Steel Bowstring Roof Truss

In this truss all of the members except the upper chord are in tension and the strains in the bracing are comparatively slight thus making it a very economical truss for steel construction.

Steel bowstring roof truss.

All come with 16 overhang past post. 12 50 a foot up to 20 14 95 a foot over 20 we stock 24 30 and 40 gable trusses and 12 lean to trusses. Curved steel roof trusses curved roofs take many forms. All american made engineered agricultural gable trusses 4 12 pitch heavy duty 2 angled steel painted black.

Bowstring roof trusses usually large and arched the bowstring trusses give support to the building s weight such as the aircraft hangars and the warehouses that require a lot of open space inside. That triangle has a foot a gently sloping long side and a very steep short side. During world war ii thousands of bowstring trusses held up the curved roofs of aircraft hangars and other military buildings. This type of truss has a straight flat bottom chord that makes attachment of a ceiling simple.

All trusses come with necessary nuts and bolts to assemble. Curved steel sections angles beams bars channels pipe and tube often form the arched sections of bowstring trusses. Buildings built with bowstring truss roof structures have a number of other factors that can make them susceptible to collapse. You see this type of steel roof truss in the shape of a triangle.

One of the common long span trusses for roof support is the bowstring truss photo 1 above. For example bowstring trusses can be constructed of wood or steel. All trusses come with a 1 overhang. The design helps reduce glare from the sun and let in natural lighting.

Roof trusses are on a 4 12 pitch and lean to trusses are on a 2 12 pitch. 94 and 95 are known as bowstring trusses the usual type of the bowstring truss is that shown by fig. 12 50 a foot 12 40 14 95 a foot 42 60 all lean to shed trusses 1 12 pitch. The steep side usually faces north or north east.

Several beams make up the arch while the roof outside is made up of metal sheets or other materials. In the case of large roof trusses which cannot be transported whole welded sub assemblies are delivered to site and are either bolted or welded together on site. For trusses having a span of 75 feet or less the suspending pieces should be radials but in trusses of larger spans they may be vertical as in fig. Although the trusses shown by figs.