Steel Bowstring Roof Truss

Bowstring trusses were a popular solution for structurally supporting roofs from the 1900s through the 1950s especially in buildings where large open spans were desired manufacturing facilities garages warehouses among others.

Steel bowstring roof truss. Custom overhang and pitches are available for additional charges shown below. For example bowstring trusses can be constructed of wood or steel. One of the common long span trusses for roof support is the bowstring truss photo 1 above. 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.

You see this type of steel roof truss in the shape of a triangle. All american made engineered agricultural gable trusses 4 12 pitch heavy duty 2 angled steel painted black. 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. Buildings built with bowstring truss roof structures have a number of other factors that can make them susceptible to collapse. Curved steel sections angles beams bars channels pipe and tube often form the arched sections of bowstring trusses. This type of truss has a straight flat bottom chord that makes attachment of a ceiling simple.

All come with 16 overhang past post. During world war ii thousands of bowstring trusses held up the curved roofs of aircraft hangars and other military buildings. 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. That triangle has a foot a gently sloping long side and a very steep short side.

In light roof trusses entirely bolted connections are less favoured than welded connections due to the requirement for gusset plates and their increased fabrication costs. 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. 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. 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.

Several beams make up the arch while the roof outside is made up of metal sheets or other materials. The steep side usually faces north or north east. Curved steel roof trusses curved roofs take many forms. 12 50 a foot 12 40 14 95 a foot 42 60 all lean to shed trusses 1 12 pitch.