Framework extending from the roof surface that provides additional light and ventilation to an attic space.

Metal anchoring device used to fasten rafters or trusses to a wall to resist wind uplift loads.

Cord or rope attached to a structural member or other large unit that is being positioned by a crane, to assist in guiding the member into proper position.

The lower member of a truss.

A rigging device used when lifting large members with a crane.

Commonly referred to as a rat run. Often a 1 × 4 nailed to the ceiling joists at the center of the span to prevent twisting and to maintain alignment of center-to-center dimensions.

The triangular wall enclosed by the sloping ends of a ridged roof.

Framing members that attach to the side of the gable endwall to create an overhang. Also called soffit ladder framing.

Framing method in which framing members are installed one at a time (rather than as a prefabricated assembly).

The amount (in inches) that a rafter will rise per foot of run.

An L-shaped arrangement of lumber used to support ceiling joists and keep them in alignment.

A gable end roof member that extends beyond the gable to support a decorative end piece. Also referred to as a fly rafter.

A strong layer of boards, typically made of structural engineered paneling, fastened to the roof’s joists or trusses.

A nonstructural member used at the ridge of a roof to provide a common nailing surface and point of bearing for opposing roof rafters.

Structural members used to frame an overhang that cantilevers over the gable endwall. Also called outriggers. 

An asphalt-saturated felt or other composite or synthetic sheet material (sometimes self-adhering) installed between a roof deck and roof covering.

The board that is attached to the tails of the rafters to straighten and space the rafters and provide a nailing surface for the fascia.

A roof with four sides or slopes extending toward the center.

Steel joists, also known as bar joists, that are used to support roof loads.