Tben trace the outline of the hinge with a utility knife to mark the outline of the
mortise.
The
mortises cut into the ridge rafters, top plates, and sills along with the bevel cut on the ridge rafters and top plates would be expected to substantially affect the EI (stiffness) values of these members and thus the accuracy of the structural analyses of the frame.
Drill a series of holes to open the
mortise, starting at the ends and then drilling holes next to each other, leaving about 1/32 in.
Performance tests of furniture constructed with round
mortise and tenon joints indicate that when the shoulders on the tenons fit closely against the walls of the members in which the tenons are inserted, the shoulders considerably increase the bending moment capacities of the joints.
We've used traditional
mortise and tenon construction (see Fig.
The rational design of furniture constructed with
mortise and tenon joints dictates that expressions be available for estimating the bending moment capacity of these joints.
Bending moment capacity comparisons of mortise-and-tenon and dowel joints (Milham 1949) demonstrated that the strongest joints are obtained when a close tolerance is maintained between the tenon and
mortise; furthermore, the shoulder on the tenon has a pronounced effect on the bending moment capacity of the joint.
Tests were conducted to determine the withdrawal capacity of cross-pinned round
mortise and tenon joints.
Tests were conducted to determine the effect of cross pinning the tenons of round
mortise and tenon joints on the bending moment capacity of the joints.
In contrast, failures associated with
mortise or tenon failure produced an abrupt, brittle response, as a result of perpendicular-to-grain tensile as well as shear stresses.
As the separation between the crossed
mortises increased, however, leg strength increased substantially.
STEP 4: Mark the length of the
mortises in the stiles.