Long Span Steel Roof Structures

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Long span steel roof structures.

Generally long spans result in flexible column free internal spaces reduce substructure costs and reduce steel erection times. Steel is the major material for long span structures. Bending structures originally developed for bridges such as plate girders and trusses are used in long span buildings. They are commonly found in a wide range of building types such as factories warehouses agricultural buildings hangars large shops public halls gymnasiums and arenas.

Long span iii specifications loc seam loc seam 360. Long span roof are today widely applied for sport social industrial ecological and other activities. However they are not very efficient in their use of material. Spans in excess of 20 m can be achieved for the purposes of this article the definition of long span is taken as anything in excess of 12 m.

Plate girders are welded from steel plates to make i beams that are deeper than the standard rolled shapes and that can span up to 60 metres 200 feet. The experience collected in last decades identified structural typologies as space structures cable structures membrane structures and new under tension efficient materials. Long span roofs can create flexible column free internal spaces and can reduce substructure costs and construction times. Long span roofs are generally defined as those that exceed 12 m in span.

Long span iii roof panels have 1 1 4 ribs on 12 centers for an even shadowed appearance.