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Placing backfill behind left wall of spillway stilling basin between stations 27+15 and 28+00. Material adjacent to the walls is power-tamped, while the remaining material is rolled.
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Looking across stilling basin from left side at sta. 28+00. Placing backfill behind counterfeited walls in foreground. Refer to Pine R - 239.
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Looking diagonally across spillway stilling basin. Note dumped riprap being placed downstream from sta. 28+00, and dragline trimming slope for riprap.
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Looking upstream along right spillway wall footing fro station 12+00. Showing sewer-pipe drain in place. Note transverse drain connection in foreground.
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Looking downstream in spillway channel from right side at sta. 14+40. Note backfilling operations along right wall.
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Looking upstream along right wall of spillway from sta. 11+44. Note excavation for wall footing. Steep slope is result of widening required for increased width of footing. Drains at edge of footing have not been placed.
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Looking downstream along right spillway wall footing from sta. 12+00. Showing excavation for sewer pipe drain, and gravel for covering pipe.
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Placing backfill behind right wall of spillway gate structure.
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Looking downstream at spillway gate structure from station 3+00, 110 ft. right of centerline (photographic point No. 6). Note forms under construction for piers and counterfeited side walls.
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Foundation for center floor panel of spillway inlet structure, stations 5+29.89 to 5+57.50. This is typical of rock foundation after clean-up.
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Looking upstream at spillway stilling basin from right at sta. 30+50. Refer to Pine R - 220. Showing damage done to finished slopes by heavy rains, which occurred on August 27 and 28. There is about 3 feet of water standing in the stilling basin.
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Looking upstream at spillway stilling basin from right side at sta. 30+50, after water was removed from the floors area. The sub-drainage system became silted up, and it was necessary to remove all pipe and gravel and replace it with clean gravel,
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Looking upstream in spillway stilling basin from right side at sta. 30+50. Note shelters provided to maintain concrete at temperature of at least 50° F. for 72 hours after placing. They are heated with salamanders. Refer to Pine R - 229
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Looking upstream at spillway stilling basin from right side at sta. 30+50. Concrete cut-off wall at sta. 28+00 is in foreground. Note trenches for drains on vertical curve. Refer to Pine R - 205.
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Looking upstream at stilling basin from right side at sta. 30+50. Note backfilling behind left wall. Stilling basin walls are placed to elev. 7541, leaving a 9-foot lift to be placed next season.
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Looking upstream at vertical curve in spillway from right side at station 28+35. Showing damage to slopes caused by heavy rains. Refer to Pine R - 223.
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Concrete placing operations in spillway stilling basin. Looking upstream from right side of spillway at station 30+50. Refer to Pine R - 225.
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Looking upstream in spillway channel from station 10+50. Standards were placed in attempt to show transverse curve of floor.
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Looking downstream in spillway channel from right side at station 8+10. Dragline is placing concrete in wall footing.
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Looking upstream along spillway and outlet channel from point 92 feet right of spillway centerline at station 17+00.