“ Glen Canyon Storage Unit will be the keystone in this whole structure. The dam spans the river near its exit from the Upper Basin, as if in the spout of a great funnel where it can control all of the water in the funnel’s cone—the Colorado’s own flow and all that its tributaries feed into it upstream from the dam. The powerplant will generate about 75 percent of the project’s total power and the reservoir will contribute about 75 percent of the water storage that the Congress authorized in 1956 as initial development for the Upper Basin. ”
Summary
“Glen Canyon Dam”, is a work by . It explores elements such as damsite, concrete and powerplant.
Quotes from Glen Canyon Dam ()
“ CONCRETE BLOCKS Q. How large are the blocks of concrete placed in the dam? A. They vary in size. The largest are 70 feet by 180 feet in area; all blocks will be 71⁄2 feet thick. Q. Why are blocks used rather than building the dam as one solid piece? A. Primarily, block placement facilitates cooling of the concrete and controls cracking due to contraction of the concrete. After the blocks have set and cooled, a mixture of cement and water (called grout) is pumped under high pressure into cracks between the blocks to form one solid mass of concrete. ”
“ The heat must be removed to prevent expansion and cracking of the concrete. The refrigeration plant supplies the slush ice and cold water necessary to reduce this heat. Q. How is the heat controlled? A. First, the aggregate is sprayed with ice water before going into the mixers. Second, slush ice, along with water, is used in mixing the concrete. Third, cold water is pumped through pipes embedded in the concrete to carry away the heat generated. Q. How long will cold water have to be pumped through the cooling tubes in the dam? ”
