B08 - W912EK26QA054 - Questions and Answers.pdf

W912EK26QA054 – Questions and Answers

Q: Is there a project magnitude range available?

A: Revolutionary FAR Overhaul has removed the magnitude of construction, however, per the old FAR ranges, this would be classified as $25,000 to $100,000.

Q: Any photos, measurements, or drawings of the roofs?

A: Reference drawings attached from previous roof replacement. Contractors should verify all specifications for accurate bidding.

Q: Flat roof? Location of the shingle roof?

A: There is no shingle roof for this requirement.

Q: Roof limits, quantities, and technical documents. Please provide a dimensioned roof plan clearly identifying Roof No. 1 and Roof No. 2 and confirm whether they are adjoining areas on the same structure or roofs on separate structures. Provide each area's dimensions, slopes, elevations, gross square footage, perimeter, coping, wall-flashing, and drip-edge lengths. Also provide available as-built drawings, details, photographs, inspection reports, and prior repair records, or confirm that the PWS and location maps are the complete technical package.

A: Reference drawings attached from previous roof replacement. Contractors should verify all specifications for accurate bidding. Roof #2 is a small lean to roof attached to the rear of the same building.

Q: Existing assemblies, decks, and condition information. Please identify the existing roofing layers and thicknesses at each roof; the concrete-deck construction at Roof No. 1;

and the wood-deck material, thickness, fastening, framing, nailers, fascia, and known deterioration at Roof No. 2. Provide any roof-core, moisture-scan, infrared, structural, or leak-investigation reports and identify known wet insulation or damaged substrates.

A: Reference drawings attached from previous roof replacement. Contractors should verify all specifications for accurate bidding.

Q: Hazardous materials. Has the existing roofing, flashing, sealant, coating, insulation, or other material to be disturbed been tested for asbestos, lead, PCBs, or other hazardous substances? Please provide all surveys and confirm responsibility for testing, abatement, regulated disposal, and resulting schedule impacts.

A: No testing has been conducted.

Q: Missing Roof No. 1 Task 8 and rooftop items. The Roof No. 1 task sequence proceeds from Task 7 to Task 9. Please provide the omitted Task 8 scope or confirm that no Task 8 work is required. Also identify all penetrations, curbs, vents, conduits, antennas, navigation horns, anchors, lightning-protection components, and the fixed ladder that require removal, disconnection, temporary support, modification, flashing, repair, code upgrade, or reinstallation, including trade and outage responsibilities.

A: There is no actual missing task. Task numbering is a clerical error. All work is defined in the tasks provided.

Q: Roof No. 1 complete PVC assembly. Please define the complete Roof No. 1 assembly, including required insulation R-value, total thickness, type, density, and two-layer requirements; vapor-barrier product and installation; the intended 1/2-inch polyiso cover-board product and performance criteria; and acceptable manufacturers, color, reinforcement, attachment, approvals, flashings, and accessories for the 72-mil fully adhered PVC membrane. Confirm the limits and coverage of the required 20-year manufacturer warranty, installer certification, and manufacturer inspections.

A: Provide the insulation in not less than two layers, with joints staggered and offset between layers. Use 2.5-inch and 3-inch polyisocyanurate insulation boards, for a nominal total thickness of 5.5 inches, provided the combined value meets or exceeds R-30

Q: Roof No. 1 tapered insulation, drainage, and coping. Please provide existing deck elevations and the intended drainage layout and confirm responsibility for the tapered-insulation design and engineering. Provide scupper and overflow dimensions and details, including any conductor head, downspout, extension, or masonry modification. Also provide the 22-gauge coping profile, dimensions, attachment, finish, color, joint details, and treatment at the stone wall cap.

A: Reference drawings attached from previous roof replacement. Contractors should verify all specifications for accurate bidding.

Q: Wind-uplift and attachment design. Please provide the governing design wind speed, exposure and risk categories, internal-pressure classification, roof-zone uplift pressures, edge and corner requirements, safety factors, required system approvals or testing, and whether signed or sealed attachment calculations are required for either roofing system.

A: All specifications should meet the manufactures’ warranty standards.

Q: Roof No. 2 standing-seam metal system. Please provide the roof pitch and panel layout and define the required 24-gauge standing-seam system, including acceptable manufacturers, panel width, seam height and type, substrate, clips and spacing, thermal movement, fasteners, closures, low-slope requirements, Kynar/PVDF color and coating criteria, and required material, finish, and weathertightness warranties.

A: Contractors should conduct an onsite inspection for accurate bidding.

Q: Roof No. 2 ice-dam membrane and underlayment. Please clarify whether the specified 'ice dam' means a self-adhered ice-and-water membrane and define its required locations and widths, including whether full-deck coverage is required. Identify the required high-temperature underlayment product and installation requirements beneath the standing-seam panels.

A: Underlayment should cover the entire deck.

Q: Roof No. 2 wood-repair allowance and limits. Please provide a Government-established allowance or estimated quantity for rotten or damaged wood replacement and define whether it includes only sheathing or also rafters, trusses, blocking, nailers, fascia, and wall framing. Provide required materials, thicknesses, grades, treatment, and fasteners. If quantities cannot be established before demolition, confirm the required unit-price basis, Government inspection and approval process, and how work beyond the allowance will be compensated.

A: Contractors are encouraged to conduct an on site inspection prior to bidding for accurate estimates. The PWS states that all damaged/rotten wood shall be replaced in like materials.

Q: Roof No. 2 flashing, edges, drainage, and accessories. Please provide details for the brick-wall base flashing and counterflashing, including height, gauge, termination, sealant, masonry cutting, and masonry repair responsibility. Provide drip-edge and perimeter details and confirm whether gutters, downspouts, splash blocks, snow guards, fascia or soffit repairs, closures, walk pads, fall-protection anchors, lightning-protection work, or other accessories are required.

A: No reference drawings will be provided for roof #2. Contractors should conduct an onsite inspection for accurate bidding.

Q: Roof access, site visit, staging, and hoisting. Will USACE provide an additional pre-bid site visit with roof access so bidders can measure and inspect both roof areas and the spaces below? Please identify approved access routes; vehicle, bridge, dam-crossing, weight, size, and timing restrictions; and available laydown, storage, dumpster, crane, lift, and parking areas. Confirm permitted crane or aerial-lift setup locations, whether barge or marine support or engineered lift plans are required, and whether any Government access or hoisting equipment will be furnished.

A: Contractors should conduct an onsite inspection for accurate bidding. Inspections are open until bidding closes. Approved access is stated in section 10.4. Parking access for vehicles are at the lock site, directly across the lock chamber. Only foot traffic is permitted across the miter gates. Any crane use shall be used on the Illinois side of the dam. Vehicle parking is also permitted at this location. No Government hoisting equipment will be furnished.

Q: Safety, security, work hours, and operational constraints. PWS paragraph 10.5 references a safety section that was not identified in the package. Please provide the complete safety requirements and confirm whether EM 385-1-1 applies, including APP, AHA, SSHO, fall-protection, over-water rescue, debris-containment, and interior-protection requirements. Also provide security and badging procedures and durations, allowable work hours, lock or access restrictions, blackout periods, required operational or navigation-horn outages and notifications, and whether both roof areas may be worked concurrently.

A: EM 385-1-1 applies and will be enforced. See security section following PWS. Working hours or days are not limited. Both roofs can be worked concurrently. Working outside of standard business hours should be discussed with site POC to plan access accordingly.

Q: Performance period and long-lead procurement. SF 1442 requires commencement within 15 days after NTP and completion within 90 days, while Section 00 73 00 lists September 17 through December 17, 2026. Please confirm the controlling start and completion dates and anticipated award/NTP timing. Confirm whether the performance period includes security processing, submittal preparation and Government review, fabrication, manufacturer inspections, punch-list work, and warranty delivery; provide anticipated review durations; and state whether long-lead procurement may begin before NTP or final submittal approval

A: Performance is required to be complete within 90 days of the NTP. Section 00 73 00 will be updated for actual dates once the bonds are received, reviewed and approved, and then a modification will be issued to update the period of performance. The period of performance includes all of the work, inspection, clean up, etc.

Q: Division 01, inspections, compliance, and closeout. Section 01 00 00 contains only a heading. Please provide all intended Division 01 requirements, including submittal, schedule, reporting, quality-control, temporary-facility, environmental, inspection, testing, hold-point, permit, domestic-content, sustainable-product, and closeout requirements.

Confirm the applicable wage classifications for PVC roofing, standing-seam metal, sheet-metal flashings and coping, wood repairs, masonry work, electrical horn work, and hoisting.

A: 010000 is blank. All of the requirements are covered in the solicitation and in the SOW (attached in the solicitation)

Q: Is there a minimum thickness or R rating for the insulation board?

A: Provide the insulation in not less than two layers, with joints staggered and offset between layers. Use 2.5-inch and 3-inch polyisocyanurate insulation boards, for a nominal total thickness of 5.5 inches, provided the combined value meets or exceeds R-30.

Q: Do we need any special insurance for the Army C of E to work above or around the water

A: No special insurance needed.

Q: It will be OK to use the Locks road to get materials and waste off the project to the Illinois side

A: Yes, access we be allowed on the Illinois side of the dam. The road extending from hwy 84 to the dam can be available for use

Q: I would like to suggest that you make the face of the cap longer to cover the joint under the concrete coping stone

A: We will accept the coping to be extended past the joint, but contractors are only required to meet the current specifications of what is currently in place.

Q: Would you be interested in a price for an 60 or 90 mill Black rubber roof, We have not seen much success with PVC roofs

A: No thank you. PVC will be the requirement.