Roof Framing Nomenclature

2 part of a flat roof structure that receives the ends of the flat roof joists.

Roof framing nomenclature.

Roof shapes differ greatly from region to region. 1 part of a pitched roof construction that receives the feet of the spars sp ars and ceiling joist ends. The main factors which influence the shape of roofs are the climate and the materials available for roof structure and the outer covering. Includes illustrations that show roofs have hip rafters ridge boards jack rafters and more.

If you re trying your hand at constructing an outbuilding like a garage shed or pole barn you ll need to understand the basic components of wall framing before you get started. A horizontal timber or metal resting at the peak of the roof the rafters and trusses are connected to the ridge board for a cohesive framework. Roof terminology is also not rigidly defined. Valley the inward angle of two sloping roof sections.

A composite decking made of solid materials it resembles real wood and particularly strong and stable for bearing heavy load. Here is a closer look at common roofing terms. Sway bracing there are a few ways to sway brace the wall. Framing consists of a doubled valley rafter in the middle that extends from a top plate corner to a second ridge board with angled jack rafters for support.

Framing terms knowing the basic vocabulary is a necessary part of your work as a builder. The edge of a roof which runs from eaves to ridge at a gable. This article describes and illustrates the different types of support that prevents roof sagging and wall bulging at buildings including definitions of collar ties rafter ties and structural ridge beams. Roof framing involves a lexicon all its own.

The top horizontal framing members of a framed wall. Roof features associated with basic roof framing terms are shown in figure 2 2. Time of manufacture producing mill number and the grad ing rules writing agency. When repairing or replacing a roof it pays to be familiar with these terms.

However green building uses a single top plate and ensures that rafters and ceiling joists sit on the plate directly over the studs. Top plate or plates in conventional western platform framing there are two top plates. In the following section we ll cover some of the more common roof and rafter terms you ll need. Some of these can support the roof and prevent ridge sagging and wall spreading.

Usages vary slightly from region to region or from one builder or architect to another. Collar ties rafter ties tension beams structural ridge beams. It is a waterproofing layer made of regular felt stacked above the solid. 4 details for conventional wood frame construction.

This is to help prevent deflection and sag in the roof.