BOOK 29 Truck Operations Manual- BUILDING CONSTRUCTION Flashcards
_________ construction utilizes structural members that depend on size for strength.
Conventional
lightweight truss construction does not derive strength from size. Strength is obtained from multiple members that are in _________ and _________.
Compression and tension
A single lightweight truss structural member can span up to ___ feet.
70
For size-up considerations, roof styles can be divided into the following 6 categories:
- Gable
- Hip
- Flat
- Bridge Truss
- Arch
- Sawtooth
In conventional gable roofs, rafters are usually __x__ inches and are usually spaced __ to __ inches “on center”
2x6
16 to 24
Lightweight gable construction utilizes __x__ or __x__ inch wood trusses held together by metal gusset plate connectors.
2x3 or 2x4
Metal gusset plate connectors may vary in size, thickness, and depth of penetration. The most common are ___ gauge steel plates with prongs that produce ___ inch penetration.
18
3/8
In a bridge truss roof, the top cord is under ______, while the bottom cord is under ______.
Compression
Tension
Thickness of tie rods on a tied truss arch roof?
5/8”
_______ is when plywood decking is nailed to the structural members.
Diaphragm nailing
The web members of an open web roof are prefabricated using what material and are typically what size?
Cold rolled steel
1-2”
Open web construction can span up to ____ ft.
70
Metal gusset plates are typically ___ gauge steel plate with prongs that protrude ___” penetration.
18 gauge
3/8”
Flat metal gusset plate roofs can span up to how far?
80 feet
What are the 4 major components of a panelized roof?
- Beam (laminated wood or metal)
- Purlins
- 2x4” joists (rafters)
- 1/2” plywood decking
