2 heavy timber construction details.
Timber frame roof construction details.
Joists are placed on edge spaced at 400 600mm centres supported by external and internal load bearing walls.
Below is a sketch of the original roof wall structural details for this building.
Shipwrights were the original american timber framers.
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.
An early form of the stud wall only much heavier.
Trada and approved document part a give guidance on sizes of joists for flat roofs relating to spans and loading.
The original roof was built using purlins beams extending between gable ends.
Timber framing in america is an art of craftsmanship brought by the settlers in the 1500 s.
The construction of the flat roof is similar to that of the timber upper floor.
Modern timber roofs are mostly framed with pairs of common rafters or prefabricated wooden trusses fastened together with truss connector plates.
Timber framed and historic buildings may be framed with principal rafters or timber roof trusses.