Shaw's Civil architecture; being a complete theoretical and practical system of building, containing the fundamental principles of the art (1852)
Shaw, Edward · Boston, J. P. Jewett · leaf 294
fill. r. … STAIRS. 119 in five or more blocks, or rings, according as theworkmen shall deem expedient. Fig. B is the plan of a circular dome; C the sec-tion, which shows at d and d how to square the pur-lines, so as to make them tend to the centre, or tostand square to the surface of the dome; but thereis not…
Architecture · Building
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