Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 385
313 50 STAIR-BUILDING owing to it being made square to the tangent d, which is shown tohave the same inclination as the rail of the flight adjoining. As previously stated, the use made of tangents is to square thejoints of the wreaths; and in this diagram it is clearly shown that theway they can be… … Landing Fig. 94. Tangents Unfolded to Find Their Inclination. a and m shown in this diagram, was demonstrated in Fig. 89; and howto find the direction of the tangents c and d was showTn in Fig. 92. Fig. 94 is presented to help further toward an understandingof the tangents. In this diagram they are…
Architecture · Building
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