Timber Frame Roof Details

Shipwrights were the original american timber framers.

Timber frame roof details.

1 8 pitch is given so 24 x 1 8 equals 3 or unit of rise in inches. 44 0 1483 770863 e mail. The roof sheathing consisted of inch thick wide pine boards nailed to the purlins and thick enough to resist much sagging. Above these components is a rack of common rafters.

There is a hierarchy of timber framing at work here with trusses supporting the ridge and purlin beams. If the unit of rise in inches is 3 then the cut is the unit of rise and the unit of run 12 inches or 3 12. Many people still think that the roof structures of timber framed buildings look like the upside down hulls of boats. Figure 2 2 roof framing terms.

2 heavy timber construction details. 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. A timber frame truss roof with ridge beam purlins and common rafters is a stunning combination that creates visual interest and structural complexity. Timber frame standard details september 09 building 1 grosvenor court hipley street old woking surrey tel.

Line length is the hyptenuse of the triangle whose. The original roof was built using purlins beams extending between gable ends.