Bk 29: Building Construction Questions Flashcards
Gable rafters are:
__x__
___ to ___ on center.
2x6
16 to 24 inches on center
GABLE roofs may have a:
__x__ ridge board
or TWO __x__’s butted together.
1x6 ridge board
2x6s butted together
What guage truss clips may be nailed to the bottom of every __ to __ trusses, on METAL GUSSET ROOFs?
18 gauge
every 3 to 5 trusses
HIP Roof ridge board and rafters are usually what size or larger?
2x6 or larger
What size are BRIDGE TRUSS members?
2x12
what size are BOWSTRING ARCH TRUSS members? 2 sizes
2x12 or 2x14
What size is the wood framing on a LAMELLA ARCH Roof?
2x12
Total roof collapse on a LAMELLA may occur if what % of the roof is removed?
20%
What diameter are TIE RODs on a TIED TRUSS ARCH Roof?
5/8” diameter
What size are TIED TRUSS ARCH truss members?
2x12 or larger
What size are TIED TRUSS ARCH rafters?
2x10
What size are the rafters on a SAWTOOTH?
2x8
What size is the STEM of a WOODEN I BEAM?
3/8”
Nailing Blocks are spaced how many feet apart on a WOODEN I BEAM Roof?
4 ft.
OPEN WEB ROOFs can span how many feet?
70 feet.
What is the penetration of the prongs of 18 gauge Steel Metal Gusset Plates?
3/8”
What is the spacing of LAM BEAMs on Panelized Roof?
12 to 40 ft.
What is the size of Laminated BEAMs on a Panelized Roof?
6x36
LAM BEAMs may be bolted together and provide lengths in excess of how many feet?
100 ft.
What is the common size of PURLINs?
4x12
What is the size of JOISTs on a Panelized Roof?
2x4
What is the thickness of the decking on a Panelized Roof?
1/2” plywood
Beam span supports of __ inch HOLLOW STEEL PIPE may be found on Panelized Roofs.
4 in
Steel begins to lose it’s strength at what temperature?
1,000 degrees
How thick are PRE-33 exterior walls?
about 13 inches
How far above the roofline are PRE-33 parapet walls? How tall if used for a facade?
3 ft
5 ft. for facade
At least how thick are POST-33 exterior walls?
9 in.
How thick is the BOND BEAM cap on lowered parapet walls over Public Ways and Exits?
4 - 6 inches
Parapet Walls shall NOT be higher than how many inches on URM Buildings?
16 in.
Rafter Tie Plates are installed every ____ ft. and attached to the roof rafter.
4 ft.
Window frames are “set” to the inside of the wall, exposing approx. ___ inches of brick on URM buildings.
8 in.
This type of construction can be classified as an “old type” of lightweight construction.
Bungalow Construction
What size are the studs and rafters in BUNGALOW construction?
Rough Cut 2x3 or 2x4
What size is the ridge board in BUNGALOW construction?
1 x 6
OPEN WEB BAR JOIST:
Joists are spaced ___ ft. apart to accept ________ _______ decking.
8 ft.
corrugated metal
OPEN WEB BAR JOIST:
Top and Bottom chords are made of ___ in. steel?
1/8”
OPEN WEB BAR JOIST:
Web supports are made of solid ___ in. steel bar?
5/8”
Tilt Up construction can be up to how many stories in height?
5 stories
KING’s ROW is every ___ to ___ row of bricks?
4 to 7
Rafter Size:
Sawtooth: ___x___
Tied Truss Arch: ___x___
Sawtooth: 2 x 8
Tied Truss Arch: 2 x 10
Truss Size:
Lamella: ___x___
Bridge Truss: ___x____
Tied Truss Arch: ___x___
Lamella: 2 x 12 truss
Bridge Truss: 2 x 12 truss
Tied Truss Arch: 2 x 12 truss or larger
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.
Air entrained mixture of sand, cement, and occasionally pea gravel.
4 x 4 in. or 6 x 6 in.
3 to 4 in.
Mill and Timber structural members may be ___x___ inches for strength
8 x 8 in.
What size are the Rafters on a Bridge Truss?
2 x 6 in.
What size is the Top Truss of a OPEN WEB roof?
2 x 3
When exposed to sufficient heat, Metal Beams can EXPAND ____ inches per 100 ft.
9 in.
