. Cassier's magazine . Companyhas constructed a concrete dam 1,120feet long. An additional spillway1,000 feet in length was also formedby dressing off the top of a naturalridge of slate rock. This dam formsa service reservoir of about three-fourths of a square mile in area, atthe southeast corner of which is lo-cated another concrete dam, withracks and head gates to admit waterto a canal 2 miles long, 70 feet wideand 15 feet deep, which ends in a5-2 dozen low dams of earth, rock withconcrete core, and concrete connect-ing the slate walls. Most of the lastnamed are retaining dams of thegravity
. Cassier's magazine . Companyhas constructed a concrete dam 1,120feet long. An additional spillway1,000 feet in length was also formedby dressing off the top of a naturalridge of slate rock. This dam formsa service reservoir of about three-fourths of a square mile in area, atthe southeast corner of which is lo-cated another concrete dam, withracks and head gates to admit waterto a canal 2 miles long, 70 feet wideand 15 feet deep, which ends in a5-2 dozen low dams of earth, rock withconcrete core, and concrete connect-ing the slate walls. Most of the lastnamed are retaining dams of thegravity type. The canal into which water fromthe service reservoir passes is 8,500feet long and excavated for itsentire length in the slope of a hill-side. For a mile of its length it isthrough clay and occasional rock-ridges ; the remainder of its length isin slate rock section, with some earthinterposed. The limiting condition ofconstruction of the earth section wasthe required capacity of the canal, or 402 CASSIERS MAGAZINE. POWER PLANT IN THE STRAWBERRY VALLEY UTAH The waste water is utilized for irrigation, while the electric current generated is employed for power and illumination. sufficient water to supply 80,000horse-power at the power house, anderosion of its banks based on a flowof water of 3 feet per second. Inorder to harmonize conditions it wasplanned for a cross-section 36 feetwide at the bottom, a depth of 15feet and slope to 2 to 1. It wasoriginally intended to line the entireearth-excavated canal with concrete,which would have lessened the gradeand diminished the this plan was changed and thebase of the earth canal was built 66feet wide and the slopes steeper thanoriginally designed, in part becausethe work was done by steam shoveland the wider cut was cheaper. At the foot of the forebay anotherconcrete dam, with racks and headgates, has been erected, and from thisstart the 7-foot penstocks, one ofwhich has been installed for each water-wheel. This
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyork, booksubjec
