Steel Bowstring Roof Truss

All american made engineered agricultural gable trusses 4 12 pitch heavy duty 2 angled steel painted black.

Steel bowstring roof truss.

One of the common long span trusses for roof support is the bowstring truss photo 1 above. This type of truss has a straight flat bottom chord that makes attachment of a ceiling simple. 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. 12 50 a foot 12 40 14 95 a foot 42 60 all lean to shed trusses 1 12 pitch.

All trusses come with necessary nuts and bolts to assemble. 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. Roof trusses are on a 4 12 pitch and lean to trusses are on a 2 12 pitch. You see this type of steel roof truss in the shape of a triangle.

Curved steel sections angles beams bars channels pipe and tube often form the arched sections of bowstring trusses. That triangle has a foot a gently sloping long side and a very steep short side. All trusses come with a 1 overhang. During world war ii thousands of bowstring trusses held up the curved roofs of aircraft hangars and other military buildings.

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. Several beams make up the arch while the roof outside is made up of metal sheets or other materials. 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. Although the trusses shown by figs.

All come with 16 overhang past post. Curved steel roof trusses curved roofs take many forms. Custom overhang and pitches are available for additional charges shown below. 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.

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. The design helps reduce glare from the sun and let in natural lighting. 94 and 95 are known as bowstring trusses the usual type of the bowstring truss is that shown by fig. The steep side usually faces north or north east.