Chicago : Engineering and Contracting Pub. Co. · leaf 325
00 10.42 4.5 909.90 10.39 4.5 1,346.6! 18.83 I.I 545.26 1 1.20 4.5 393.13 11.5:; 4.5 712.25 8.40 3.5 L.488.00 7.6S 3.5 1,286.00 6.82 3.1 657.75 24.86 107.68 21.57 4.7 127.on 32.35 1,186.76 17.10 i.i l.i.l 1 On 111 1 719.60 a 99 L7 673.36 72.40 $3 Cost of—maituenancTotal. Ann$3,222.526.6S393.2144… … September 20, 1911. ENGINEERING & CONTRACTING the dam necessitates a considerable fall wherethe two join and the face of this fall worksback due to erosion and endangers the dam.A successful method of meeting this difficultywas the construction of brush drops as shownby Fig. 2. The construction…
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