Dams and Control Works, Volume 2, Part 4U.S. Government Printing Office, 1938 - Dams A description of representative storage and diversion dams and high-pressure reservoir outlet works constructed by the Bureau of Reclamtion. |
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... tion to its crest . It has a total volume of concrete in the dam alone of 3,250,000 cubic yards and has created Lake Mead , a reservoir of 30,500,000 acre - feet capacity , by far the biggest so far . When completed , Grand Coulee Dam ...
... tion to its crest . It has a total volume of concrete in the dam alone of 3,250,000 cubic yards and has created Lake Mead , a reservoir of 30,500,000 acre - feet capacity , by far the biggest so far . When completed , Grand Coulee Dam ...
Page 1
... tion of electrical energy as a means of making the project herein authorized a self - supporting and financially solvent undertaking . " According to preliminary estimates , about 1,900,000 acres of irrigable lands are located below the ...
... tion of electrical energy as a means of making the project herein authorized a self - supporting and financially solvent undertaking . " According to preliminary estimates , about 1,900,000 acres of irrigable lands are located below the ...
Page 2
... tion of 5,000 in the middle of a desert . Power had to be provided for construction and domestic purposes . The Union Pacific Railroad Co. constructed a branch line , 22.7 miles in length , from a point near Las Vegas . Nev . , to the ...
... tion of 5,000 in the middle of a desert . Power had to be provided for construction and domestic purposes . The Union Pacific Railroad Co. constructed a branch line , 22.7 miles in length , from a point near Las Vegas . Nev . , to the ...
Page 3
... tion to transmit power from the dam . Auxiliary power lines were erected from the substation to various parts of the work and a 7 - mile line from the substation to Boulder City was constructed by the Government . High temperatures at ...
... tion to transmit power from the dam . Auxiliary power lines were erected from the substation to various parts of the work and a 7 - mile line from the substation to Boulder City was constructed by the Government . High temperatures at ...
Page 4
... tion was used exclusively , consisting of either two 2 - cubic yard form buckets , carried on platform trucks , or 4 - cubic yard agitator bodies . The first step in the lining program involved the construc- tion of continuous concrete ...
... tion was used exclusively , consisting of either two 2 - cubic yard form buckets , carried on platform trucks , or 4 - cubic yard agitator bodies . The first step in the lining program involved the construc- tion of continuous concrete ...
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Common terms and phrases
acre-feet aggregate All-American Canal arch Arrowrock Dam basin borrow pit Boulder Dam bronze BUREAU OF RECLAMATION buttress cableway canal cantilever cement centers channel cofferdam construction contraction joints cooling cost crest cubic yards cut-off wall cylinder deflections depth designed diameter discharge diversion tunnel downstream face drain drainage drilled dumped earth elevation embankment emergency gates Engineering excavation feet long foundation gallery gate chamber Grand Coulee Grand Coulee Dam gravel gravity grout grout holes hoist horizontal hydraulic Imperial Dam inlet Installing and painting irrigation left abutment located lower material maximum miles mixer needle valves operation outlet Owyhee Dam penstock pipe placed pounds per square pressure pump reservoir reservoir water right abutment riprap river rock fill roller sand second-feet shaft side slab slope sluice sluiceway spillway square inch steel storage stresses structure temperature tests thickness tion trashrack trial load upstream face vertical water surface
Popular passages
Page 1 - That for the purpose of controlling the floods, improving navigation and regulating the flow of the Colorado River, providing for storage and for the delivery of the stored waters thereof...
Page 236 - The rock formations which make up the foundation and abutments at the site are homogeneous and uniformly elastic in all directions, and are strong enough to carry the applied loads with stresses well below the elastic limit. 2. The concrete in the dam is homogeneous and uniformly elastic in all directions and is strong enough to carry the applied loads with stresses well below the elastic limit.
Page 236 - ... site are homogeneous and uniformly elastic in all directions, and are strong enough to carry the applied loads with stresses well below the elastic limit. 2. The concrete in the dam is homogeneous and uniformly elastic in all directions and is strong enough to carry the applied loads with stresses well below the elastic limit. 3. The dam is thoroughly keyed into the foundation and abutment rock throughout its contact with the canyon profile; so that the...
Page 137 - ... in proportion to the capacity provided for each district in the canal except at Pilot Knob where the Imperial Irrigation District has all power rights. Power rights, on a part of the system used exclusively by one district, belong to that district. Construction features. — The Imperial diversion dam is of the slab-and-buttress type with a total length of 3,430 feet, inclusive of nonoverflow sections, headworks, gate structures, sluiceway, and overflow spillway. The overflow section is about...
Page 237 - ... fill. 5. The total vertical loads, including the weight of the water on the faces of the dam as well as the weight of the concrete, are assigned to the cantilever elements and are assumed to be transmitted to the foundations without any transfer of load laterally to adjacent cantilevers by means of vertical arching. 6. The effect of creep in concrete can be adequately allowed for by using somewhat smaller values of Young's modulus than would otherwise be adopted. These general assumptions...
Page 92 - With the gates raised, uplift pressures were assumed to vary from full reservoir pressure at the upstream face of the weir to zero or tailwater pressure at the downstream toe, and to be effective over two-thirds the horizontal area.
Page 9 - ... carried on in two stages : ( 1 ) circulation of air-cooled water through the pipe system and (2) circulation of refrigerated water through the same system. To supply the air-cooled water for the first stage of the cooling, an atmospheric tower was erected on the crest of the downstream cofferdam. The low humidity in the region and the natural draft in the canyon combined to make this method of cooling very effective. Water falling over the tower was collected in a basin at the foot of the structure,...
Page 242 - Analysis of Arch Dams by the Trial Load Method, by CH Howell, M.
Page 240 - ... dam to height. Such effects are not important in an arch dam built in a narrow canyon, as in Shoshone Dam, where the length of the top arch is less than the height of the structure. However, they are important in a relatively long arch dam like Gibson, where the top length is about four and one-half times the height of the structure. The general effect of considering twist action is a decrease in radial deflections at practically all locations, a decrease in maximum arch stress, a decrease in...
Page 48 - ... rehabilitation of the Roosevelt Power Canal and Diversion Dam, and miscellaneous betterments to the irrigation system to the extent the funds will allow. Repayment. — As previously stated, the Roosevelt Dam and the Granite Reef Diversion Dam and canal system were built by the Bureau of Reclamation in 1911 and turned over to the Salt River Valley Water Users