Engineering and Contracting . The State forests of Switzerland yieldabout 64 cu. ft. per acre; the corporationforests about 42 cu. ft. Fig. 1. and %-in. corrugated bars were used inone pipe. One pipe was reinforced withClinton Wire Mesh, No. 3 wire beingused, and the fifth pipe was reinforced withfence wire laid in the center of gravity ofthe concrete. The steel, which was placedlengthwise of the pipe, is not considered infiguring the reinforcement. To allow thesteel to be made circular in shape, the pipeswere made with the vertical diameter 4 than the horizontal. The rings were all
Engineering and Contracting . The State forests of Switzerland yieldabout 64 cu. ft. per acre; the corporationforests about 42 cu. ft. Fig. 1. and %-in. corrugated bars were used inone pipe. One pipe was reinforced withClinton Wire Mesh, No. 3 wire beingused, and the fifth pipe was reinforced withfence wire laid in the center of gravity ofthe concrete. The steel, which was placedlengthwise of the pipe, is not considered infiguring the reinforcement. To allow thesteel to be made circular in shape, the pipeswere made with the vertical diameter 4 than the horizontal. The rings were all circular in section, 4ft. inside diameter and 2 ft. long, the rein-forcement being placed as shown in Fig. reinforced rings, of which there weresixteen, were 4 ins. thick, while the eightplain concrete rings were made 6 In most of the rings the steel wasshaped somewhat like an ellipse in order tobring the reinforcement near the tensionside at the quarter points. In Nos. 934,971, and 972 the bars were flatten
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherchicago, bookyear19
