LD679MG_HI_S-201xxx.pdf
PDF 603 KB Posted
- Attached to
- Fabrication of New Miter Gates for LD 6, 7 & 9
- Solicitation number
- W912ES22B0004
About this file
This document contains a federal solicitation and related engineering drawings. The solicitation requests bids to fabricate and deliver replacement miter gates, ancillary equipment, and dispose of existing gates for three locks and dams on the Upper Mississippi River. Key requirements include fabricating, testing, painting, prestressing and delivering new lock chamber miter gate assemblies for Locks and Dams 6, 7, and 9 near St. Paul, Minnesota, as well as retrieving and disposing of old gates. Lock and Dam 6 work constitutes the firm-fixed price contract, while Locks 7 and 9 are option items exercisable within one year. The U.S. Army Corps of Engineers district in St. Paul is the contracting agency. Bids are due by small businesses only under NAICS code 332312 with size standard of 500 employees. The engineering drawings provide specifications for constructing new walkways and grating around the lock chambers.
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Text version
%PRODUCTION DATA 4%%PRODUCTION DATA 3%%PRODUCTION DATA 2%
%PRODUCTION DATA 1%
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SCALE: 3/8" = 1'-0"
SCALE: 3/8" = 1'-0"
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PLAN - WALKWAY
ELEVATION - DOWNSTREAM
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40'-9 3/8 "
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5'-4 9/16 " 3'-7 5/8 "4'-5 3/4 "4'-10"4'-10"4'-10"4'-10"9'-8"2'-1"5'-7"2'-0"4'-10"4'-10"
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SEE DETAIL D1
OF GRATING)
FLUSH WITH TOP
L4X4X1/2 (CUT
IN CONCRETE WALKWAY
EMBEDDED ANGLE
SUPPORTED BY
THIS EDGE TO BE
(TYP)
L8X4X5/8
L4X4X1/2 (TYP)
STIFFENER (TYP)
L4X4X1/2 CENTER
L4X4X1/2
(TYP)
L4X4X1/2
(TYP)
L4X4X1/2
(TYP)
L3X3X1/4
(TYP)
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(TYP)
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SUPPORT L4X4X1/2
AND HORIZONTAL
EACH VERTICAL
WEEP HOLES AT
WALKWAY
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1/2 " GAP JOINT
COUPLER
HANDRAIL
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PL. 3/4" GIRDER
TYP.
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PIPE (TYP)
SCHEDULE 80
T6 ALUM. ALLOY
STD. ASTM 6063
2" NOM. DIA.
SLIP-ON CONNECTIONS
PIPE WITH ALUM.
ALLOY SCHEDULE 80
ASTM 6063 T6 ALUM.
2" NOM. DIA. STD.
SLIP-ON CONNECTIONS
PIPE WITH ALUM.
ALLOY SCHEDULE 80
ASTM 6063 T6 ALUM.
2" NOM. DIA. STD.
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SHEET ID
®of Engineers
US Army Corps
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GRATING
TOP OF
4'0 2' 8'
4'0 2' 8'
POSTS BOLTED TO QUOIN SIDE OF TRANSVERSE STIFFENERS.2.
GRATING NOT SHOWN FOR CLARITY.1.
NOTE:
QUOIN
DOWNSTREAM
UPSTREAM
MITER
QUOIN MITER
QUOIN WALKWAY MITER WALKWAY
GUDGEON PIN C/L
C B
C B
C B
C B
C B
C B
C B
C B
C B
C B
C/L TOP GIRDER
MINIMUM WIDTH OF GRATING PANELS SHALL BE 2'-0".
GRATING BEARING BARS SHALL SPAN BETWEEN L8x4x5/8'S. 4.
GRATING SHALL BE STEEL IN ACCORDANCE WITH NAAMM MBG 531.3.
FRAMES.
CB = LOCATIONS OF CROSS BRACING ON WALKWAY SUPPORT2.
CONFORMING TO ASTM A709 GRADE 50.
WALKWAY FRAMING SHALL BE OF STRUCTURAL STEEL 1.
NOTES:
PRIOR TO GALVANIZING
- ALL RAW EDGES SHALL BE BANDED BY MANUFACTURER
- CROSS BARS SPACED 4" O.C.
- BEARING BARS 1 1/2"X3/16" SPACED 1 3/16" O.C.
- GALVANIZED AFTER FABRICATION
- WELDED STEEL BAR TYPE
GRATING SHALL HAVE THE FOLLOWING CHARACTERISTICS:5.
10. HANDRAIL FITTING DETAILS SHOWN ON SHEET S-209.
WHERE SPECIFIED.
EXTERNAL HANDRAIL CONNECTIONS USED EXCEPT 9.
ASTM 6063 T6 ALUMINUM ALLOY SCHEDULE 80 PIPE (TYP).
HANDRAIL IS TO BE 2" NOMINAL DIAMETER STANDARD,8.
TYPE CONNECTION TO WALKWAY ANGLES.
GRATING CLIPS SHALL BE SADDLE TYPE WITH CLAMP 7.
ASTM A123, MINIMUM GRADE 85.
GALVANIZED AFTER FABRICATION IN ACCORDANCE WITH
ALL WALKWAY FRAMING AND GRATING SHALL BE HOT DIP 6.
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