The American house carpenter. A treatise on the art of building. Comprising styles of architecture, strength of materials, and the theory and practice of the construction of floors, framed girders, roof trusses, rolled-iron beams, tubular-iron girders, cast-iron girders, stairs, doors, windows, mouldings, and cornices; together with a compend of mathematics. A manual for the practical use of architects, carpenters, stair-builders, and others (1880)
Hatfield, R. G. (Robert Griffith), 1815-1879, Hatfield, O. P., ed · New York, J. Wiley & sons · leaf 635
ven byBfine.—Let cd {Fig. 412) be the given conjugate axis. Bisect 592 PRACTICAL GEOMETRY. c d in 0, and through o draw ab dX right angles \.o c d\ bisectCO in c; upon o, with oc for radius, describe the circle efgh;from e, through Ji and /, draw cj and ci\ also, from ^,through Ji and /, draw ^/^… … Fig. 413. This is an approximation to an elHpsis; and perhaps nomethod can be found by which a well-shaped oval can bedrawn with greater facility. By a little variation in theprocess, ovals of different proportions may be obtained. Ifquarter of the transverse axis is taken for the radius of…
Carpentry · Architecture · Building
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
