21B0015_AMDT00002_Plans.pdf
PDF 3 MB Posted
- Attached to
- MNA Intake Deck Concrete Beam Rehab Federal contract opportunity
- Solicitation number
- W912EF21B0015
About this file
This document package includes technical specifications and drawings for a federal solicitation to rehabilitate concrete beams on an intake deck at McNary Lock and Dam. The scope of work involves determining the concrete and rebar requirements to enlarge 48 support beams underneath the intake deck to increase load capacity, and constructing the enlarged sections using form and pump methodology with applied pressure during curing. Key details include installing doweled reinforcing bars into existing concrete with epoxy adhesive, achieving minimum 2-inch concrete cover, and submitting conceptual designs for elevated work access and containment suspended from the intake deck or fish channel grating. The solicitation number is W912EF21B0015 and was issued by the U.S. Army Corps of Engineers Walla Walla District for the McNary Lock and Dam located on the Columbia River between Oregon and Washington.
View the file
Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| W912EF21B0015 Bid opening Results 572021.pdf | ||
| W912EF21B0015-0004.pdf | ||
| TechSpec_21B0015_Amend-0004.pdf | ||
| W912EF21B0015-0003 MNA Intake Deck Beam.pdf | ||
| TechSpec_21B0015_Amend-0003.pdf | ||
| W912EF21B0015-0002 -42721.pdf | ||
| TechSpec_21B0015_Amend-0002_27Apr21.pdf | ||
| MNA-Intake Deck Beam 21B0015 Attendee list.pdf | ||
| W912EF21B0015-0001.pdf | ||
| TechSpec_21B0015_Solicitation Final.pdf | ||
| 21B0015_Plans.pdf | ||
| W912EF21B0015 MNA Intake Deck concrete Beam Rehab .pdf |
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POOL ELEVATION RANGE
337.0FT - 340.0FT
INTAKE DECK ELEVATION
361.0 FT
3'-0"
20'-0" VARIESVARIES
BULKHEAD
EXISTING CONCRETE
FROM INTAKE DECK
CONCEPTUAL ACCESS LADDER
CONTAINMENT
WORK ACCESS AND
CONCEPTUAL ELEVATED
DOWNSTREAM CRANE RAIL
( WITH HATCH COVER)
OPERATING GATE SLOT
EMERGENCY GATE SLOT
UPSTREAM CRANE RAIL
CHANNEL GRATING
LADDER FROM FISH
CONCEPTUAL ACCESS
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SCALE: 3/8"=1'-0"
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SCALE: 3/8'=1'-0"
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SCALE: SCALE: 1/4"=1'-0"
SECTION: TYPICAL INTAKE DECK CROSS SECTION
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SECTION: CONCRETE SECTION ENLARGEMENTELEVATION: CONCRETE SECTION ENLARGEMENT
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EPOXY ADHESIVE INTO BEAM
U BARS DOWELED WITH
AT EACH END OF BEAMS
ADHESIVE INTO PIER WALLS
DOWELED WITH EPOXY
BOTTOM REINFORCING
WALLS AT EACH FACE OF BEAM
EPOXY ADHESIVE INTO PIER
SIDE REINFORCING DOWELED WITH
135* HOOKS
U BARS WITH
DOWELED WITH EPOXY ADHESIVE
L-DOWELS WITH 135* HOOKS
ENLARGED SECTION
EXTEND DRAINS THROUGH
TYPICAL
6" MIN - 10" MAX
ENLARGEMENT
U-BOLT WITH MOUNTING PLATE3
NORTH PIER
AT EACH END OF BEAM
ADHESIVE INTO PIER WALLS
DOWELED WITH EPOXY
BOTTOM REINFORCING
WALLS AT EACH FACE OF BEAM
EPOXY ADHESIVE INTO PIER
SIDE REINFORCING DOWELD WITH
INTO SLAB AND BEAM.
DOWELD WITH EPOXY ADHESIVE
U-BAR AND L-DOWEL REINFORCING
SOUTH PIER
GENERAL NOTES
4'0 2' 8'
0 4' 8'2'G-103
REF
SHEET KEYNOTES
EXISTING CONCRETE
LEGEND
SELF-CONSOLIDATING CONCRETE (SCC)
NOTE: GUARDRAILS NOT SHOWN FOR CLARITY. NOTE: GUARDRAILS NOT SHOWN FOR CLARITY.
4'0 2' 8'
THE MINIMUM CLEAR CONCRETE COVER SHALL BE 2 INCHES.13.
NEW STEEL BARS AND EXISTING CONCRETE SURFACES.
A MINIMUM CLEARANCE OF 2 INCHES SHALL BE MAINTAINED BETWEEN ALL 12.
DO NOT CUT OR DAMAGE EXISTING REINFORCING STEEL.11.
(GPR) PRIOR TO DRILLING IN ACCORDANCE WITH SPECIFICATIONS.
LOCATE EXISTING REINFORCING STEEL BY GROUND PENETRATING RADAR 10.
INSTALLATIONS.
(MPII), TO INCLUDE PISTON PLUG SYSTEM FOR HORIZONTAL AND OVERHEAD
FOLLOWING MANUFACTURER'S PUBLISHED INSTALLATION INSTRUCTIONS
ADHESIVE PER SPECIFICATIONS. ALL DOWELED BARS SHALL BE INSTALLED
REINFORCING SHALL BE DOWELED INTO EXISTING CONCRETE USING EPOXY 9.
BETWEEN BARS.
STAGGER ALL LAP SPLICES TO MAINTAIN MINIMUM CLEAR SPACING OF 1 1/4” 8.
ON SHOP DRAWINGS FOR REVIEW AND APPROVAL.
SPLICE IN ACCORDANCE WITH ACI 318. ALL LAP SPLICES SHALL BE SHOWN
WHEN NEEDED, SPLICES SHALL BE MADE USING CLASS B TENSION LAP 7.
CONTAMINATES THAT MAY INTERFERE WITH BONDS.
ALL STEEL BARS AND CONCRETE SURFACES SHALL BE FREE OF ANY 6.
DEFORMED BARS.
ALL REINFORCING STEEL SHALL CONFORM TO ASTM A615, GRADE 60 5.
ACHIEVE A MINIMUM SURFACE AMPLITUDE OF ¼”.
ROUGHEN ALL CONCRETE SURFACES TO RECEIVE ENLARGEMENT TO 4.
FOR PUMPING IN ACCORDANCE WITH SPECIFICATIONS.
WITH MINIMUM 28 DAYS COMPRESSIVE STRENGTH OF 6,000 PSI SUITABLE
CONCRETE MATERIAL SHALL BE SELF-CONSOLIDATING CONCRETE (SCC) 3.
PROCEDURE AS OUTLINED IN SPECIFICATIONS.
PLACEMENT SHOULD BE ACHIEVED USING THE FORM AND PUMP
CORE HOLES THROUGH THE INTAKE DECK ARE NOT PERMITTED. CONCRETE 2.
DETAILS TO MEET THE REQUIRED DEMAND AS OUTLINED IN SPECIFICATIONS.
STRUCTURAL ENGINEER TO DEVELOP THE REQUIRED ENLARGEMENT
CONTRACTOR SHALL ENGAGE A LICENSED PROFESSIONAL ENGINEER OR
ARE A CONCEPTUAL DESIGN ONLY FOR BIDDING PURPOSES. THE
REINFORCING, TRANSVERSE REINFORCING, AND DOWELED EMBEDMENTS,
THE DETAILS SHOWN FOR BEAM ENLARGEMENT, TO INCLUDE LONGITUDINAL 1.
FOR EACH BEAM.
DIMENSIONS. CONTRACTOR TO VERIFY ACTUAL DIMENSIONS IN THE FIELD
REFER TO RESOURCE DRAWINGS FOR AS-CONSTRUCTED BEAM 4.
DIFFERING METALS. LOCATION TO BE VERIFIED IN THE FIELD.
DIRECTLY FROM MILD REINFORCING. PROVIDE ISOLATION FROM THE
CONNECTIONS AT BEAMS 1C AND 8B. DO NOT SUPPORT STAINLESS STEEL
UNDERSIDE OF BEAM TO REPLACE THE EXISTING CAST IN TUGGER
CAST-IN STAINLESS STEEL U-BOLT WITH MOUNTING BRACKET INTO 3.
FROM INTAKE DECK OR FISH CHANNEL GRATING.
CONCEPTUAL ACCESS TO ELEVATED WORK ACCESS AND CONTAINMENT 2.
WORK ACCESS AND CONTAINMENT IN ACCORDANCE WITH SPECIFICATIONS.
FROM THE UNDERSIDE OF THE INTAKE DECK. CONTRACTOR TO SUBMIT
CONCEPTUAL ELEVATED WORK ACCESS AND CONTAINMENT SUSPENDED 1.
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| MN467436aG-002XXX |
| MN467436aR-036XXX |
| MN467436aS-301XXX |
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