Roof Framing Nomenclature

Roof shapes differ greatly from region to region.

Roof framing nomenclature.

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. Top plate or plates in conventional western platform framing there are two top plates. However green building uses a single top plate and ensures that rafters and ceiling joists sit on the plate directly over the studs. Roof features associated with basic roof framing terms are shown in figure 2 2.

The edge of a roof which runs from eaves to ridge at a gable. Some of these can support the roof and prevent ridge sagging and wall spreading. 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. The main factors which influence the shape of roofs are the climate and the materials available for roof structure and the outer covering.

It is a waterproofing layer made of regular felt stacked above the solid. Framing terms knowing the basic vocabulary is a necessary part of your work as a builder. Roof framing terms are related to the parts of a triangle. Time of manufacture producing mill number and the grad ing rules writing agency.

Usages vary slightly from region to region or from one builder or architect to another. Valley the inward angle of two sloping roof sections. 2 part of a flat roof structure that receives the ends of the flat roof joists. 4 details for conventional wood frame construction.

Sway bracing there are a few ways to sway brace the wall. 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. Includes illustrations that show roofs have hip rafters ridge boards jack rafters and more. Collar ties rafter ties tension beams structural ridge beams.

In the following section we ll cover some of the more common roof and rafter terms you ll need. 3 part of a suspended timber floor construction that provides a level. Roof framing involves a lexicon all its own. A composite decking made of solid materials it resembles real wood and particularly strong and stable for bearing heavy load.

When repairing or replacing a roof it pays to be familiar with these terms. 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. A building s frame is the skeleton that supports all of the finishing features like drywall doors windows and even your roof. Roof terminology is also not rigidly defined.

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