Timber Roof Framing Terminology

Timber framing can be confusing if you re unfamiliar with the terminology used.

Timber roof framing terminology.

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. Terminology timber framing page 1 terminology timber framing roof structures note. The primary vertical timbers in a timber frame.

Common timber frame terms adze. Horizontal timbers used to support floors and ceilings. Series of timbers that are used to support roofs. The primary horizontal support timbers in a timber frame.

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. A 45 degree flat edge planed or routed along the outer or leading edges of a timber. The mortise is the notching into a. Collar ties rafter ties tension beams structural ridge beams.

What s the difference between a bent and bay system and a post and beam system. 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. A composite decking made of solid materials it resembles real wood and particularly strong and stable for bearing heavy load. The most commonly used joinery in timber framing systems.

Roof framing terms are related to the parts of a triangle. Terminology timber framing system terminology. It is a waterproofing layer made of regular felt stacked above the solid. Like individual slices in a bread loaf bents extend completely through.

The simplest form of pitched roof consisting of rafters inclined at 30º. A diagonal piece of timber used to support beams. 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. Framing terms knowing the basic vocabulary is a necessary part of your work as a builder.

In the following section we ll cover some of the more common roof and rafter terms you ll need. 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. Below is a list of terms related to the timber frame industry. Wood used in.

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. Some of these can support the roof and prevent ridge sagging and wall spreading. Key timber frame terminology.