Common trusses
The most widely used profile, with a triangular shape and internal webs in a W or Fink pattern. Efficient for gable roofs with flat ceilings.
Hip trusses
Hip roofs — very common in Florida — use a stepped series of hip trusses, a hip girder, and jack trusses to create sloped ends on all four sides.
Scissor and vaulted trusses
Scissor trusses have sloped bottom chords to create vaulted interior ceilings. They usually produce more horizontal deflection at bearings, which should be considered in the design.
Attic trusses
Attic trusses create an open rectangular space within the truss for storage or a bonus room. Floor loading for the attic room must be specified.
Mono and girder trusses
Mono trusses slope in one direction for sheds and lanais. Girder trusses are multi-ply trusses designed to carry other trusses or concentrated loads.
This article is general information, not engineering or legal advice. Always confirm requirements with your engineer of record and local building department.