Modern Masonry

Question 1

Sled runner jointer used for?

Answer 1

6. Long Horizontal Joints.

Question 2

Type of brick used in areas exposed to freezing but not wet conditions.

Answer 2

82. MW (Moderate Weather).

Question 3

Unit of measure in a modular gird system is ____?

Answer 3

85. 4”

Question 4

A standard modular brick is _____________?

Answer 4

86. 4” x 2-2/3” x 8”.

Question 5

A stacked bond is _____________?

Answer 5

97. Verticle Joints Align.

Question 6

Considered the weakest bond?

Answer 6

97. Stacked.

Question 7

White powerd that appears after exposure to mositure in a masonry wall is _____________?

Answer 7

92. Efflorescence.

Question 8

Recommended mortar joints in areas that are exposed to heavy rains and high winds: ______?

Answer 8

99. Concave.

Question 9

CMU with the least pounds per cubic foot of concrete: _________?

Answer 9

119. Expanded Shale.

Question 10

Highest compressive strenght aggregate in an 8x8x16 CMU?

Answer 10

119. Sand and Gravel.

Question 11

When figuring nominal dimensions, what is the intended size of the mortar joint for concrete masonry units?

Answer 11

122. 3/8”

Question 12

An advantage of a two core block design versus a three core block design is?

Answer 12

125. Lighter, reduced heat conductor, and more space for conduit.

Question 13

To prevent mositure from entering the top of the masonry wall, sure stone___________?

Answer 13

144. Copings.

Question 14

Best type stone to protect against moisture on sills:

Answer 14

143. Limestone.

Question 15

Types of lime used in mortar?

Answer 15

148. Type “S”.

Question 16

Type of mortar best suited for use below grade?

Answer 16

153. Type “M”

Question 17

To avoid hardening due to hydration, mortar, should be used within what time span after mixing?

Answer 17

152. 2 1/2 hours.

Question 18

Add to mortar for strenght?

Answer 18

152. Cement.

Question 19

Most typically the significant property of hardened mortar?

Answer 19

152. Bond Strenght.

Question 20

Type “K” mortar is used when?

Answer 20

153. Interior non-load bearing partitions where hgih-strenght is not necessary.

Question 21

Type of mortar to be used for cavity walls when the wind speeds reach 80 mph.

Answer 21

154. Type “S”

Question 22

CF of mortar REQUIRED for a single wythe brick wall that is 200 suare feet, has 3/8” joints and 655 non-modular brick units per 100 square feet.

Answer 22

159. 11.6 CF

Question 23

Masonry walls that interset may be connected by?

Answer 23

173. Strap Anchors.

Question 24

Method of cutting brick most frequently used when the cut edge will be hidden by the mortar?

Answer 24

182. Brick Hammer (not trowel).

Question 25

When laying a brick wall, the leads are?

Answer 25

187. Corners

Question 26

Recommended sandblast pressure to use with a 1/4" nozzle when sandblasting brick?

Answer 26

210. 60-120 psi

Question 27

Best cleaning agent for brick?

Answer 27

208. Hydrochloric or muriatic Acid for new masonry construciton.

Question 28

Type of concrete block most common for the use with reinforcement?

Answer 28

216. Two core blocks.