The American house-carpenter; a treatise on the art of building, and the strength of materials (1873)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York : J. Wiley · leaf 373
the length of the steps, and i u equal to 18 inches, and de-scribe the arcs, s t and u 6, parallel to mp ; from t, draw t w, tend-ing to the centre of the cylinder ; from 6, and on the line, 6 ux, runoff the regular tread, as at 5, 4, 3, 2, 1 and v ; make u x equal tohalf the arc,w 6, and make the… … Fig. 814 from a2, draw a2 s, parallel to n o, and equal to one tread; from sthrough 0, draw s 62. Then from w, draw w c2, at right angles to n o, and set up, onthe line, w c2, the same number of risers that the floor, A, is abovethe first winder, J5, as at 1, 2, 3, 4, 5 and 6; through 5, (on…
Carpentry · Architecture
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