Before I describe the principle types of trusses, let's define what exactly a truss does. First, a truss withstands gravity and holds up the roof. That may sound obvious, but it's the single most ...

From top to bottom, components are as follows: roof panel; seal; wall panel; “bolt in place” welded frame. Signed in graphite at lower right: “2/28/62 E/ HOYT”. Credit Line Gift of Donald Deskey Date ...