The type of building also affects the overall cost of roof trusses. For instance, a square house with a 2,000-square-foot roof might require 26 wood trusses, while a larger office building might ...

Early truss designs assumed wood tensile strength could be defined ... built later can obscure the true construction type. Important: Roof loading (firefighters, snow/ice, etc.) ...

One particular type of lightweight construction of concern ... On Dec. 26, 1992, two firefighters were killed when a lightweight wood truss roof collapsed while they battled an arson fire in ...

Many renovated buildings replace wood and masonry ... based on the type of roof construction used in ordinary construction, not noncombustible construction with steel trusses.

In addition, the National Fire Protection Association has raised concerns about the fire safety of truss-framed roofing made of engineered wood.