Appleton's cyclopædia of drawing, designed as a textbook for the mechanic, architect, engineer, and surveyor (1866)
Worthen, William Ezra, 1819-1897, [from old catalog] ed, Appleton, firm, publishers, New York. (1866. D. Appleton & co.) [from old catalog] · New York, D. Appleton and company · leaf 347
as in case of the arch,a tendency to raise the other side. The effectof this upward force is a tension on a por-tion of the braces, according to the position of the weight; but as braces,from the manner in which they are usually connected with the frame, arenot capable of opposing any force of… … Fi- 44.
