Roof Framing Detail Of Larsen Truss

The primary object of a roof in any climate is protection from the elements.

Roof framing detail of larsen truss.

In most cases these homes were framed with conventional 2 4 or 2 6 studs. Architecture cad details collections framing cad details 5 00 1 99 download sale. While most home builders will outsource the construction of roofing trusses the rafter supports of the roof itself learning to frame a roof yourself is one of the true arts of carpentry and a basic primer is covered below. Chinese architecture cad drawings chinese gate door design drawings cad details elevation 9 00 3 99 download sale.

Sketchup 3d models 20 types of residential building landscape sketchup 3d models v 8 69 00 29 00 download. Horizontal beams supported by posts and used to support the mid span of rafters to cover longer spans these are used in large buildings like the traditional large old barns in the us. Roof truss parts explained. Modified larsen truss retrofit.

Wherein is described the construction in 02002 of hjälmaren a timber frame larsen truss high post cape on the shores of the sheepscot river. A larsen truss is a lightweight wall extension with the purpose of creating extra wall space to house insulation. Framing a roof is the last step in framing new construction. One of a series of diagonal members of the truss that meet at the apex in order to support the roof deck and its loads.

A larsen truss is a type of lightweight non structural double stud wall assembly that allows for thicker insulation is ideal for dense packed cellulose insulation wall systems and a very high r value building envelope without many of the problems associated with double stud wall construction. The concept was first invented in 1981 by the canadian builder john larsen. Larsen trusses can also be used in retrofit work in which case they are installed on top of the existing siding. They were rendered using bryce 5.

The wide variety of possible roof and floor truss designs and combinations is illustrated by figure 1. A larsen truss enables us to execute the following. End walls may be truss framed with field assembled stud infill prefabricated in. It s a wall truss.

The pictures below are created from 3d models in an effort to make detail clear. A truss frame consists of a roof truss and a floor truss joined by exterior wall studs. Roof slope and rigidness are for shedding water and bearing any. Larson truss wall systems for new green home building renovations for max wall insulation.

If a truss is designed to bear the roof load it is not a larsen truss. Upon completing this section you should be able to identify the types of roofs and define common roof framing terms.