Timber Pitched Roof Construction

Building a pitched roof prefabricated trusses.

Timber pitched roof construction.

There are two basic methods of pitched roof construction. A pitched roof is a roof that slopes downwards typically in two parts at an angle from a central ridge but sometimes in one part from one edge to another. Each truss is lifted into position and fixed to the plate. To be more specific a pitched roof requires a pitch of more than 10 degrees or a roof with two slopes that meet at a central ridge.

The following tables give details of the allowable spans and spacing for some of the more common timber sizes used in traditional roofing construction. Pitched roof construction. The pitch of a roof is its vertical rise divided by its horizontal span and is a measure of its steepness. All the figures are based on roofing tiles or slates laid on timber laths over sarking felt.

A pitched roof is a roof comprising a sloping surface or surfaces with an angle of usually over 20 degrees. A trussed roof will often rest on a timber wall plate as with a conventional one. One pitched roof construction method is a cut roof method. This is more of a traditional manner in regards to cutting the timber while onsite and building up the roof by the use of rafters ridge boards joists and purlins among others.

It is a bi fold bi planer roof with a ridge at its highest point. Pitched roof timber sizes.