Hatfield, Robert Griffith, 1815-1879. [from old catalog] · New York & London, Wiley and Putnam · leaf 219
ound; 204 AMERICAN HOUSE-CARPENTER. and that, although the tread and rise cannot be proportionedmerely in accordance with the style and importance of the build-ing, yet this may be done according to the angle at which theflight rises. If it is required to ascend gradually and easy, thelength from… … 358.— To proportion the rise and tread to one another.Make the line, a b, {Fig, 254,) equal to 24 inches ; from b, erectb c, at right angles to a b, and make b c equal to 12 inches ; join aand c, and the triangle, a b c, will form a scale upon which tograduate the sides of the pitch-board. For…
Carpentry · Architecture
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