Timber Pitched Roof Construction

A trussed roof will often rest on a timber wall plate as with a conventional one.

Timber pitched roof construction.

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. There are two basic methods of pitched roof construction. A pitched roof is a roof comprising a sloping surface or surfaces with an angle of usually over 20 degrees. One pitched roof construction method is a cut roof method.

All the figures are based on roofing tiles or slates laid on timber laths over sarking felt. Pitched roof timber sizes. Pitched roof construction. A cut roof this is the traditional method of cutting the timber on site and building up the roof using rafters ridge boards joists and purlins etc the exact details being determined by the size of roof size of timbers etc.

The pitch of a roof is its vertical rise divided by its horizontal span and is a measure of its steepness. Pitched roof designing buildings wiki share your construction industry knowledge. The following tables give details of the allowable spans and spacing for some of the more common timber sizes used in traditional roofing 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. It is a bi fold bi planer roof with a ridge at its highest point.