Young, George, jr, Baxter, Hubert Eugene, joint author · New York, Macmillan · leaf 290
ODS OF PROJECTION 271 222. Typical Case. Figure 251 shows the elevation andsection of a flat arch in a battered wall. Let it be required toshow the keystone in isometric projection. For the sake ofclearness, the scale of the detail is enlarged. First draw aroundthe given stone a parallelepiped… … ^.■. * (1) k-^y b^ (2; Fig. 251 by.measuring along the isometric lines of the block distancesdetermined from the section and e\e\ ation. Any point withinthe block, as z, may be located by measuring along isometricliries, as hx, xy, yz, from some known starting point. The dis-tance between any two…
Geometry, Descriptive
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