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Fire: Departmental Bulletins 2 > Bk 29: Building Construction Questions > Flashcards

Bk 29: Building Construction Questions Flashcards

1
Q

Gable rafters are:
__x__
___ to ___ on center.

A

2x6

16 to 24 inches on center

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2
Q

GABLE roofs may have a:
__x__ ridge board
or TWO __x__’s butted together.

A

1x6 ridge board

2x6s butted together

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3
Q

What guage truss clips may be nailed to the bottom of every __ to __ trusses, on METAL GUSSET ROOFs?

A

18 gauge

every 3 to 5 trusses

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4
Q

HIP Roof ridge board and rafters are usually what size or larger?

A

2x6 or larger

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5
Q

What size are BRIDGE TRUSS members?

A

2x12

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6
Q

what size are BOWSTRING ARCH TRUSS members? 2 sizes

A

2x12 or 2x14

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7
Q

What size is the wood framing on a LAMELLA ARCH Roof?

A

2x12

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8
Q

Total roof collapse on a LAMELLA may occur if what % of the roof is removed?

A

20%

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9
Q

What diameter are TIE RODs on a TIED TRUSS ARCH Roof?

A

5/8” diameter

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10
Q

What size are TIED TRUSS ARCH truss members?

A

2x12 or larger

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11
Q

What size are TIED TRUSS ARCH rafters?

A

2x10

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12
Q

What size are the rafters on a SAWTOOTH?

A

2x8

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13
Q

What size is the STEM of a WOODEN I BEAM?

A

3/8”

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14
Q

Nailing Blocks are spaced how many feet apart on a WOODEN I BEAM Roof?

A

4 ft.

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15
Q

OPEN WEB ROOFs can span how many feet?

A

70 feet.

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16
Q

What is the penetration of the prongs of 18 gauge Steel Metal Gusset Plates?

A

3/8”

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17
Q

What is the spacing of LAM BEAMs on Panelized Roof?

A

12 to 40 ft.

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18
Q

What is the size of Laminated BEAMs on a Panelized Roof?

A

6x36

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19
Q

LAM BEAMs may be bolted together and provide lengths in excess of how many feet?

A

100 ft.

20
Q

What is the common size of PURLINs?

A

4x12

21
Q

What is the size of JOISTs on a Panelized Roof?

A

2x4

22
Q

What is the thickness of the decking on a Panelized Roof?

A

1/2” plywood

23
Q

Beam span supports of __ inch HOLLOW STEEL PIPE may be found on Panelized Roofs.

A

4 in

24
Q

Steel begins to lose it’s strength at what temperature?

A

1,000 degrees

25
Q

How thick are PRE-33 exterior walls?

A

about 13 inches

26
Q

How far above the roofline are PRE-33 parapet walls? How tall if used for a facade?

A

3 ft

5 ft. for facade

27
Q

At least how thick are POST-33 exterior walls?

A

9 in.

28
Q

How thick is the BOND BEAM cap on lowered parapet walls over Public Ways and Exits?

A

4 - 6 inches

29
Q

Parapet Walls shall NOT be higher than how many inches on URM Buildings?

A

16 in.

30
Q

Rafter Tie Plates are installed every ____ ft. and attached to the roof rafter.

A

4 ft.

31
Q

Window frames are “set” to the inside of the wall, exposing approx. ___ inches of brick on URM buildings.

A

8 in.

32
Q

This type of construction can be classified as an “old type” of lightweight construction.

A

Bungalow Construction

33
Q

What size are the studs and rafters in BUNGALOW construction?

A

Rough Cut 2x3 or 2x4

34
Q

What size is the ridge board in BUNGALOW construction?

A

1 x 6

35
Q

OPEN WEB BAR JOIST:

Joists are spaced ___ ft. apart to accept ________ _______ decking.

A

8 ft.

corrugated metal

36
Q

OPEN WEB BAR JOIST:

Top and Bottom chords are made of ___ in. steel?

A

1/8”

37
Q

OPEN WEB BAR JOIST:

Web supports are made of solid ___ in. steel bar?

A

5/8”

38
Q

Tilt Up construction can be up to how many stories in height?

A

5 stories

39
Q

KING’s ROW is every ___ to ___ row of bricks?

A

4 to 7

40
Q

Rafter Size:

Sawtooth: ___x___

Tied Truss Arch: ___x___

A

Sawtooth: 2 x 8

Tied Truss Arch: 2 x 10

41
Q

Truss Size:

Lamella: ___x___

Bridge Truss: ___x____

Tied Truss Arch: ___x___

A

Lamella: 2 x 12 truss

Bridge Truss: 2 x 12 truss

Tied Truss Arch: 2 x 12 truss or larger

42
Q

Robertson Decking:

____ __________ mixture of _____, cement, and occasionally ____ ______ pumped on top of corrugated metal decking ___ x ___ in. or ___ x ___ in. Wire Mesh to a thickness of ___ to ____ inches.

A

Air entrained mixture of sand, cement, and occasionally pea gravel.

4 x 4 in. or 6 x 6 in.

3 to 4 in.

43
Q

Mill and Timber structural members may be ___x___ inches for strength

A

8 x 8 in.

44
Q

What size are the Rafters on a Bridge Truss?

A

2 x 6 in.

45
Q

What size is the Top Truss of a OPEN WEB roof?

A

2 x 3

46
Q

When exposed to sufficient heat, Metal Beams can EXPAND ____ inches per 100 ft.

A

9 in.

Fire: Departmental Bulletins 2 (17 decks)

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