. Principles of irrigation engineering, arid lands, water supply, storage works, dams, canals, water rights and products. Fig. B.—Notched checlc and drop with projecting lip beneath each notch to dif-fuse and break the force of the falling water. Rio Grande Project, N. Mex. (Facing Page 80) Plate VI. Fig. C.—Concrete chute, built instead of a series of drops, and terminatingin a water cushion with concrete baffle board. Boise Project, Idaho. M 1^. ..^^ tf^-^. \Mm *a!g»^^^^^^ - T^i mi— <** __ ^ W %? ^ f.,. ». .....a^MMM T/35 pp -: TMI ^^fe BjS «IB ^^ ^y a ^^^S^m^^^F ^s - J^g ?^^^^s a
. Principles of irrigation engineering, arid lands, water supply, storage works, dams, canals, water rights and products. Fig. B.—Notched checlc and drop with projecting lip beneath each notch to dif-fuse and break the force of the falling water. Rio Grande Project, N. Mex. (Facing Page 80) Plate VI. Fig. C.—Concrete chute, built instead of a series of drops, and terminatingin a water cushion with concrete baffle board. Boise Project, Idaho. M 1^. ..^^ tf^-^. \Mm *a!g»^^^^^^ - T^i mi— <** __ ^ W %? ^ f.,. ». .....a^MMM T/35 pp -: TMI ^^fe BjS «IB ^^ ^y a ^^^S^m^^^F ^s - J^g ?^^^^s a ^^^ s^^ »^r^ ^ l^^,^... E ^;^^^^ •t^C Si^l^^ Fig. D.—Spillway lip to automatically permit escape of excess water fromcanal back into river and sluice gates provided to facilitate scouring out ofmaterials deposited in upper portion of canal. Salt River Project, Ariz. CANAL STRUCTURES 81 under a canal or whether it be used for carrying the waters of thecanal, the general principles of its construction do not differ mate-rially. The principal points to be considered in the design and con-struction of culverts are size or capacity, section, grades, economyand permanency of construction. The capacity of a culvert to carry the waters of a canal will belimited to the capacity of the
Size: 1901px × 1315px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectirrigat, bookyear1913
