Timber Roof Framing Terminology

In the 17th and 18th centuries ridge piece and ridge pole were used respectively to designate a horizontal timber or a pole at the ridge of a roof.

Timber roof framing terminology.

Horizontal timbers used to support floors and ceilings. The simplest form of pitched roof consisting of rafters inclined at 30º. Terminology timber framing system terminology. Below is a list of terms related to the timber frame industry.

What s the difference between a bent and bay system and a post and beam system. A diagonal piece of timber used to support beams. Collar ties rafter ties tension beams structural ridge beams. Roof features associated with basic roof framing terms are shown in figure 2 2.

Each bent forms an end wall in a bay. 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. Common timber frame terms adze. The primary vertical timbers in a timber frame.

Framing terms knowing the basic vocabulary is a necessary part of your work as a builder. Like individual slices in a bread loaf bents extend completely through. What was once a pole or timber is now a milled board typically a 1 by 6 or larger for houses hence today s use of the term ridge board. Roof framing terms are related to the parts of a triangle.

The most commonly used joinery in timber framing systems. It is a waterproofing layer made of regular felt stacked above the solid. Wood used in. The following glossary assumes that longitudinal is the direction in the ground plan which runs parallel to the ridge while transversal is the direction parallel to the gables or orthogonal to the ridge.

In the following section we ll cover some of the more common roof and rafter terms you ll need. 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. An axe like tool with its blade at right angles to its handle used to shape or dress timbers. Series of timbers that are used to support roofs.

A bearing timber forming part of a suspended timber floor to which the floor boards are nailed to the top and a ceiling may be attached beneath or 2 ceiling joist. A 45 degree flat edge planed or routed along the outer or leading edges of a timber. The primary horizontal support timbers in a timber frame. Timber framing can be confusing if you re unfamiliar with the terminology used.

Terminology timber framing page 1 terminology timber framing roof structures note. A bearing timber spanning an area to which a ceiling is fixed to the underside only. Some of these can support the roof and prevent ridge sagging and wall spreading.