Stereotomy : Problems in stone cutting. In four classes. I. Plane-sided structures. II. Structures containing developable surfaces. III. Structrues containing warped surfaces. IV. Structures containing double-curved surfaces. For students of engineering and architecture (1875)
Warren, S. Edward (Samuel Edward), 1831-1909 · New York : J. Wiley and son · leaf 106
putting 0Ba = Runda2 = AjFB; = l1 = Rlx .0174533 X 120°, (3) where Rx = 7.5 + 2.5 = 10, whence nsa2= 20.94 ft. Further ; let C2y4, perpendicular to AB, = L = 14 ft. Then, as A2C2^ = (90 — 0.) AC = BA = A2C2 = L. sec (90 — 0) = L. cosec 0 = ^ And, see (1) and (2), AB: = CDX = ^AGf+B^l (4) Now… … 5T- — . 2r0 28 | - - - - — |-}c- Jfc^f n 24 82 STEREOTOMY. 4°. Avoiding the acute diedral angles, between the face andthe intrados, near the acute angles, as B, of the abutments, by-terminating the cylindrical intrados by a plane parallel, andnear to AB ; through r5 for example, and then completing…
Stereotomy
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