Long-span, open-web trusses provide architects with design freedom and engineers with a choice in material selection. The trusses are custom designed, detailed, and manufactured to meet the structural needs and design intent for the specific application.

Designing long-span structures requires an obsession with stability. Certainly, the structure has to hold up its own weight; just to span the required distance a structure has to support significant dead load. But the complexity of long-span design increases exponentially when snow load, wind …

Aug 25, 2016 · This document discusses different types of long span structures with spans larger than 20m. It describes various beam types used in long span structures like castellated beams, tapered beams, stub girders, and lattice beams. It also discusses other structural elements like trusses, arches, and cables that can be used to create long spans.

Nov 21, 2023 · Trusses are structural elements that can carry loads with relatively long spans compared to beams. Trusses are characterized by having tensions and compression members. These structures are often used in roof, floor and bridge structures. Let’s have a look at one example of a truss and its different members.

Dec 15, 2016 · Long span trusses are defined as trusses with clear spans 60' or greater. Due to their greater dimensions and weight, there is a greater chance of instability, buckling, and even collapse during handling and installation of long span trusses.

Warren trusses are commonly used in long span buildings ranging from 20 to 100 m in span. This type of truss is also used for the horizontal truss of gantry/crane girders.

The document discusses long span structures that create large, unobstructed interior spaces. It describes different structural systems for long spans including beams, trusses, and portal frames. Beams can be used to span over 30 meters.

Trusses, folding plates, shell structures, frames, tent structures, and tensile structures are the most prevalent forms of long-span structures. The diagrid systems, which are often employed in high-rise buildings, are another option for large-span constructions. A few examples where architects did not sacrifice their clear and spacious halls.

One common solution is to design the truss in multiple pieces: a base truss designed with a height feasible for shipping (10-12 feet) and a cap truss, sometimes called piggyback truss, designed to be installed on top of the base trusses to finish the slope.

Long span trusses are 60' or greater in length. A long span truss can pose a greater risk to installers because the dimensions and weight of the truss itself can create instability, buckling and collapse of the truss if it is not handled, installed and braced properly.