Special Truss Types


A creative roof style often used in residential applications. The supporting structure must be designed to resist horizontal as well as vertical reactions.

3-Pinned Arch

With this shape both walls and the roof are included in one truss design.

Applications include Storage Buildings, Riding Arenas, Assembly Halls.

As with the A-Frame shape, vertical and horizontal reactions are generated and must be resisted by the foundations.

Mansard or Canopy


This style is often used in commercial applications as canopies over store front. Other applications include Mansard type roofs. This truss is “hung” from the supporting structure of masonry wall, steel or timber framings; and in effect “cantilevers” off the side of the building.