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NASCALA > Modern Masonry > Flashcards

Modern Masonry Flashcards

1
Q

Sled runner jointer used for?

A
  1. Long Horizontal Joints.
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2
Q

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

A
  1. MW (Moderate Weather).
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3
Q

Unit of measure in a modular gird system is ____?

A
  1. 4”
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4
Q

A standard modular brick is _____________?

A
  1. 4” x 2-2/3” x 8”.
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5
Q

A stacked bond is _____________?

A
  1. Verticle Joints Align.
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6
Q

Considered the weakest bond?

A
  1. Stacked.
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7
Q

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

A
  1. Efflorescence.
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8
Q

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

A
  1. Concave.
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9
Q

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

A
  1. Expanded Shale.
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10
Q

Highest compressive strenght aggregate in an 8x8x16 CMU?

A
  1. Sand and Gravel.
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11
Q

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

A
  1. 3/8”
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12
Q

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

A
  1. Lighter, reduced heat conductor, and more space for conduit.
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13
Q

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

A
  1. Copings.
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14
Q

Best type stone to protect against moisture on sills:

A
  1. Limestone.
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15
Q

Types of lime used in mortar?

A
  1. Type “S”.
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16
Q

Type of mortar best suited for use below grade?

A
  1. Type “M”
17
Q

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

A
  1. 2 1/2 hours.
18
Q

Add to mortar for strenght?

A
  1. Cement.
19
Q

Most typically the significant property of hardened mortar?

A
  1. Bond Strenght.
20
Q

Type “K” mortar is used when?

A
  1. Interior non-load bearing partitions where hgih-strenght is not necessary.
21
Q

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

A
  1. Type “S”
22
Q

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.

A
  1. 11.6 CF
23
Q

Masonry walls that interset may be connected by?

A
  1. Strap Anchors.
24
Q

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

A
  1. Brick Hammer (not trowel).
25
Q

When laying a brick wall, the leads are?

A
  1. Corners
26
Q

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

A
  1. 60-120 psi
27
Q

Best cleaning agent for brick?

A
  1. Hydrochloric or muriatic Acid for new masonry construciton.
28
Q

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

A
  1. Two core blocks.

NASCALA (24 decks)

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