Truss Roof Framing Details

In a nutshell it s made up of a central vertical post called the king post two rafters meeting at the apex and a tie beam or the horizontal base.

Truss roof framing details.

Details for conventional wood frame construction. This is the distance between trusses. Choose the design of the roofing trusses. Partially these will depend on the style of roof you ve selected but you ll also have some wiggle room depending on the design elements of the house.

It is often used in simple roof trusses such as in the shed porch and garage. When making a selection below to narrow your results down each selection made will reload the page to display the desired results. The steeper the roof the more expensive the trusses get because the longer the boards get and the more roof area increases. For conventional roof construction using a ridge beam the roof truss span column above is equivalent to the distance between the supporting wall and the ridge beam.

The wide variety of possible roof and floor truss designs and combinations is illustrated by figure 1. When the roof is framed using a ridge board the roof truss span is equivalent to the distance between the supporting walls as if a truss is used. The first approach to achieving a strong durable struc ture involving economical use of materials is to follow a basic modular plan for layout and attachment of framing members. This type of truss is perfect for the dining room living room great room and kitchen.

A truss frame consists of a roof truss and a floor truss joined by exterior wall studs. You will also incur additional costs because it is much harder to deck and shingle a roof that is 12 12 pitch versus a 4 12 roof. Wood construction data 1. Like wall studs and floor joists rafters and trusses are spaced every 16 or 24 inches from center to center.

Post frame roof truss 23 residential end frame 1 residential roof truss 88 style. Stick framing combines roof rafters with ceiling joists. Most roofs utilize 16 inch spacings for strength and rigidity. The rafters are usually positioned directly above the wall studs.

A pitch truss with a sloping or non sloping vertical interior ceiling detail. The chart at left provides a convenient means of determining an equivalent concentrated load for representative roof loads which incorporate a 15 load duration factor for the roof load only. End walls may be truss framed with field assembled stud infill prefabricated in. Common 60 dropped end frame 3.

Floor truss cantilevers often support load bearing walls carrying roof live loads and wall material dead loads. The framing style of the roof refers to the actual components of each roofing truss and the design of the structural foundation of that roof.