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BDCS > Amber Book Masonry > Flashcards

Amber Book Masonry Flashcards

1
Q

What is the min and max width of a cavity?

A

not less than 2” and not more than 4.5” wide

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2
Q

What are two advantages of cavity walls?

A
  1. enhances thermal insulation.

2. air space acts as a barrier against water penetration

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3
Q

What is the minimum mortar cover between ties/joint reinforcement/any exposed face?

A

5/8” minimum

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4
Q

What do pilasters do?

A

stiffen masonry walls against lateral forces and buckling and provide support for large concentrated loads

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5
Q

What is a skewback?

A

stone or masonry having a sloping face against which the end of a segmental arch rests

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6
Q

What is a voussoir?

A

wedge shaped units in a masonry arch, having side cuts converging at one of the arch centers

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7
Q

What types of joints are appropriate for exterior application?

A

tooled and troweled but not raked.

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8
Q

What is low lift grouting?

A

you only pour 4 feet at a time between wythes because there is a lot of pressure

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9
Q

What is high lift grouting?

A

pour on tall formwork (columns)

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10
Q

What are paving and fire bricks?

A

paving has superior freeze thaw resistance and lower water resistance rates
fire brick has super high fire resistance with special fire clay mortar and thinner joints

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11
Q

What are the 3 structural grades of brick?

A

SW - severe weathering, underground SNOW BRICK
MW - moderate weather resist, can be exterior - MIAMI BRICK
NW - negligible weathering - interior NTERIOR

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12
Q

What are the corners called in a brick wall?

A

leads

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13
Q

What material do you not use for lintels?

A

wood

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14
Q

What is corbeling?

A

brick overhanging

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15
Q

What is the max overhang of a brick?

A

1/2 its height

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16
Q

What is a temporary structure erected to support an arch while being constructed?

A

centering

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17
Q

What is a pilaster?

A

a column embedded in a wall for strength

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18
Q

What is a quion?

A

cut stone at the corner of a building for wall protection

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19
Q

What type of stone is most porous?

A

limestone

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20
Q

What type of stone is okay to use below grade exposed to earth?

A

granite

21
Q

What types of stones are sedimentary rock?

A

limestone and quartz

22
Q

What types of stones are most easily carved and polished?

A

marble

23
Q

What type of stone is not for use in areas with polluted air?

A

limestone and marble

24
Q

What type of stone has planes of cleavage?

A

slate

25
Q

What type of stone is often in paving?

A

quartz

26
Q

What applications are slate used for?

A

paving, roofs and wall facing

27
Q

What are the different grades of marble?

A

grade A (most uniform) to D (most faults)

28
Q

What is a stones ability to hold anchors?

A

modulus of rupture

29
Q

Are stones with higher moisture absorption weaker?

A

yes

30
Q

What stone is in river beds, strewn on fields?

A

field stone

31
Q

What stone is irregular with one exposed face?

A

rubble

32
Q

What stone is cut into rectangular shapes?

A

dimension stone

33
Q

What stone is in large slabs?

A

cut stone

34
Q

What stone is in small rectangular shapes?

A

ashlar

35
Q

What stone is regular or irregular for paving?

A

flagstone

36
Q

What is the difference between stone masonry and cladding?

A

masonry is stacked with mortar and structural while cladding is attached with anchors

37
Q

What orientation is best for weather resistance?

A

horizontal

38
Q

What are lewis pins?

A

pins embedded used for lifting stone

39
Q

What is the order of thermal resistance for these concretes? order of load bearing strength? aerated, lightweight, regular

A
  1. aerated
  2. lightweight
  3. regular
40
Q

What is the actual size of a CMU block?

A

7 5/8 x 7 5/8 x 15 5/8

41
Q

Where do you place mortar?

A

only on the face

42
Q

What is dry stacked masonry?

A

surface bonded masonry. bricks stacked without mortar and plastered on its face. level with metal/plastic ships

43
Q

What angle should a sill be?

A

8 degrees

44
Q

What are the applications of structural glazed facing tiles?

A

bathrooms and subways

45
Q

What types of cement is used for mortar?

A

only type 1, 2 and 3

46
Q

Which mortar offers higher strength and lower water permeability, masonry cement or portland cement?

A

portland cement

47
Q

What is the difference in appearance for stiff mud process vs waterstruck process?

A

stiff mud is more homogeneous and uniform vs waterstruck is more expensive but more custom/antique

48
Q

What percentage of solidness of brick is considered “solid”?

A

75% solid or greater is considered solid

49
Q

What is the min and max between wythes?

A

3/8” minimum and 4” maximum cavity

BDCS (10 decks)

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