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RAJ: Building Materials & Construction > Division 4: Masonry > Flashcards

Division 4: Masonry Flashcards

1
Q

A proportioned mixture of siliceous materials and cement which, after being prepared in a plastic state with water, hardens into a stonelike mass.

A

Mortar

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2
Q

Mortar applied to wall surface as a preparation or a hard finish coat.

A

Plaster

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3
Q

The proportioned mixture of cement, fine aggregate and water.

A

Cement mortar

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4
Q

The strength of the mortar also appears to be increased by the addition of not more than ____ of hydrated lime.

A

15%

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5
Q

For rubble stonework under ordinary conditions a mortar composed of __ parts of sand to __ part of cement.

A

4, 1

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6
Q

A three coat job Consists of a first binding coat called ______.

A

Scratch coat

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7
Q

Second straightening coat called ________.

A

Brown-coat

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8
Q

Final coat

A

Finish coat

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9
Q

Mixed with water, sand and sometimes with lime putty; used for two and three-coat finish surfaces for exterior and interior walls and ceilings.

A

Portland cement Plaster

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10
Q

Scratch, brown coats and sand float finish

A

1 cement, 1/4 lime putty, 3 sand

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11
Q

The finish coat may be smooth or hard finish or, if sand is added, called a _________.

A

Sand float finish

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12
Q

In three coat plastering work, the scratch and brown coats are __ thk at minimum; the finish coat is __ with a minimum of __ at any point

A

1/4” thk
1:8”
1/16”

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13
Q

Thickness of plaster coats depends on the _______ to which the plaster is plaster is applied.

A

Type of material

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14
Q

Plaster of Paris mixed with clay, lime and other materials in combinations covered by trademarks or patents.

A

Gypsum Plaster

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15
Q

Same as gypsum plaster but mixed to meet established standards.

A

High-strength gypsum plaster

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16
Q

Gypsum plaster premixed with fibers

A

Fibered gypsum plaster

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17
Q

Gypsum plaster mixed with fine white sand.

A

Prepared gypsum plaster

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18
Q

Gypsum plaster mixed with ingredients develops more adhesive strength

A

Bonding plaster

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19
Q

Gypsum plaster mixed on the job with water or other suitable mineral aggregate.

A

Lightweight gypsum plaster or fire resistant plaster

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20
Q

Plaster of paris mixed with alum or borax or other materials

A

Keene’s cement

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21
Q

For ornamental plaster work and carvings

A

Plaster of Paris

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22
Q

For ornamental plaster work and castings.

A

Molding Plaster

23
Q

Gypsum plaster mixed with other ingredients to develop small air throughout the plaster in combinations covered by trademarks or patents.

A

Acoustic plaster

24
Q

A highly decorative type of plaster work developed in Italy

A

Sgraffito

25
Q

A built up construction or combination of building materials as clay, concrete, or stone set in mortar or plain concrete.

A

Masonry

26
Q

The horizontal surfaces on which the stones or bricks of walls lie in the courses.

A

Bed

27
Q

A continous layer of bricks, stones or other masonry units.

A

Course

28
Q

Each continuous, vertical section of the wall, one masonry unit thick.

A

Wythe or Tier

29
Q

The horizontal surfaces on which the stones or bricks of walls lie in the courses

A

Bed

30
Q

A continuous layer of bricks, stones or other masonry units

A

Course

31
Q

Each continuous, vertical section of the wall, one masonry unit thick.

A

Wythe or Tier

32
Q

That connection between bricks, stones or other masonry units formed by lapping them one upon another carrying up the work

A

Bond

33
Q

A brick or block masonry laid lengthwise of a wall

A

Stretcher

34
Q

A brick or block masonry extending over the thickness of the wall

A

Header

35
Q

A unit laid on its end with its face perpendicular to the face of the wall.

A

Soldier

36
Q

The corner stones at the angles of buildings

A

Quoins

37
Q

Masonry of rough, undressed stones.

A

Rubble work

38
Q

When the roughest irregularities are knocked off.

A

Scabbled rubble

39
Q

When the stones in each course are rudely dressed to a nearly uniform height

A

Range rubble

40
Q

Uniform courses with stones uniform in size.

A

Coursed ashlar/ Ranged work

41
Q

Course laid with the horizontal joints uninterrupted but the width of the course and the length of the stones are varied to produce a wall with a less regular pattern.

A

Broken Range Ashlar

42
Q

The course retain their rectangular shape and are laid on horizontal beds but no effort is made to continue the horizontal beds in an uninterrupted manner.

A

random course ashlar

43
Q

Courses of stone face of which is jagged picked so as to present a rough surface

A

Rustic or Rock work

44
Q

when the heavier stones or areas of stone project from the normal face of the surrounding wall or of the joint themselves.

A

Rustification

45
Q

Structural units of clay or shale formed while plastic and subsequently fired.

A

Bricks

46
Q

Standard size of brick

A

3 3/4” x 2 1/4” x 8”

47
Q

Specially processed to give certain surface characteristics. Used for exposed masonry surfaces

A

Facing brick

48
Q

These have a smooth outer surface with a dull satin or high gloss finish. They are load bearing, fire resisting and impervious.

A

Glazed brick

49
Q

Ordinarily made from a mixture of flint clay and plastic clay used for the liming of furnaces, fireplaces and chimneys

A

Fire (refractory) brick

50
Q

Reinforcements for 100mm and 150mm CHB

A

3/8” diameter ver. Bars @ 600mm center

3/8” diameter hor. Bars every third course

51
Q

Reinforcement bars for 8” walls

A

1/2” ver. bars at 24” on centers

1/2” hor. Bars every third course

52
Q

Lightweight block made from fiber and cement

A

Durisol

53
Q

It is used fir lightweight, fire resistant interior partitions. Also called gypsum partition board

A

Plaster block

RAJ: Building Materials & Construction (4 decks)

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