What is a characteristic of roof trusses in construction?

Roof trusses are a critical component in construction, designed to provide structural support for roofs. One defining characteristic is the use of plate fastenings, which involve metal plates or connectors that join the various members of the truss together, ensuring stability and strength. These plate fastenings allow for efficient transfer of loads, making trusses an effective choice for supporting both light and heavy roofs.

The assertion that trusses are purely decorative does not hold because their primary function is structural rather than aesthetic. The statement regarding insulation is also misleading; while trusses can facilitate easier installation of insulation in some designs, they don't eliminate the need for it altogether. Lastly, the belief that trusses are found solely in residential buildings is incorrect, as they are commonly employed in various types of buildings, including commercial structures. Therefore, the use of plate fastenings is a fundamental aspect of truss design, highlighting their functional nature in construction.