Timber Frame Roof Construction Details

A common form of timber framing for smaller structures was to frame the walls with vertical members raise it then add roof members to enclose.

Timber frame roof construction details.

Shipwrights were the original american timber framers. The roof sheathing consisted of inch thick wide pine boards nailed to the purlins and thick enough to resist much sagging. The original roof was built using purlins beams extending between gable ends. An early form of the stud wall only much heavier.

2 heavy timber construction details. Modern timber roofs are mostly framed with pairs of common rafters or prefabricated wooden trusses fastened together with truss connector plates. Many people still think that the roof structures of timber framed buildings look like the upside down hulls of boats. The construction of the flat roof is similar to that of the timber upper floor.

Timber framed and historic buildings may be framed with principal rafters or timber roof trusses. Wood frame or glued laminated arches for roof con struction which spring from the floor line or grade and do not support floor loads shall have members not less than 6 inches nominal in width and 8 inches nominal in depth for the lower half of the height and not less than 6 inches nominal in any dimension for the upper half of the height. Below is a sketch of the original roof wall structural details for this building.