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 318
mmencing thesuperstructure, which would otherwise settle most over the deepest parts,on account of the greater number of mortar joints, and thus cause unsightlyfractures. Foundations in soil should be excavated to a depth below theaction of frost. Artificial foundations.—^Wherc the ground in its… … tion be adopted, tlie principle must always be tliat of extending tlie bear-ing surface as mucli as possible. There are many ways of doing tliis—asby a thick layer of concrete or bdton(fig. 1), or by layers of planking, or bya net-work of timber, or by increasingwidth of wall, or these different…
