Trenton Dam: Constructed 1949-1953 |
From inside the book
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Page 1
... extend to a depth of about 7,000 feet and rest on pre - Cambrian granites . The lowest and oldest for- mation exposed during dam construction was Pierre shale , which at the damsite has a thickness of about 1 , 000 feet . This shale ...
... extend to a depth of about 7,000 feet and rest on pre - Cambrian granites . The lowest and oldest for- mation exposed during dam construction was Pierre shale , which at the damsite has a thickness of about 1 , 000 feet . This shale ...
Page 7
... extending to January 1951 , 49 , 176 linear feet of core drill , water - pressure jet , and hand auger holes were drilled and 316 linear feet of 4- by 6 - foot test pits were excavated . Extensive lab- oratory tests were made for ...
... extending to January 1951 , 49 , 176 linear feet of core drill , water - pressure jet , and hand auger holes were drilled and 316 linear feet of 4- by 6 - foot test pits were excavated . Extensive lab- oratory tests were made for ...
Page 11
... extended to a depth of 70 feet . The soil was classified into three general types : silt with very fine sand ; medium to fine sand with excess silt and small amount of clay ; and medium to fine , silty to fairly clean sand . The soil ...
... extended to a depth of 70 feet . The soil was classified into three general types : silt with very fine sand ; medium to fine sand with excess silt and small amount of clay ; and medium to fine , silty to fairly clean sand . The soil ...
Page 22
... extends from the end of the spillway stilling basin a distance of about 1 mile downstream to the river channel . An irrigation canal outlet structure is located under the embankment in the lower right abutment . This consists of a ...
... extends from the end of the spillway stilling basin a distance of about 1 mile downstream to the river channel . An irrigation canal outlet structure is located under the embankment in the lower right abutment . This consists of a ...
Page 23
... extending into the embankment on each side . The crest structure is ogee shaped with a 1 to 1 upstream slope . Discharge of the spillway is controlled by three 42 - foot - wide by 30 - foot - high radial gates , which are arranged for ...
... extending into the embankment on each side . The crest structure is ogee shaped with a 1 to 1 upstream slope . Discharge of the spillway is controlled by three 42 - foot - wide by 30 - foot - high radial gates , which are arranged for ...
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Common terms and phrases
accessory cut-off trench acre-feet Approach channel Axis backfill Berm blanket Blockout BUREAU OF RECLAMATION canal outlet centerline channel capacity coarse concrete conduit construction Contraction joint Counterweight crushed rock cutoff trench dam embankment designed discharge drain outlet emergency gate chamber Expansion joint Figure Float flood control floor gate structure gravel ground surface Grouted high-pressure gate Highway bridge holes horizontal hydraulic hydrostatic head inlet installed intake structure Limits of special load located loess material maximum Metal Nebr NORTH BORROW AREA Pierre shale piezometer Pipe handrail PROJ Radial gate railroad reinforcement relocation Republican River reservoir water surface riprap River outlet Rolled embankment SCALE OF FEET second-feet SECTION A-A Settlement point Shale surface Sheet SILT silty slope special compaction spillway crest spillway gates spillway structure steel stilling basin Stoplog storage Sump Sump pump surface at elevation surfaces where directed Trashrack structure Trenton Dam upstream vertical walls water surface elevation