OCR Text |
Show THE ALL-AMERICAN CANAL. 91 Estimate for construction of all-American canal of capacity to serve the Imperial Irrigation District with 1,600 second-feet additional capacity for Yuma project down to siphon drop. (First alternative: Pilot Knob to mesa canal No. 1, P,000 second-feet canal.) A first alternative estimate was made to provide a concrete-lined section through the sand hills. The concrete lining is to be 4 inches thick and extend 2 feet above the high-water line. The following are the principal hydraulic functions: Bottom -width.................................................feet.. 70 Depth........................................................do___ 15 Side elopes......................................................... 2tol Gradient........................................................... 0.00017 Velocity............................................feet per second.. 6 Discharge..............................................second-feet.. 9,000 Excavation: Earth, 40,736,000 cubic yards, at 30 cents............. $12,220, 800 Earth, 1,770,000 cubic yards, at 20 cents.........-.___ 354,000 Blow sand, 500,000 cubic yards,1 at 30 cente.......... 150,000 Rock, 312,000 cubic yards, at 75 cents............... 234,000 Concrete lining, 10,278,000 square feet, at 17 cents..... 1, 747, 260 Total.... „..................................:..... 14, 706,060 15 per cent contingency.............................. 2, 205,909 ----------------$16,911,969 Structures: East mesa canal No. 1 turnout......................... 24,000 26 miles of telephone..................,............. 5,850 Total............................................. 29,850 15 per cent contingency.............................. 4,477 ---------------- 34,327 Grand total................................................... 16,946,296 Estimate for construction of all-American canal of capacity to serve the Imperial Irrigation District with 1,600 second-feet additional capacity for Yuma project down to siphon drop. (Second alternative: Pilot Knob to mesa canal No. 1, 10,600 second-feet canal.) A second alternative estimate was made to provide a concrete-lined section through the sand hills, but with a deeper section than the first alternative estimate, in order to give an additional capacity of 1,600 second-feet. The concrete lining is to be 4 inches thick and extend 2 feet above the high-water line. The following are the principal hydraulic functions: Bottom width.......................................................feet.. 70 Depth........................................................do___ -16.3 Side slope.......................................................... 2 to 1 Slope...............................................................- 0.00017 Velocity............................................feet per second.. 6.35 Discharge..............................................second-feet.. 30,600 1 Estimated amount of sand that will blow in during construction. |
Source |
Original book: [State of Arizona, complainant v. State of California, Palo Verde Irrigation District, Coachella Valley County Water District, Metropolitan Water District of Southern California, City of Los Angeles, California, City of San Diego, California, and County of San Diego, California, defendants, United States of America, State of Nevada, State of New Mexico, State of Utah, interveners] : California exhibits. |