Roof Rafter Trusses

These trusses the meet building code criteria as specified by structural building components of america sbca and the truss plate institute tpi.

Roof rafter trusses.

If we go any larger it will require more webbing inside the truss which will directly affect the cost of the truss. Rafter boards are fastened to the ridge board at the peak and the top plate where they join the wall. Pre manufactured stock trusses are constructed with spruce pine fir spf or southern yellow pine syp lumber. Steeper roof pitches require longer webs which add to the cost.

It can take various forms and often used for aesthetic purposes adding height and focal interest to the ceiling. This 26 span truss with a 4 12 roof pitch is the most economical truss we can build. Roof trusses are engineered wood alternatives to hand framed rafters. Live loads are not always present.

Most common selections. Examples of live loads are snow wind rain and temporary construction loads. Shop floor trusses spacer post frame truss. The boards creating the slope of the roof are wider than lumber used to build trusses 2x8s 2x10s and 2x12s are most common in rafters vs.

The primary difference between roof rafters and trusses is the method of construction. They support live and dead loads by efficiently transferring the loads to the building walls or supports. Up to 120 spans. Shop roof trusses spacer floor truss.

A pitch truss with a sloping or non sloping vertical interior ceiling detail. Click to add item 26 spreadweb residential roof truss 5 12 pitch 87 to the compare list compare click to add item 26 spreadweb residential roof truss 5 12 pitch 87 to the compare list add to list click to add item 26 spreadweb residential roof truss 5 12 pitch 87 to your list. Let s begin by comparing these two different roof styles. Rafters are beams that run from the peak of the roof to the top plate of the supporting walls.

Most trusses plants are automated which means they are built in no time. Trusses are manufactured in the factory within a controlled environment to ensure great quality output. Dead loads are always present. While they function similarly they have unique differences that affect how they attach to the supporting walls.

They are designed at a 4 12 pitch to be spaced 2 foot on center. This type of truss is perfect for the dining room living room great room and kitchen. Both trusses and rafters can be used to create the roof of a building. The same is true if we make it steeper.