Which construction type is associated with bowstring trusses?

Bowstring trusses are primarily associated with wood or steel construction. This construction type features a curved top chord and a straight bottom chord, which allows for a wide, unobstructed space underneath. The materials used in these trusses can either be wood or steel, depending on the intended use and structural requirements.

Wood bowstring trusses are prevalent in older buildings, particularly in warehouses or older commercial structures, offering a vintage architectural style while providing sturdy support. On the other hand, steel bowstring trusses are often utilized in modern constructions to allow for larger spans without columns interfering with the interior space, making them ideal for gymnasiums, auditoriums, and industrial buildings.

The other construction types listed do not align with bowstring trusses. Concrete is typically used for solid structural elements but does not equate to the trussed design. Metal sheathing refers to a covering or skin applied to a structure, and plastic composites are synthetic materials not traditionally used in truss systems. Thus, the correct association of bowstring trusses with wood or steel solidly supports both their historical and contemporary applications in construction.