0 the end of a piece of wood that is shaped to fit into a mortise (= an opening) in another piece of wood to form a joint
This component of force along the rafter must be carried by a tenon with a comparatively small bearing area.
In the conventional joint at this point the foot of the principal is fixed by a central tenon and wooden pegs.
The forces at the joints and hence the bearing and shear stresses on the tenons can be calculated with relative ease, as can the bending stresses in the beams.
Generally the size of the mortise and tenon is related to the thickness of the timbers.
The walls are structured with vertical and diagonal hand-hewn timbers also set with pegged mortise and tenon joinery at the sills and plates.
The hand saw is a bit like a tenon saw, but with one flat, sharp edge.
The tenon is formed on the jamb and the mortise to receive the tenon is formed on the curved member.
There are no mortise and tenon fastenings, and no sewing.
