Roof Truss Geometry

Geometry with roof trusses i created some very nifty digital roof trusses for another resource the other day.

Roof truss geometry.

Under roof variant there are 4 truss shapes available see the drawing below. Move slider or directly enter angle to alter sweep angle of lower rafters and change the shape. I put so much effort into researching and building different truss styles that i decided to share the images as clip art in case other people can use these in worksheets etc. Swc can fabricate heavy timber trusses in a variety of well known truss geometries using connected straight members.

A truss is essentially a triangulated system of straight interconnected structural elements. Belfast roof truss is defined as a structural truss consisting of a curved top chord meeting a bottom chord at each end. The simplest form of a truss is one single triangle. The truss is a framework consisting of rafters posts and struts which supports your roof.

Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth. The options provided in the above dialog enable definition of geometry of a plane truss. Determine angle ahb and the total linear feet of lumber necessary to build the truss. Traditional king truss traditional queen truss fink or w shape truss howe or m shape truss scissor truss mono truss parallel chord truss there are unlimited variations of these designs when using different beam sizes overhangs.

All you to need about single roof double roof the belfast roof truss is in the form of a bow and is also called bow string or latticed roof truss. The main reasons for using trusses are. Long span curved roof trusses. The most common use of trusses is in buildings where support to roofs the floors and internal loading such as services and suspended ceilings are readily provided.

As we will see below there are several different types of designs and this will impact the angles and designs of the overall truss.