A treatise on the construction of staircases and handrails ... Preceded by some necessary problems in practical geometry; with the sections and coverings of prismatic solids (1820)
Nicholson, Peter, 1765-1844 · London, J. Taylor · leaf 37
ng plane,as in the last Problem. Draw CI perpendicular to // C; take any number of points, a, a, a, &c. in the baseof the prism, at the angular points, when it consists of straight lines, as in Jig. 3,nnd at any convenient distances, when it is a curve, as in fig. 2; draw all the linesa n… … SECTIONS OF PRISMATIC SOLIDS. 19 spective lines b a in the same connexion; then, in the case where the sides of theprism are planes, join the two points in every two adjacent ordinates; and where thesurface of the prism between the bases is curved, trace a curve line through thepoints p. When the…
Stair building · Hand-railing
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