301, p.199.The ends of flooring boards are also slightly beveled so as to make a tight fit on the upper side.
7.

_Select the simplest form of joint and use the smallest number of abutments (bearing surfaces) possible, because the more complicated the joint or the greater the number of bearing surfaces, the less likelihood there is of a sound and inexpensive construction._ Illustrations of this principle are as follows: Usually a single mortise-and-tenon joint is better than a double one because of simplicity, strength and ease of making.

Where much surface is required for gluing, a double one may be better.
In a dovetail dado, Fig.

266, No.

28, p.