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CSLB Trade > Drywall and Plaster > Flashcards

Drywall and Plaster Flashcards

1
Q

What penetration are face layer sheetrock fastners, GWB-54, required by code to provide?

A

3/4”

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2
Q

what causes cracking or wrinkling at taped edges of drywall?

A

Very rapid drying

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3
Q

where should the first nails be spaced in the double nailing method for attaching sheetrock board to wood framing

A

12” OC along the supports in the field of the shootrock

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4
Q

what type of lath is used as the plaster base, when plastering ceilings in garages?

A

metal

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5
Q

three coat work requires

A

a finish coat
a brown coat
a scrath

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6
Q

for what period of time must the scratch coat be cured?

A

not less than 48 hours

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7
Q

how is chicken wire ordered

A

by the roll

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8
Q

the lath used for a plaster finish is

A

metal
gypsum
insulating fiberboard

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9
Q

which of the following has the greatest insulating value

A

insulating fiberboard

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10
Q

stucco adheres best to which of the following

A

wire lath

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11
Q

over which types of bases may portland cement plaster be applied

A

wire
masonry

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12
Q

gypsum is what type of lath

A

mineral lath

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13
Q

gypsum mortar sets

A

faster than lime mortar

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14
Q

metal lath is usually applied with the long dimension of the sheet in a

A

horizonatl direction

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15
Q

what is the principle binder in gypsum products

A

lime

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16
Q

metal lath is ordered by the bundle. How many peices are in a bundle

A

12

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17
Q

what is an advantage of plaster acoustical ceilings over other acoustical ceilings?

A

its fire resistance

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18
Q

which are teh best nails for drywall

A

annular ring

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19
Q

how many pounds of nails should be ordered if you need 2500 for a job plus a 10% allowance, if the nails come 150 to the pound

A

19

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20
Q

the nails should be placed no more than how far on center, when installing drywall on a ceiling

A

7”

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21
Q

the nails should be placed no more than how far on center, when installing drywall on sidewalls

A

8”

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22
Q

what does the term drywall most usually refer to

A

gypsum wall board

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23
Q

ridging refers to

A

conspicouls wrinkling of joint tape and treated joints

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24
Q

usually drywall shuld first be installed

A

on the ceilings

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25
Q

what is the recommended head diameter for drywall nails

A

19/64”

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26
Q

which of the following statements is false

A

in perpendicular installation, the short side of the drywall is attached perpendicular to the studs

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27
Q

Which of the followign is the best hammer for drywall

A

concave

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28
Q

how do you get a clean cut on drywall

A

first score the front

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29
Q

what is the most important advantage of installing drywall with screws

A

it holds more securely

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30
Q

the panels should be applied within how many minutes of the application of the adhesive nail on application

A

15

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31
Q

what are the two basic nailing patterns in general use for drywall

A

single and double

32
Q

what is the basic cause of nail pops

A

wood shrinkage

33
Q

before the first coat of drywall compound is applied, the entire installation must be checked for

A

defective joints
loose boards
poorly driven nails

34
Q

what will a skim coat of tape compound help prevent happening to drywall taped edges

A

cracking

35
Q

joints in wallboard should be

A

loosely butted together

36
Q

what are the 3 stucco coats

A

scratch
brown
finish

37
Q

the term portalnd cement plaster applies to

A

stucco

38
Q

stucco work is estimated by what unit of measure

A

square yard

39
Q

when ceramic tile more than 3/8 inch thick is applied over water resistant gypsum board, fasten the board with screws or nails spaced not more than

A

4 inches oc

40
Q

slightly crooked ceiling joists are sometimes straightened by the use of a

A

strong back

41
Q

When the wall is greater than ____ gypsum board is installed vertically

A

8’1”

42
Q

what are the most popular standard gypsum board lenths

A

8,10,12 and 16 feet

43
Q

when fastening drywall, minimum penetration of ring shanked nails into the framing member is

A

3/4 inch

44
Q

when applying the paper covered edge of water resistant gypsum board, it should be not less than ____ inch above the lip of the tub or shower pan

A

1/4

45
Q

joints in the face layer of a multilayer application are offset from joints in the base layer by at least

A

10 inches

46
Q

what is the width of standard gypsum board

A

48 inches

47
Q

nails are spaced a maximum of ____ in the single nailing method

A

8 inches OC on walls, 7 inches OC on ceiling

48
Q

screws are spaced

A

16 inch OC on walls, 12 inches OC on ceilings

49
Q

how many inches should weep screed be placed above the earth

A

6

50
Q

wood supports for drywall shall not be less than ____ inches nominal in the least dimension

A

2

51
Q

how many days should there be between scratch and brown coat, when applying partland cement plaster

A

2

52
Q

how many inches oc should the maximum spacing of supports for NO17 gauge woven wire fabric lath on vertical hollow metal studs

A

16

53
Q

when installing a suspended ceiling you should first

A

make a drawing of the ceiling

54
Q

when locating joists above an existing ceiling, you should

A

use a hammer to tap on the ceiling until you hear a dull thud

55
Q

if you have a wall with studs spaced 16 inches on center with a 1/2 inch thick drywall installed parallel to the studs, the nailing should be ____ nails spaced 2 to 2-1/2 inches apart with pairs spaced 12 inches apart except at the perimeter of the sheet

A

2

56
Q

interior metal lath shall be lapped not less than ____ inches at the sides and 1 inch at the ends

A

1/2

57
Q

metal stud or wood frame construction with a slab on grade floor shall have exterior plaster applied so that it does not extend below the

A

lath and paper

58
Q

hangers supporting a 16 sq ft area of a suspended ceiling that weighs 5 pounds per sq ft shall be No. ____ guage wire

A

8

59
Q

staples used to fasten the base ply of a two ply drywall installation shall be

A

No 16 guage

60
Q

which of the following measurements should be used when squaring a room

A

3,4 and 5 feet

61
Q

how many inches thick should the finish coat of interior plaster be

A

1/16

62
Q

suspension wire is used to hand____ in suspended ceiling

A

main runners

63
Q

what are the most common sizes in inches of ceiling tile

A

12x12 and 12x24

64
Q

when fastening 12” x 12” tiles you must use

A

4 staples

65
Q

the minimum length of a screw used to fasten the face layer of a double 5/8 inch thick drywall assembly on wood framing shall not be less than ____ inches long

A

1-7/8

66
Q

Screws used for attaching 3/8 inch metal rib lath shall penetrate wood framing not less than

A

5/8

67
Q

nails used for fastening furring to ceiling joists must penetrate into the joists at least

A

1 inch

68
Q

gypsum wall board shall not be installed

A

without weather protection

69
Q

what is the width in inches of border tiles for a room measuring 14’9” x 22’-3”

A

10-1/2 and 7-1/2

70
Q

what is the width in inches of 24” x 24” border tiles for a room measuring 12’6” x 18’8”

A

15 and 16

71
Q

Rebound material from gunite may be reused as sand in an amount not greater than what percent of the total sand in an batch

A

25

72
Q

how many inches thick should gypsum plaster be when measuring from the back plane of expanded metal lath

A

7/8

73
Q

how many inches OC should the face layer be nailed when two layers of 5/8 inch thick gypsum wallboard are attached parallel to joist spaced 24 inches OC

A

This is not allowed

74
Q

how many inches in nominal thickness in the least dimension should suspended wood systems be, with the exception of furring strips not less than 1 inch that may be used over solid backing

A

2

75
Q

how many days should there be between the second and finish coat, when applying exterior portland cement plaster

A

7

76
Q

what is the minimum inches that the overall thickness of exposed aggregate plaster should be

A

7/8

77
Q

when attaching 1/2 inch thick gypsum board to wood framing in single layer installations, how many inches should long screws be

A

1-1/8

CSLB Trade (22 decks)

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