Site Visit Photo File Descriptions.docx
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- Solicitation number
- W912DW21R0033
About this file
This solicitation is for a construction project to replace the intake and tailrace gantry cranes at Chief Joseph Dam Powerhouse in Bridgeport, Washington. The project scope includes design, fabrication, delivery, installation, testing and certification of a new 50-ton intake gantry crane and 18-ton tailrace gantry crane. It also requires modification of the overhead power conductors, removal of the existing cranes, design and fabrication of new lifting beams, structural analysis of supports and bumper stops, and installation of a new wall-mounted conductor system. The expected magnitude of construction costs is between $10-25 million. The solicitation was issued by the U.S. Army Corps of Engineers Seattle District for performance at Chief Joseph Dam. The response due date is not provided.
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Text version
Chief Joseph Dam Intake Crane
1. Long profile.
2. CJ Intake Crane looking east showing BPA transmission proximity, intake gates slots, and power bus poles.
3. Close range emphasis downstream, looking east (towards Spillway) showing three-wire power pole w/ light and rails.
4. Close range emphasis upstream, looking east (towards Spillway) showing crane to three-wire power connections, operator stairs w/ proximity to power cable, downstream BPA Transmission proximity to intact deck, and rails.
5. Close range emphasis mid-deck, looking east (towards Spillway) showing crane to power connectors, rotating hammerhead hoist, operator’s cab, main hoist, machine tool cabinets, and operator access stairs and ladders.
6. Close range emphasis upstream, looking east (towards Spillway) showing rotating hammerhead hoist, operator’s cab, main hoist, machine tool cabinets, and operator access stairs and ladders.
Intake Crane Construction Laydown Area
7. Laydown location noted on Sheet G-0004. Photo showing areal extent.
8. Intake Crane Construction Laydown Area looking southeast noting packed gravel parking areas.
9. Intake Crane Construction Laydown Area looking southeast noting packed gravel parking areas in wider perspective.
10. Intake Crane Construction Laydown Area looking upstream and northeast noting access and fencing.
11. Intake Crane Construction Laydown Area looking southeast noting proximity to WA 17, gravel access road, and fencing.
Intake Crane Power Poles and Guidelines
12. West End terminal power pole showing three anchor guy wires.
13. West end dead end pole and three guy wire anchorage.
14. West dead end pole and anchorage looking east.
15. West dead end pole looking east with rail stop and crane perspective.
16. West dead end pole looking east with power connection and wires.
16a. Power pole close connection perspective.
17. Power pole with light and security camera with BPA transmission tower and intake crane perspective.
18. Power pole with light Looking east (towards spillway).
19. East end dead end pole with rail stop and anchor guy wires.
20. East end dead end pole with security camera and light placement perspective.
21. East anchorage looking west and downstream showing dead end and adjacent pole.
22. East power pole anchorage.
Intake Rail Stops
23. West end downstream rail stop looking east.
24. West end upstream rail stop looking south toward Pearl Hill and the WA 17 access point.
25. West end downstream rail stop looking west; Unit 27.
26. West end downstream rail stop looking east; Unit 27.
27. West end upstream rail stop looking southeast.
28. West end upstream rail stop looking west showing C-Block bend and designated construction/demo area.
29. East end upstream rail stop looking east towards the buttonhook and second designated construction/demo area.
30. East end downstream rail stop looking east towards the spillway; buttonhook and second designated construction/demo area are off photo to the right.
31. Close up east end downstream rail stop and rail end looking west.
32. Close up east end upstream rail stop and rail looking southwest.
Tailrace Crane
33. Upstream side tailrace gantry structure w/ operator’s cab and rails; photo looking downstream.
34. Upstream side tailrace gantry structure w/ operator’s cab, machine house, and opposite side power cable spool; photo looking downstream.
35. Downstream tailrace wall showing existing power connection.
36. Tailrace crane looking west showing wall and new power location.
37. Tailrace crane looking west showing eastside crane profile and lift Tailrace Laydown Area
38. Laydown looking north from Pearl Hill showing access and areal extent.
39. Access looking northwest showing WA17 and Pearl Hill Road intersection.
40. Areal extent looking northwest from the access gate.
41. Entrance looking north showing gravel access road.
42. Areal extent looking northwest
43. Areal extent looking south towards Pearl Hill
44. Areal extent looking south towards access gate
45. Areal looking northeast
46. Delineated areal extent looking northwest from Pearl Hill Road Lifting Beams
47. Main unit Draft Tube Lifting Beam overview
48. Draft Tube Lifting Beam sheave and hook
49. Draft Tube Lifting Beam end view showing guide rollers/shoe carrying guard rail
50. Draft Tube Lifting Beam end view rectangular tubes redeployed
51. Draft Tube Lifting Beam load block sheave
52. Draft Tube Lifting Beam operating mechanism
53. Intake Gate Hoist Lifting Beam overview
54. Intake Gate Hoist Lifting Beam end view auxiliary hoist connection
55. Intake Gate Hoist Lifting Beam top connection to top of cylinder
56. Main Hoist Lifting Beam overview
57. Main Hoist Lifting Beam overview
58. Main Hoist Lifting Beam end view showing rollers and guides
59. Main Hoist Lifting Beam overview showing linkages and closures
60. Main Hoist Lifting Beam overview showing linkages and closures
61. Main Hoist Lifting Beam overview showing linkages and closures
62. Main Hoist Lifting Beam overview showing linkages and closures
63. Main Hoist Lifting Beam overview showing linkages and closures
64. Main Hoist Lifting Beam overview showing linkages and closures
65. Main Hoist Lifting Beam overview showing linkages and closures
66. Main Hoist Lifting Beam overview showing linkages and closures
67. Main Hoist Lifting Beam overview showing linkages for gate connections
68. Main Hoist Lifting Beam overview showing linkages and guide pocket
69. Main Hoist Lifting Beam overview showing linkages and guide pocket from the opposite side
70. Main Hoist Lifting Beam overview showing linkage details
71. Main Hoist Lifting Beam overview showing more linkage details
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