Amendment 0003 LD7OD_C-305.pdf
PDF 218 KB Posted
- Attached to
- Lock & Dam 7 Outdraft Modification
- Solicitation number
- W912ES25BA001
About this file
The document is a technical drawing (Sheet C-305) depicting typical cross-sections for the Lock & Dam 7 Outdraft Modification project located in La Crescent, Minnesota. The drawing contains three detailed cross-sectional views at different station points (D 8+58.48 to D 9+42), illustrating the proposed modifications to the existing lock and dam structure. Key technical details include varying slopes (1V:3H and 1V:4H), existing and excavation grades, a dog-leg weir, and scour protection with a minimum 45-inch thick riprap layer. The cross-sections show the current elevation of 638.45 and the existing weir elevation at 630.45, with proposed changes to improve navigation efficiency and structural integrity.
The drawing is part of the solicitation W912ES25BA001 for the U.S. Army Corps of Engineers St. Paul District, which is a 100% small business set-aside contract valued between $5 million and $10 million. The project scope involves constructing a mooring cell and mooring dolphin, with the NAICS code 237990 and a small business size standard of $45 million. The technical drawing provides detailed engineering specifications for contractors bidding on this navigation infrastructure improvement project.
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Text version
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CL
1V:3H BELOW
EL. VARIES
1V:4H ABOVE
1V:3H BELOW
EL. VARIES
1V:4H ABOVE
DOG-LEG WEIR
RIPRAP;
EXISTING GRADE
EL. 638.45
LCP
EXISTING WEIR
1V:
3H
EL. 630.45
SCOUR PROTECTION
MIN. 45" THICK RIPRAP;
D 9+00
-140 -120 -100 -80 -60 -40 -20 0 20 40 60 80 100
580 580
600 600
620 620
640 640
660 660
EXISTING GRADE
EL. 638.45
LCP
EXCAVATION GRADE
EXISTING WEIR
SCOUR PROTECTION
MIN. 45" THICK RIPRAP;
EL. 630.45
1V:
3H
1V:3H BELOW
EL. VARIES
SLOPE VARIES ABOVESLOPE VARIES BELOW
EL. VARIES
SLOPE VARIES ABOVE
CL
DOG-LEG WEIR
RIPRAP;
D 9+25
1V:3H
-140 -120 -100 -80 -60 -40 -20 0 20 40 60 80 100
580 580
600 600
620 620
640 640
660 660
CL
EXISTING GRADE
EL. 638.45
LCP
1V:
3H
1V:3H BELOW
EL. VARIES
SLOPE VARIES ABOVESLOPE VARIES BELOW
EL. VARIES
SLOPE VARIES ABOVE
SCOUR PROTECTION
MIN. 45" THICK RIPRAP;
DOG-LEG WEIR
RIPRAP;
EXISTING WEIR
EL. VARIES
EXCAVATION GRADE
1V:
3H
SLOPE VARIES
D 9+35
-140 -120 -100 -80 -60 -40 -20 0 20 40 60 80 100
580 580
600 600
620 620
640 640
660 660
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