2- 1/2 h of the initial preparation of mortar. 
D) 5- 1/2 h of the initial preparation of mortar. 
E) none of the above. 
A) 1 h of the initial preparation of mortar. 
B) 4 h of the initial preparation of mortar. 
C) 2- 1/2 h of the initial preparation of mortar. 
D) 5- 1/2 h of the initial preparation of mortar. 
E) none of the above.

Question 2

When mortar is specified using proportion specification, various solid materials that constitute masonry mortar are proportioned based on their

Accepted Answer

A) wet weights. 
B) dry volumes. 
C) wet volumes. 
D) dry weights. 
E) none of the above. 
A) wet weights. 
B) dry volumes. 
C) wet volumes. 
D) dry weights. 
E) none of the above.

Question 3

Using sketches and notes, describe various commonly used mortar joint profiles. Which profile gives the most watertight wall and why?

Accepted Answer

Mortar joint profiles are an important a

Question 4

The cementitious material(s)in contemporary masonry mortar consist(s)of

Accepted Answer

A) Portland cement. 
B) lime. 
C) Portland cement, lime, and sand. 
D) Portland cement and lime. 
E) Portland cement and sand. 
A) Portland cement. 
B) lime. 
C) Portland cement, lime, and sand. 
D) Portland cement and lime. 
E) Portland cement and sand.

Question 5

A wall made of Portland cement mortar (without lime)is more watertight than a wall made of Portland cement and lime mortar.

Accepted Answer

A) True 
 B)False

Question 6

Explain why the masonry industry recommends the use of the weakest mortar that will give the required performance.

Accepted Answer

The masonry industry recommends the use

Question 7

The most commonly used mortar joint thickness is

Accepted Answer

A) 1/2 in. 
B) 3/4 in. 
C) 3/8 in. 
D) 5/8 in. 
E) 1/4 in. 
A) 1/2 in. 
B) 3/4 in. 
C) 3/8 in. 
D) 5/8 in. 
E) 1/4 in.

Question 8

The primary reason for providing core holes in bricks is to

Accepted Answer

A) increase the shear resistance of masonry walls. 
B) reduce the weight of bricks. 
C) provide uniform drying and firing of bricks. 
D) none of the above. 
A) increase the shear resistance of masonry walls. 
B) reduce the weight of bricks. 
C) provide uniform drying and firing of bricks. 
D) none of the above.

Question 9

How can the spalling of masonry be prevented?

Accepted Answer

By using high- strength masonr

Question 10

ASTM specifications classify masonry mortar into Type M, Type S, Type N, and Type O. Which of these types is recommended for use in brick veneer cladding in a: (i)highly seismic region and (ii)nonseismic region?

Accepted Answer

(i)Type S in a highl

Question 11

Does efflorescence in a brick wall reduce the wall's strength?

Accepted Answer

No, it is

Question 12

ASTM specifications classify masonry mortar into Type M, Type S, Type N, and Type O. Which is the strongest type and which is the weakest type?

Accepted Answer

Type M is the strong

Question 13

How can efflorescence on brick walls be removed?

Accepted Answer

By washing

Question 14

Bricks may carry a grade of SW, MW, or NW. Which factors determine the grade?

Accepted Answer

The grade of bricks is determined by sev

Question 15

The mortar commonly recommended for use in masonry walls in seismic regions is

Accepted Answer

A) Type N. 
B) Type I. 
C) Type S. 
D) Type II. 
E) Type P. 
A) Type N. 
B) Type I. 
C) Type S. 
D) Type II. 
E) Type P.

Question 16

A brick has three dimensions: length, width, and height. In specifying the brick dimensions, which dimension is stated first, which next, and which is stated last?

Accepted Answer

Through- the- wall d

Question 17

A preblended cementitious mix for masonry mortar is available as

Accepted Answer

A) PCL cement. 
B) mortar cement. 
C) masonry cement. 
D) A and B. 
E) B and C. 
A) PCL cement. 
B) mortar cement. 
C) masonry cement. 
D) A and B. 
E) B and C.

Question 18

Bricks that are highly absorptive may need to be wetted before being laid in the wall.

Accepted Answer

A) True 
 B)False

Question 19

What is a brick without core holes referred to in the masonry industry-as solid brick or core- less brick?

Accepted Answer

Neither of the two.

Question 20

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

Accepted Answer

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

Exam 24: Masonry Materials-I Mortar and Brick

Retempering of mortar, if needed, should be generally done within

When mortar is specified using proportion specification, various solid materials that constitute masonry mortar are proportioned based on their

Using sketches and notes, describe various commonly used mortar joint profiles. Which profile gives the most watertight wall and why?

The cementitious material(s)in contemporary masonry mortar consist(s)of

A wall made of Portland cement mortar (without lime)is more watertight than a wall made of Portland cement and lime mortar.

Explain why the masonry industry recommends the use of the weakest mortar that will give the required performance.

The most commonly used mortar joint thickness is

The primary reason for providing core holes in bricks is to

How can the spalling of masonry be prevented?

ASTM specifications classify masonry mortar into Type M, Type S, Type N, and Type O. Which of these types is recommended for use in brick veneer cladding in a: (i)highly seismic region and (ii)nonseismic region?

Does efflorescence in a brick wall reduce the wall's strength?

ASTM specifications classify masonry mortar into Type M, Type S, Type N, and Type O. Which is the strongest type and which is the weakest type?

How can efflorescence on brick walls be removed?

Bricks may carry a grade of SW, MW, or NW. Which factors determine the grade?

The mortar commonly recommended for use in masonry walls in seismic regions is

A brick has three dimensions: length, width, and height. In specifying the brick dimensions, which dimension is stated first, which next, and which is stated last?

A preblended cementitious mix for masonry mortar is available as

Bricks that are highly absorptive may need to be wetted before being laid in the wall.

What is a brick without core holes referred to in the masonry industry-as solid brick or core- less brick?

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

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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