Roof Framing Definitions

Some of these can support the roof and prevent ridge sagging and wall spreading.

Roof framing definitions.

Collar ties rafter ties tension beams structural ridge beams. Like wall studs and floor joists rafters and trusses are spaced every 16 or 24 inches from center to center. With wood shingles or shakes this is the thicker end. In this section we ll cover the most.

Roof slope and rigidness are for shedding water and bearing any extra additional weight. More recently a roof truss means a prefabricated structural timber framework delivered to site to form part of a roof. Sometimes found in very large buildings where big rooms resulted in few load bearing walls. The butt of a shingle is the end that faces down roof.

Types of roofs and define common roof framing terms. Roofs must also be strong enough to withstand high winds. Parallel framing member installed horizontally to support floor and ceiling loads. Roof structure definitions support choices for sloped roofs cantilevered roofs cathedral ceiling roofs.

Quite common until the 1920 s the function of a roof truss is to support the purlins. The rafters are usually positioned directly above the wall studs. Stick framing combines roof rafters with ceiling joists. The primary object of a roof in any climate is protection from the elements.

A beam placed perpendicular to wall suds above doors windows or other openings to carry the weight of structural loads. Mirrored pairs of rafters meet at a ridge and are connected across the base by a ceiling joist.