A post, either upon or under a beam, may be kept in its place by a joggle, or stub tenon (as described at p. 70); but, as there is some danger of the shoulders of the tenon bearing unequally and thus reducing the strength of the post, the angular bridle joint (Fig. 188) is recommended by Tredgold as being more easily fitted.

It has been proposed that the lower end of the post should be formed with a circular abutment, but this has been proved by experiment to impair its strength.

"When the beam meets the post at right angles to the side of its head, as in Fig. 191, a vertical tenon may be used, as shown.

If the beam is at an inclination to the post, one of the several forms of oblique joint may be adopted (see p. 70).