Amendment 4 - Solitication K00R2600137 - Addendum 4.pdf
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- Solicitation number
- BPM033893
- Issued by
- Maryland
About this file
This document is an addendum to Solicitation K00R2600137 issued by the Maryland Department of Natural Resources (DNR) for barge modifications, recommended repairs, and required maintenance services. The solicitation covers sand/steel, grit/wet blasting, modifying, repairing, and restoration of three steel spud utility deck barges - Baltimore, Cambridge, and Chesapeake. The addendum provides detailed responses to questions related to the scope of work, including specific dimensions for rub rail replacements, steel plate replacements, coaming repairs, deck and hatch replacements, and other related work. The contractor is not responsible for replacing winches, cables, generators, or hydraulic lines. All fleeting and transportation of the barges will be handled by the Maryland DNR. The solicitation requires services to be completed within a defined timeline, but does not specify the contract term or renewal options.
The solicitation does not provide details on pricing terms, set asides, incumbents, funding sources, or amounts. Interested contractors must review the full solicitation package to understand the complete requirements and submit a responsive proposal by the due date.
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eMaryland Marketplace
SOLICITATION K00R2600137
ADDENDUM NO. 3
December 16, 2022
Responses to Questions Received
BARGE BALTIMORE
1. Item 2 in Survey recommendations. Please specify dimensions for Stbd. lower rub rail repair.
RESPONSE: Replace entire starboard rub-rail, which is approximately 50-feet long by 7-inches in height of new Schedule (80) split pipe half round steel. Taper both forward and aft rub-rail split pipe half round steel ends and fare at 45-degrees back into barge sides.
2. Item 4c in Survey recommendations. Please specify dimensions for steel that will need to be replaced.
RESPONSE: Replace approximately 58-feet long by 18-inches in height below the lower rub-rail of the barges starboard and port sides down to the top of rounded chine. Replace 24-feet across by 4-feet from top of forward lower rounded chine (bow). Replace 24-feet across by 4-fFeet from top of aft lower rounded chine (stern.) All steel chines below the waterline are to be replaced, meaning forward (bow), starboard and port sides, plus the aft (stern) area also.
Replace entire barge hull (bottom) and weld into new chines. Steel plate of 0.250 thickness is to be used pertaining to Item 4c recommendation(s).
3. Item 6 in Survey recommendations. Please provide dimensions of steel plate that needs to be replaced.
RESPONSE: Cancel repair of all top rub-rail corners (4).
4. Item 7 in Survey recommendations. Is contractor responsible for replacing cables on winches?
RESPONSE: No, contractor is not responsible.
5. Item 8 in Survey recommendations. Please specify repair needed on spud.
RESPONSE: Cancel repair of spuds, sand blasting of spuds and painting of spuds.
6. Item 10 in Survey recommendations. Please specify dimensions of coaming repairs desired.
RESPONSE: Correct all bent top flat capping of 30-inch tall waist collar. Patch with steel plate of 0.250 Thickness on the starboard top flat cap deformed areas (3). The areas measure 3-inches by 3-inches, 1.5-inches by 2.5-inches and 4-inches by 2.5-inches. Remove all forward deck tabs (4), each measuring approximately 12-inches by 3-inches. Refer to attached images titled “Barge Baltimore Starboard Top Flat Cap of Waist Collar Deformities and Forward Deck Tabs Images.”
BARGE CAMBRIDGE
7. Item 5 in Survey recommendations. Please provide dimensions for deck replacements around coaming needed.
RESPONSE: Remove waist collar (coaming) and top deck. Replace top deck with new
3.75 plate steel approximately 80-feet long by 26-feet wide. Fixed hydraulic lines under aft deck between diesel hydraulic pump cabinet and starboard, plus port hydraulic spud which motors do not need to be replaced. Contractor is not responsible for new hydraulic lines or installation of new hydraulic lines. Steel battery box and steel cover are to be permanently removed. Contactor is not responsible for replacing a new battery box. All vents, horned bits, deck buttons are to be removed, repaired and re-welded back to top deck in original order using new steel plate 0.025 thickness for bases.
8. Item 6 in Survey recommendations. Please provide dimensions for new vertical bracing and coaming replacement.
RESPONSE: Using new 0.250 steel plate refabricate waist collar (coaming) as follows:
Waist collar starboard and port length 63-feet long each side.
Waist collar height 30-inches Waist collar width 20-feet across between starboard and port interior sides.
Top flat cap of waist collar 4-inches, of which 3.75-inches to overhang outboard sides using steel plate 0.250 thickness.
Outboard waist collar support knees will be 3.75-inches in top depth by 12-inches in bottom depth by 30-inches in height and spaced at 4-foot centers. There shall be four (4) limber holes spaced evenly on bottom of the waist collar starboard and port sides measuring 6-inches long and 3-inches tall. On the aft waist collar, three
(3) limber holes shall be placed on the starboard and port ends and single in the center measuring 12-inches long. The outboard waist collar support knees 3.75-inch top depth shall be welded underneath to the bottom side of the top flat cap outboard overhang.
9. Item 7 in Survey recommendations. Please provide dimensions.
RESPONSE: Relocate new forward 18-inch BAIR HATCH Part Number BFHR 18 new
20.75-inches round galvanized steel deck ring in line with other starboard barge hatches.
Approximately to be fitted 8-feet aft of forward rake and 35-inches inboard of starboard barge side. The new round galvanized steel deck ring will be welded flush to top deck and be near the first frame set and forward collision bulkhead. Steel U-shaped round bar 12-inch by one (1) ladder rung diameter are to be welded to collision bulkhead spaced evenly with the main rung being 8-inches out from the collision bulkhead.
10. Item 8 in Survey recommendations. Please provide dimensions for steel replacement or clad weld.
RESPONSE: Weld 2-inch by 2-inch overlay covering holes on starboard side of aft rake.
11. Item 17 in Survey recommendations. Please provide dimensions for rub rail replacements.
RESPONSE: Cancel. Contractor not responsible to repair dented rub-rails or the four (4) corners.
BARGE CHESAPEAKE
12. Item a in Survey recommendations. Please provide dimensions for clad welds or steel replacements.
RESPONSE: Starboard side contains approximately forty (40) pitted rust blooms, which are different shapes and sizes. A welded 2-inch by 2-inch clad/overlay is sufficient. Welds are to be ground/feathered even to steel hull plate.
13. Item b in Survey recommendations. Is contractor responsible for replacing winch cables?
RESPONSE: No, contractor is not responsible.
14. Item e in Survey recommendations. Is contractor responsible for generator and winch motor repairs? If so, please specify repair plan.
RESPONSE: No, contractor is not responsible.
15. Item n in Survey recommendations. Please specify clad weld or steel replacement, and quantity.
RESPONSE: On the port side, top of the lower rub-rail starting at the forward rake (bow) measure back 47-feet in length by 2-feet in height. This hull side strip is to be replaced with new 0.250 steel plate.
GENERAL QUESTIONS:
16. Is contractor responsible for providing new winches?
RESPONSE: No, contractor is not responsible.
17. Is fleeting required on any of the barges?
RESPONSE: All fleeting/transport will be conducted by Maryland DNR and scheduled with the contractor start and completion dates with supporting adequate notification.
Maryland DNR / IFB NUMBER: K00R2600137 – December 15, 2022
Barge: BALTIMORE
Starboard Top Flat Cap of Waist Collar Deformities and Forward
Deck Tabs Images
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| Solitication K00R2600137 - Addendum 3 |
| Solitication K00R2600137 - Addendum 1 |
| Barge Baltimore Images_12.15.2022 |
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