Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 383
. Fig. 93 is another view ofthese tangents in positionplaced over and above theplan tangents of the well-hole. It will be observedthat this figure is made upof Figs. 88 and 91 com-bined. Fig. 88, as herepresented, is shown to con-nect with a level-landingrail at a. The joint havingbeen made square… … 312 STAIR-BUILDING 49 Joint gent m of the lower wreath, and also square to the inclined tangent cof the upper wreath; the two tangents, aligning, guarantee a squarebutt-joint. The upper joint is made square to the tangent d, whichis here shown to align with the rail of the connecting flight; the…
Architecture · Building
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