The inclined members of the roof framework.  They serve the same purpose in the roof as joists in the floor or studs in the wall.

Structural roof members

The sloping sections of a roof that support the glazing bars or tile battens

Beams that form the framework of a roof.

A slope framing member that supports a pitched roof.

The supporting framing to which a roof deck is attached.

Series of structural timbers rising from eaves to ridge to support pitched roof covering

Parallel framing members that support a roof.

A series of inclined timber structural members to which a roof covering is fixed.

Structural members that support the roof. They are connected to the top plates of the walls and the ceiling joists to create a triangular shape. A triangle cannot change shape unless one of the sides changes length. This cannot happen because wood does not stretch. This structural design prevents the roof system from being twisted by heavy loads or the wind.

One of a series of structural members of a roof designed to support roof loads. The rafters of a flat roof are sometimes called roof joists.

The lumber supports that make up the roof structure. Usually 2" x 12" lumber. The roof sheathing is nailed to the rafters. French (Chevrons)

Any of the beams that slope from the ridge of a roof to the eaves and serve to support the roof.

inclined timbers supporting a roof-covering.

The sloping timbers that create the roof framework.

Sloping timbers, which support the roof.

The supporting framing to which the roof deck is attached.

Vertical members of a roof frame.