Design and construction: Bull.1. General features. Bull.2. Boulder Dam. Bull.5. Penstocks and outlet pipes. Bull.6. Imperial Dam and desilting works |
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Common terms and phrases
aggregate All-American Canal desilting All-American Canal headworks American Canal Arizona abutment average Axis bottom buttresses bypass California abutment cofferdam Colorado River Compacted embankment concrete piles construction control house crest cubic foot cut-off deposited depth dike discharge downstream apron drain effluent elevation excavation fanglomerate Flexible joint-seal flow gate structure Gila Canal desilting Gila Canal headworks grade Gravel blanket hoists Hoover Dam hydraulic jump Imperial Dam Imperial irrigation district Imperial Reservoir Imperial Valley inches influent channel joint Laguna Dam length levee load located maximum nonoverflow structures operation overflow weir Parker Dam paving percent piers pits pounds per cubic pump radial gates reinforced-concrete rhyolite riprap Rock fill roller gates Rubber water-stop samples sand scraper second-feet shear shown in figure side sill silt slopes sluice Steel sheet-piling tailwater tests thick tion training dike trashrack trench unit upstream apron vertical wall water surface width Wooden sheet-piling Yuma
Popular passages
Page 196 - The cement shall not develop initial set in less than 45 minutes when the Vicat needle is used or 60 minutes when the Gillmore needle is used. Final set shall be attained within 10 hours.
Page 18 - Canyon adequate to create a storage reservoir of a capacity of not less than twenty million acre-feet of water and a main canal and appurtenant structures located entirely within the United States...
Page 96 - Standard Specifications for Highway Bridges of the American Association of State Highway Officials...
Page ii - A series of bulletins now being prepared for publication to record the history of the Boulder Canyon project, the results of technical studies and experimental investigations, and the more unusual features of design and construction.
Page 196 - The compressive strength of mortar cubes, composed of 1 part natural cement and 1 part standard sand by weight, shall be equal to or higher than the values specified for the ages indicated below: 1 day in moist air, 6 days in water 1 day in moist air.
Page 13 - Article 21. The United States also reserves the right to, and the District agrees that it may, at any time prior to the transfer of constructed works to the District for operation and maintenance, increase the capacity of the said works and contract for such increased capacity with other agencies for the delivery of water for use in the United States ; provided, however, that such other agencies shall...
Page 27 - Fine sand 7.0: Medium sand 6.0: Coarse sand 5.0: Fine gravel 4.0: Medium gravel 3.5: Coarse gravel including cobbles 3.0: Boulders with some cobbles and gravel 2.5: Soft clay 3.0: Medium clay 2.0: Hard clay 1.8: Very...
Page 18 - The cost of construction of the dnm and canal will be repaid under contracts with the Imperial Irrigation District and the Coachella Valley County Water District whereby the districts repay the total cost without interest over a period of 40 years beginning 1 year after the completion of the work. The United States will retain operation and control of the diversion dam and the main canal to Siphon Drop. Below Siphon Drop the United States may turn over to the...
Page 27 - In all cases care must be exercised to insure that cut-offs are properly tied in at the ends, so that the water will not outflank them, and that there is no short route behind or under the abutments through which a channel may be formed. In order to prevent failure of dams by percolation directly through the foundation material the short-path-head ratios should not be less than eighttenths of those recommended for the weighted creep.
Page vii - River, to regulate its flow, and to utilize a part of its enormous energy led, first, to investigations by the Reclamation Service of all water storage possibilities ; next, to the Colorado River Compact, a mutual agreement for the protection of the seven basin States ; and, finally, to the adoption of the Boulder Canyon project, as the initial development. The Boulder Canyon Project Act, approved December 21, 1928, authorized a total appropriation of $165,000,000 for the various features involved....