International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 313
the volumeof the masonry. The offsets are determined as fol-lows: Through r, the middle point ofthe back, draw any line f g. From/erect the perpendiculary/f. Divideg Ji into any even number of parts, inthis instance 4, and draw throughthese points of division lines parallelFIG. 401. to/ //. Then…
Railroad engineering
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