Chapter 8

Question 1

Which type of load bearing masonry wall will the firefighter most likely encounter

Answer 1

Concrete block

Question 2

Which type of support is used only where architectural style makes it attractive

Answer 2

corbelling

Question 3

What is the hardness of the brick dependent upon

Answer 3

Soil

Question 4

Which is a beam over an opening in a masonry wall

Answer 4

Lintel

Question 5

Which type of stone is NOT commonly used in stone masonry construction

Answer 5

Clay

Question 6

What shape section above the lintel is it assumed will need to be supported by the lintel

Answer 6

Triangle

Question 7

Which type of wall is built to prevent water seepage through the mortar joints to the interior of the building

Answer 7

Cavity wall

Question 8

Which of the following is one of the oldest and simplest building materials

Answer 8

Masonry

Question 9

How many layers of 1 inch (25 mm) matched boards are required in nonbearing interior partitions and walls of mill construction as a minimum

Answer 9

Two

Question 10

What is the required fire resistance rating of exterior walls in heavy timber construction

Answer 10

2 hour

Question 11

What is used to allow the beam to fall away freely from a wall in the case of structural collapse without pushing against the masonry

Answer 11

Fire cut

Question 12

What would the allowable compressive strength of brick masonry be

Answer 12

250 psi (1.72 kPa)

Question 13

Which direction should firefighters assume the collapsing masonry wall will fall

Answer 13

Outward

Question 14

Where should corrosion-resistant metal ties be placed to accomplish horizontal bonding in a masonry wall

Answer 14

Between the wythes

Question 15

What is usually the maximum height allowed for non reinforced masonry walls

Answer 15

six stories

Question 16

What causes cracks and misalignment of masonry wall

Answer 16

shifting foundation

Question 17

What must be done to the masonry wall as the height of the wall increases

Answer 17

Increase the thickness at the base

Question 18

What may be used to reduce the compressive stresses in the masonry when a beam transmits a large vertical load

Answer 18

pilaster

Question 19

Which determines the fire resistance of a masonry wall

Answer 19

Type of units used and thickness of the wall

Question 20

Which is the traditional and most basic masonry structure

Answer 20

Exterior load bearing wall

Question 21

What is a major advantage of mill construction from a fire fighting standpoint

Answer 21

No concealed spaces

Question 22

Which part of the mortar serves as the bonding agent

Answer 22

Portland cement

Question 23

Which is a low wall at the edge of the roof

Answer 23

parapet

Question 24

How high will three courses of brick plus the intervening mortar joints be when completed

Answer 24

8 inches

Question 25

Which is usually identifiable from the exterior of the building when a leaning or bulging masonry wall is repaired

Answer 25

Bearing plate

Question 26

How often can a header course be placed to bond parallel wither of brick

Answer 26

Every sixth course

Question 27

Which type of strength does a masonry unit have

Answer 27

Compressive

Question 28

Which type of construction are buildings of ordinary construction with masonry exterior walls and wood joisted interior framing

Answer 28

Type 3

Question 29

What usually collapses and results in the masonry wall collapsing

Answer 29

Interior wood framing

Question 30

Which type of fascia creates a projection beyond the building wall that creates a concealed space through which a fire can communicate

Answer 30

Mansard

Question 31

Which of the following can cause deterioration of a masonry structure

Answer 31

mortar breakdown