Pitched Roof Trusses

It is most often used for roof construction.

Pitched roof trusses.

They are designed at a 4 12 pitch to be spaced 2 foot on center. The chord size and web configuration are determined by span load and spacing. A howe scissors truss is so called because its appearance resembles that of an opened pair of scissors. Some common trusses are named according to their web configuration such as the king post fan fink or howe truss.

Live loads are not always present. Roof trusses are engineered wood alternatives to hand framed rafters. Pre manufactured stock trusses are constructed with spruce pine fir spf or southern yellow pine syp lumber. A cut roof this is the traditional method of cutting the timber on site and building up the roof using rafters ridge boards joists and purlins etc the exact details being determined by the size of roof size of timbers etc.

Naturally this truss is used in buildings for creating a pitched roof. These trusses the meet building code criteria as specified by structural building components of america sbca and the truss plate institute tpi. Examples of live loads are snow wind rain and temporary construction loads. A pitched roof uses not only the external wall systems but also particular parts of the internal walls.

Its bottom chords join together at the apex creating a pitched or vaulted ceiling. They support live and dead loads by efficiently transferring the loads to the building walls or supports. A pitched roof construction is the classic old school way of roof construction.