Attic Rafters Trusses

Rafter boards are fastened to the ridge board at the peak and the top plate where they join the wall.

Attic rafters trusses.

A truss for a gable roof on one side of your home for example might need to be 15 feet 4 6 m long and 4 6 feet 1 2 1 8 m tall. Roof truss basics roof trusses are engineered wood alternatives to hand framed rafters. Room in attic trusses are professionally designed with state of the art computer programs. As we will see below there are several different types of designs and this will impact the angles and designs of the overall truss.

In finished space insulation is placed between the rafter boards and drywall or other material is fastened to the face. A mono truss is a one sloped truss that forms a right angle triangle. Room size will vary depending on the overall size and slope also referred to as pitch of the trusses. Pre manufactured stock trusses are constructed with spruce pine fir spf or southern yellow pine syp lumber.

Types of mono trusses 1. The truss is a framework consisting of rafters posts and struts which supports your roof. They support live and dead loads by efficiently transferring the loads to the building walls or supports. The dimensions of your structure will determine the angles formed by the truss s top and bottom beams or chords.

The structure should be sufficiently wide to allow for a loft and attic spaces the loft area must be on a living floor and have attic rooms on both sides separated by knee walls a flat ceiling in the loft area and a floor below steep enough roof pitch to provide appropriate ceiling height for the loft area. A mono truss roof allows for more sunlight and visual space proper drainage and relatively cheaper. They are designed at a 4 12 pitch to be spaced 2 foot on center. These trusses the meet building code criteria as specified by structural building components of america sbca and the truss plate institute tpi.

If you re building rafters and aren t sure where to start when determining the length of your lumber you re in the right place our rafter stock size calculator shows you how long your rafters should be so you ll know what you need in terms of framing lumber dimensional lumber studs and more. It s often used for sheds garages or extension of an existing roof. Residential room in attic trusses are an inexpensive way to add extra living or storage space to your home or garage while also increasing the value of your property. Certain conditions must be met before an attic truss can be built.

The lumber components are. Examples of live loads are snow wind rain and temporary construction loads. Compare click to add item 24 spreadweb residential roof truss 5 12 pitch 87 to the compare list add to list click to add item 24 spreadweb residential roof truss 5 12 pitch 87 to your list sku 1889754.