Truss Roof Framing Details

Construction documents shall be of sufficient clarity to indicate the location nature and extent of work and show in detail that such work conforms to the provisions of the code r106 1 1.

Truss roof framing details. Details for conventional wood frame construction. Attic trusses have a rectangular shape inside each truss. A complete load path from peak of roof to the foundation is required r301 1. 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.

The king post roof truss is the simplest of the trusses because of its simple composition. Trademark construction jmw truss and ace trucking provide full service rough framing coupled with panelized walls open web floor and roof truss systems throughout arizona central and southern california. Our unparalleled commitment to excellence in our engineering design and sales offices in california and arizona offers full service. Such methods use a 4 foot design module which governs a 16 inch spacing of joists studs rafters.

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. End walls may be truss framed with field assembled stud infill prefabricated in. A truss frame consists of a roof truss and a floor truss joined by exterior wall studs. Look at this photo of the space created by attic trusses at my home.

This is the distance between trusses. I have this above my own garage. This type of truss is perfect for the dining room living room great room and kitchen. The wide variety of possible roof and floor truss designs and combinations is illustrated by figure 1.

It can take various forms and often used for aesthetic purposes adding height and focal interest to the ceiling. 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. Floor truss cantilevers often support load bearing walls carrying roof live loads and wall material dead loads. A pitch truss with a sloping or non sloping vertical interior ceiling detail.

The steeper the roof the more expensive the trusses get because the longer the boards get and the more roof area increases. Wood construction data 1. If the roof slope is steeper than 9 inches in 12 inches of run it doesn t take much width to end up with a nice room 12 feet wide with an 8 foot ceiling. It is often used in simple roof trusses such as in the shed porch and garage.

Choose the design of the roofing trusses.