Question 1

Jack arches can be built only over tapered or sawn brick.

Accepted Answer

A) True 
 B)False

Question 2

A _____ does a nice job of pointing the jack arch.

Accepted Answer

A)   small trowel
B)   beader
C)   slicker
D)   rakeE) B) and D)
F) B) and C) C

Question 3

A _____ jack arch is composed of only one full brick in height and laid in a soldier position.

Accepted Answer

A)   common
B)   soldier
C)   single
D)   bondedE) A) and B)
F) None of the above

Question 4

A jack arch is a flat arch capable of supporting a load imposed on it over an opening.

Accepted Answer

A) True 
 B)False  True

Question 5

A jack arch that is built correctly gives the appearance of sagging in the center.

Accepted Answer

A) True 
 B)False  True

Question 6

When laying the jack arch, the mortar should be mixed stiff enough that it does not squeeze out when laid, except with abundant tapping on the brick.

Accepted Answer

A) True 
 B)False

Question 7

It is recommended that the thickness of mortar joints between arch brick be a _____ .

Accepted Answer

A)   minimum of ¼"
B)   maximum of ¼"
C)   minimum of ½"
D)   maximum of ½"E) A) and D)
F) A) and C)

Question 8

The accepted rule for determining the angle of a jack arch states that "the skewback angle should be _____ of span of the opening for each 4" of arch depth."

Accepted Answer

A)   ¾' per yard
B)   ½' per yard
C)   ¾" per foot
D)   ½" per footE) A) and B)
F) None of the above

Question 9

A jack arch is supported on steel angle irons if the opening is _____ long.

Accepted Answer

A)   less than 2'
B)   more than 2'
C)   between 1' and 2'
D)   more than 1'E) All of the above
F) A) and D)

Question 10

Skewbacks are either cut with a sharp brick chisel or cut with the brick saw for accuracy.

Accepted Answer

A) True 
 B)False

Exam 38: Construction of a Jack Arch

Jack arches can be built only over tapered or sawn brick.

Correct Answer
verified

A _____ does a nice job of pointing the jack arch.

Correct Answer
verified
C

A _____ jack arch is composed of only one full brick in height and laid in a soldier position.

Correct Answer
verified

A jack arch is a flat arch capable of supporting a load imposed on it over an opening.

Correct Answer
verified
True

A jack arch that is built correctly gives the appearance of sagging in the center.

Correct Answer
verified
True

When laying the jack arch, the mortar should be mixed stiff enough that it does not squeeze out when laid, except with abundant tapping on the brick.

Correct Answer
verified

It is recommended that the thickness of mortar joints between arch brick be a _____ .

Correct Answer
verified

The accepted rule for determining the angle of a jack arch states that "the skewback angle should be _____ of span of the opening for each 4" of arch depth."

Correct Answer
verified

A jack arch is supported on steel angle irons if the opening is _____ long.

Correct Answer
verified

Skewbacks are either cut with a sharp brick chisel or cut with the brick saw for accuracy.

Correct Answer
verified

Exam 38: Construction of a Jack Arch

Jack arches can be built only over tapered or sawn brick.

Correct AnswerverifiedShow Answer

A _____ does a nice job of pointing the jack arch.

Correct AnswerverifiedC

A _____ jack arch is composed of only one full brick in height and laid in a soldier position.

Correct AnswerverifiedShow Answer

A jack arch is a flat arch capable of supporting a load imposed on it over an opening.

Correct AnswerverifiedTrue

A jack arch that is built correctly gives the appearance of sagging in the center.

Correct AnswerverifiedTrue

When laying the jack arch, the mortar should be mixed stiff enough that it does not squeeze out when laid, except with abundant tapping on the brick.

Correct AnswerverifiedShow Answer

It is recommended that the thickness of mortar joints between arch brick be a _____ .

Correct AnswerverifiedShow Answer

The accepted rule for determining the angle of a jack arch states that "the skewback angle should be _____ of span of the opening for each 4" of arch depth."

Correct AnswerverifiedShow Answer

A jack arch is supported on steel angle irons if the opening is _____ long.

Correct AnswerverifiedShow Answer

Skewbacks are either cut with a sharp brick chisel or cut with the brick saw for accuracy.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
verified
True

Correct Answer
verified
True

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified