The American house-carpenter; a treatise on the art of building, and the strength of materials (1867)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York, J. Wiley · leaf 351
is the same as that of the first, whicL is here and is gene-rally the case, the face-mould for the lower twist will, when rti-versed, do for the upper flight: that part of the rail, therefore,which passes from e to c and from c to I, is all that will need ex-planation. Suppose, then, that the… … Fig. 294. be revolved on e c as an axis, in the manner indicated by the arcs,0 n and a ar, until it coincides with the plane, e r t c ; the line, a0, will then be represented by the line, a; n ; then add the paral-lelogram, xrt n, and the triangle, ctl, deducting the triangle, ers;and the edges of…
Carpentry · Architecture
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