Engineering and Contracting . ver Value.—From testsmade by Elwood Mead and B. A. Etcheverry,at the University of California, the writerconcludes that the rate of percolation through less 25 per cent loss = miners inch at10 cts. per miners inch per day = per annum,$ Total annual irrigation loss, $ Capitalized at 10 per cent, $. Or per foot, $0,585. Stinimai-y.—Power loss per foot, $; ir-rigation loss per foot, ; total loss perfoot, $2,535. The first cost and the annual charges ofeach type of conduit are next computed. Theannual charges are taken as consisting o
Engineering and Contracting . ver Value.—From testsmade by Elwood Mead and B. A. Etcheverry,at the University of California, the writerconcludes that the rate of percolation through less 25 per cent loss = miners inch at10 cts. per miners inch per day = per annum,$ Total annual irrigation loss, $ Capitalized at 10 per cent, $. Or per foot, $0,585. Stinimai-y.—Power loss per foot, $; ir-rigation loss per foot, ; total loss perfoot, $2,535. The first cost and the annual charges ofeach type of conduit are next computed. Theannual charges are taken as consisting of thefollowing items: Interest, depreciation, taxes,,inspection, and repairs. The annual charges-of each conduit are capitalized at 10 per centand added to its first cost, which gives a fig-ure having a real comparative value. For in-stance, we obtain the comparison between a. -8 4 diaiu^— ^C. toC. I? 4 X 12 Concrete pobtVjiam. 8C. to C. ? L_j ^?^ L-J Uraiuage ditch-^ —-J^S^s.^ METAL FLUME. 4—3 I Min. IBerm J CEMENT-LINED CANAL
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