Dams and Control Works, Volume 2U.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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Page 51
These conduits extend to within 10 feet of the top of the dam and convey the
seepage to the inspection gallery. The inspection gallery is located 25 feet from
the upstream face of the dam, and follows the profile of the natural ground
surface.
These conduits extend to within 10 feet of the top of the dam and convey the
seepage to the inspection gallery. The inspection gallery is located 25 feet from
the upstream face of the dam, and follows the profile of the natural ground
surface.
Page 108
The axis of the dam was located somewhat parallel to the upstream face of the
terrace and at such distance that the cut-off trench, extending to bedrock, would
lie largely in the river bottom without increasing the cut-off trench excavation or ...
The axis of the dam was located somewhat parallel to the upstream face of the
terrace and at such distance that the cut-off trench, extending to bedrock, would
lie largely in the river bottom without increasing the cut-off trench excavation or ...
Page 109
Sections of vertical side trench, 2% feet in width, located in the center of a smaller
open cut and extending 1.5 feet into bedrock, were excavated at both abutments
where the previous layer was relatively thin and where bedrock occurred at a ...
Sections of vertical side trench, 2% feet in width, located in the center of a smaller
open cut and extending 1.5 feet into bedrock, were excavated at both abutments
where the previous layer was relatively thin and where bedrock occurred at a ...
Page 130
height of 40 feet, was constructed from the north abutment of the main dam
parallel to a natural ridge extending in a northeasterly direction from the dam.
The section of the main dike is 30 feet wide on top. It has a 3:1 upstream slope,
covered ...
height of 40 feet, was constructed from the north abutment of the main dam
parallel to a natural ridge extending in a northeasterly direction from the dam.
The section of the main dike is 30 feet wide on top. It has a 3:1 upstream slope,
covered ...
Page 198
The hoist consists of a central dual drive unit, from which three vertically aligned
pairs of drive shafts extend radially in a horizontal plane to three dual hoisting
units spaced 120° apart circumferen- tially. Each of the three radially extending ...
The hoist consists of a central dual drive unit, from which three vertically aligned
pairs of drive shafts extend radially in a horizontal plane to three dual hoisting
units spaced 120° apart circumferen- tially. Each of the three radially extending ...
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abutment aggregate All-American Canal approximately arch average base bottom Boulder Dam built Bureau canal cantilever canyon capacity carried cement centers chamber channel closed completed concrete connected consisted construction contract cooling cost crest cubic yards cut-off depth designed developed diameter discharge diversion downstream drilled earth effects elevation embankment Engineering excavation extending face feet Figure floor flow forms foundation gallery gates gravel gravity grout head height holes horizontal inches installed joints length load located lower material maximum method miles mixing needle valves obtained operating outlet pipe placed plant portion pounds pressure pump radial reinforced removed reservoir river rock roller sand shaft side slope spillway square steel storage stream stresses structure supply surface temperature tests thickness tion tower tunnel Unit upper upstream varying vertical wall wide