Wood Roof Framing Systems

In buildings including residential structures framing systems typically consist of the roof structure that supports the roof.

Wood roof framing systems.

Lumber grades lumber is graded in accordance with standardized grading rules that consider the effect of natural growth characteristics and defects such as knots. Some of these can support the roof and prevent ridge sagging and wall spreading. Vineyard construction general contractors specialize in truss beam shoring repair earthquake strengthening and commercial framing in los angeles and orange counties. This article describes and illustrates the different types of support that prevents roof sagging and wall bulging at buildings including definitions of collar ties rafter ties and structural ridge beams.

Most wood used in light frame residential construction takes the form of dimension lumber. Line length is the hyptenuse of the triangle whose. If the unit of rise in inches is 3 then the cut is the unit of rise and the unit of run 12 inches or 3 12. It offers a new alternative in prefabrication and field assembly methods without basic departures from established.

Much of the united states has an abundant supply so wood frame buildings are common. Bending for a roof floor or wall surface. The two most common types of panelized wood roof systems used in north america are all wood and hybrid systems. Wood framing helps aide the loads to be distributed evenly while the steel or concrete columns take heavier loads directly down the columns.

1 8 pitch is given so 24 x 1 8 equals 3 or unit of rise in inches. Typical load transfer path on a wood frame the figure below displays how loads are carried through a wood frame system versus structural columns. An all wood system consists of glued laminated glulam beam girders with wood purlins glulam i joists or open web wood trusses wood sub purlins and a wood structural panel deck. Most people do not consider what is behind the painted walls or exterior surface in most buildings.

The truss framed system tfs is a new light frame wood construction concept that inte grates customary construction components roof trusses floor trusses and wall studs into unitized frames. Figure 2 2 roof framing terms. Framing must transfer all gravity uplift and lateral loads to the foundation. Deck exterior and interior load bearing walls beams girders posts and floor framing.

Homes are often constructed with a wood frame especially if the area has an abundant supply of wood.