Timber Roof Framing Terminology

Like individual slices in a bread loaf bents extend completely through.

Timber roof framing terminology.

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. A composite decking made of solid materials it resembles real wood and particularly strong and stable for bearing heavy load. Series of timbers that are used to support roofs.

Collar ties rafter ties tension beams structural ridge beams. 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 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.

The most commonly used joinery in timber framing systems. The mortise is the notching into a. 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.

Below is a list of terms related to the timber frame industry. Horizontal timbers used to support floors and ceilings. It is a waterproofing layer made of regular felt stacked above the solid. An axe like tool with its blade at right angles to its handle used to shape or dress timbers.

A 45 degree flat edge planed or routed along the outer or leading edges of a timber. 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. Wood used in. 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 features associated with basic roof framing terms are shown in figure 2 2. 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. The primary vertical timbers in a timber frame. In the following section we ll cover some of the more common roof and rafter terms you ll need.

Terminology timber framing page 1 terminology timber framing roof structures note. What s the difference between a bent and bay system and a post and beam system. The simplest form of pitched roof consisting of rafters inclined at 30º. Framing terms knowing the basic vocabulary is a necessary part of your work as a builder.

Key timber frame terminology. A diagonal piece of timber used to support beams. The primary horizontal support timbers in a timber frame.