A0002_Att_12_(New)_188-D-60215_Existing_Spillway-Dike_Plan_0002.pdf
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- Attached to
- Hyrum Dam Spillway Replacement
- Solicitation number
- 140R4024R0020
About this file
This document appears to be a plan for the excavation of the existing spillway and construction of a new spillway for the Hyrum Dam Safety of Dams Modifications project. The plan shows the layout of the existing spillway and proposed realignment of the county road. Key details include the removal of the existing concrete spillway structure, construction of a new reinforced concrete spillway, associated mechanical and electrical features, drainage systems, foundation aggregate piers, roadway bridge, gate hoist structure, radial gates, embankment dike, new inverted siphons for irrigation canals, roadway realignment, and excavation and removal of the existing spillway structure. The anticipated performance period for this project is March 2025 through January 2029. The contracting agency is the Department of the Interior Bureau of Reclamation.
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Text version
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46704675
46854685
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Control Point Table
Point #
Northing
471422.48
471517.94
471553.72
471591.62
471569.23
471538.64
Easting
1898648.05
1898534.29
1898470.12
1898487.16
1898557.95
1898731.47
Elevation
4655.33
4655.33
4650.00
4650.00
4655.33
4655.33
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EXISTING SPILLWAY - DIKE
PLAN
DENVER, CO
188-D-60215 1A ut oC
A D
R el
.2 s
8-
D -6
.D W
G
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TO
B
ER
1, 4:
M H
EN
R
IC
K
℄ Existing Spillway
Proposed County Road Re-alignment (Earthworks not shown see note 3)
NOTES
1. See drawings 188-D-60163, 188-D-60164 and 188-D-60165 for existing spillway backfill details downstream of station 2+77.0.
2. Remove existing concrete spillway structure between Sta.
1+07.75 to Sta. 2+77.0.
3. See drawing 188-D-60012 for road alignment.
4. 3H:1V Slope may be locally steepened to match existing ground on abutments.
℄ Cutoff trench
El. 4655.33
El. 4655.33
Inspection well (60033) Toe drain
2H:1V3H:1V
2H:1V 3H:1V
Existing Spillway Sta. 1+82.7
℄ Existing Spillway
Existing Spillway Sta 1+82.7
Existing spillway Sta. 2+77
Existing Spillway Sta. 2+40
3H:1V
℄ Sand cutoff trench
Crest El. 4683.0
25.0' 25.0'
Contour dike slope to match adjacent grade (see note 4)
El. 4671
4H :1
V
3H:1V
3H :1
V
2%
Limits of existing road
Limits of existing road
PLAN - EXCAVATION OF EXISTING SPILLWAY
DESIGNED
DRAWN
CHECKED
TECH. APPR.
APPROVED
ADMIN APPROVAL -
Michael Henrick
Leonel Madrigal
Alex Franceski
PLAN - DIKE
A 60216
B 60216
MATCHLINE 188-D-60XXXMATCHLINE 188-D-60XXX
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