Chicago : Engineering and Contracting Pub. Co. · leaf 126
ing the stone byhand from the cars. (Fig. 2). At least one-third of the pieces in the apron were to beone-man stone, and no piece was to weighmore than 500 lbs. Quarry run is used, in-cluding spalls and chips weighing only afew pounds. This apron takes the place ofthe brush mattress; it is… … Fig. 1.—Trestle Used in Building South Jetty, Aransas Pass, Texas. water. Upon the caps were placed two 12x14in. stringers, upon which the rails, weighing56 lbs. to the yard, were laid. Each stringerwas composed of two pieces, each 6x14 ins.and 28 ft. long, laid side by side, breakingjoints and…
Buildings
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