The American house carpenter: a treatise upon architecture, cornices and mouldings, framing, doors, windows and stairs. Together with the most important principles of practical geometry (1852)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York, J. Wiley · leaf 35
line. Let a,(Fig. 30,) at the end of the line, c a, be the point at which theperpendicular is to be erected. Take any point, as 6, above the 3 18 AMERICAN HOUSE-CARPENTER. line, c a, and with the radius, b a, describe the arc, d a e, through d and Z>, draw the hue, d e ; join e and a, then e a… … 74, a.—A second method. Let &, {Fig. 31,) at the end of th*line, a b, be the point at which it is required to erect a perpen-dicular. Upon 6, with any radius less than b a, describe the arc,c e d ; upon c, with the same radius, describe the small arc at e,and upon e, another at d ; upon e and…
Carpentry · Architecture
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
