Greenhouse Roof Replacement and Rail Replacement

Questions & Answers / Clarifications

This document provides a clarification regarding material specifications for an unspecified opportunity.

• Material Specification: The government has confirmed that 16mm triple wall/x wall polycarbonate panels are acceptable, as an American-made 16mm twin wall product is not available.

This clarification may impact bidders who were planning to source or propose 16mm twin wall panels. Bidders should ensure their proposed materials meet the confirmed 16mm triple wall/x wall specification.

Amendment / Modification

This amendment (0004) to solicitation 1232SA2600438, dated 04/08/2026, is issued to provide responses to Request for Information (RFI) received.

• Item 11: This item applies to amendments of solicitations. The hour and date specified for receipt of offers is extended.

• Item 14: Description of Amendment/Modification: The purpose of this amendment is to provide responses to RFIs received.

• The hour and date for receipt of offers has been extended. Bidders must acknowledge receipt of this amendment prior to the new hour and date specified.

Amendment / Modification

This amendment (0003) to solicitation 1232SA2600438, dated 04/08/2026, is issued to provide responses to Request for Information (RFI) received.

• The solicitation itself is affected by the RFI responses.

• The amendment does not explicitly state if the proposal deadline is extended or not. However, it notes that "FAILURE OF YOUR ACKNOWLEDGEMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER."

• Bidders are instructed to acknowledge receipt of this amendment prior to the specified hour and date for receipt of offers, either by completing Items 8 and 15, returning copies of the amendment, or by separate electronic communication referencing the solicitation and amendment numbers.

Questions & Answers / Clarifications

This document provides clarifications regarding the specifications for glazing panels for an opportunity, addressing vendor inquiries about material thickness, type, and compliance.

• Glazing Thickness: The government confirms that the specification requires 16mm twin wall polycarbonate glazing, not 8mm. The arrows pointing to the 8mm product in a brochure were intended only to show the 16mm product. Bidders should ignore the 8mm specification. The 10-year warranty is desired.
• Material Type: The government confirmed that the 16mm twin wall polycarbonate is an American-made product.
• Acrylic Reference: The reference to a 16mm Acrylite acrylic panel at the end of the 8mm twin wall polycarbonate document was mistakenly included and was only intended as a reference document to show existing conditions. Bidders should ignore this reference.

These clarifications confirm the required material specifications (16mm twin wall polycarbonate, American-made) and eliminate confusion regarding alternative materials or thicknesses. Bidders should ensure their proposals align with the confirmed 16mm twin wall polycarbonate specification and disregard the 8mm and acrylic references.

Form / Attachment / Pricing Sheet

This document provides technical specifications and product information for Makrolon® Polycarbonate Multi Wall Sheets and ACRYLITE® Resist High Impact Acrylic Double-Skin Sheets. It serves as a technical data sheet and guide for potential users and specifiers.

Makrolon® Polycarbonate Multi Wall Sheets:

• Product range details including sheet thickness, type (Twin, Triple, X Wall), weight, light transmission percentages (clear, bronze, opal, HD soft white, blackout), and thermal properties.
• Technical data table with properties like U-value, R-value, thermal expansion coefficient, and fire behavior.
• Special features such as "No Drip" anti-condensate and "IQ Relax" / "IQ Select" for thermal adaptation and light transmission.
• Installation and handling guidance, including cutting, storage, screw attachment, and sheet orientation.
• Loading guidelines for 4' and 6' wide sheets based on purlin spacing and load.
• Fire rating classifications (ASTM E84-01, ASTM D635-74, ASTM D2843-93, ASTM D1929-68).
• Warranty information (10 & 15 Year Non Prorated Warranty).

ACRYLITE® Resist High Impact Acrylic Double-Skin Sheets:

• Technical information on 16 mm sheets, highlighting light transmission, heat insulation, and weather resistance.
• Suitable applications including canopies, skylights, greenhouses, and conservatories.
• Advantages such as UV resistance, anti-algae coating, and protection against UV radiation.
• Warranties: 30-year non-yellowing, 10-year light transmission, and 10-year hail.
• Environmental sustainability features.
• Support spacing chart for flat glazing.

This document is crucial for bidders to understand the material specifications, performance characteristics, installation requirements, and warranty details of the polycarbonate and acrylic sheets. This information is essential for accurately bidding on opportunities that require these materials, ensuring compliance with technical specifications, and understanding potential installation challenges and long-term performance.

Amendment / Modification

This amendment modifies solicitation number 1232SA2600438, originally dated 04/08/2026.

• Bids due date: Changed from 08-MAY-26 to 14-MAY-26.

• Date distributed: Changed from 29-APR-26 to 08-MAY-26.

• The purpose of this amendment is to update the specification for the roofing material.

• The bid due date has been extended to 14-MAY-26.

Amendment / Modification

This amendment (0001) to solicitation 1232SA2600438, dated 04/08/2026, is issued to provide responses to Requests for Information (RFIs) generated from the site visit.

This amendment does not explicitly state which sections of the original solicitation are affected, but it addresses RFIs related to the site visit.

This amendment does not explicitly state if proposal deadlines or requirements were modified. However, it is crucial for offerors to acknowledge receipt of this amendment prior to the specified hour and date for receipt of offers to avoid rejection. Offerors may change their submitted offers if desired, provided the changes are received by the specified deadline and reference this amendment.

Questions & Answers / Clarifications

This document provides responses to vendor questions regarding the Greenhouse Roof Replacement opportunity (Solicitation 1232SA26Q0438).

• Basis of Design (BOD) for Fiberglass Rails: The BOD utilized LP Liberty Pultrusions (West Mifflin, PA; Phone: 412-466-8611; David Griffith, President), referencing quote No. 120925-JMF. Specifications from this quote were included in the bid documents.
• Alternate Rail Materials: USDA will not accept alternate rail materials such as Stainless Steel due to the corrosive nature of the fertilizer used on sugarcane carts.
• Lead Time for Roof Panels: The Period of Performance (POP) will be adjusted to accommodate the 6-week lead time for roof panels.
• Warranty Requirements: Warranty is one (1) year after installation by the installer, plus the manufacturer's warranty on materials.
• Combined Roles: A single individual can fulfill the roles of Superintendent, Quality Control Manager, and SSHO, provided they meet all requirements for each position and are on-site at all times when work is conducted.
• SSHO Exception for Fall Risk: For work at heights of 15 feet or higher or crossing the greenhouse floor, a second qualified SSHO is required on-site to monitor safety and ensure compliance with the Accident Prevention Plan (APP).
• Damaged Ridge Vents: While only two bent ridge frames were visible from the ground, the scope includes adjusting and straightening as many of the 12 bent ridge frames as possible to allow them to close properly. Contractors must note and report any other damaged or bent ridge vents encountered during the work, with photos and locations, for potential future correction.

These clarifications confirm material specifications, adjust the period of performance, define warranty terms, clarify staffing requirements including safety protocols, and provide further detail on the scope of work related to damaged ridge vents. Bidders should review these responses to ensure their proposals accurately reflect these requirements.

Form / Attachment / Pricing Sheet

This document is a General Decision Number (GDN) for wage determination, specifically for Building Construction Projects in Terrebonne County, Louisiana. It outlines the prevailing wage rates and fringe benefits for various construction trades. Bidders should use this information to ensure compliance with labor standards for the specified construction type and location.

• General Decision Number: LA20260046, dated 01/30/2026.
• Construction Type: Building (excluding single-family homes or apartments up to 4 stories).
• Location: Terrebonne County, Louisiana.
• Trades and Rates: Includes wage and fringe rates for Asbestos Worker, Electrician, Power Equipment Operator (Crane), Ironworker, Painter, Cement Mason/Concrete Finisher, Plumber/Pipefitter, Sheet Metal Worker (HVAC Duct Installation), Bricklayer, Carpenter, Laborer (Common/General and Mason Tender), Operator (Backhoe/Excavator/Trackhoe), Roofer, Sheet Metal Worker (excluding HVAC Duct Installation), Tile Setter, and Dump Truck Driver.
• Executive Orders: Notes applicability of Executive Order (EO) 13706 (Paid Sick Leave) and EO 13658 (Minimum Wage) for federal contractors.
• Appeals Process: Outlines the procedure for appealing wage determination decisions.

This document is critical for bidders to understand the minimum wage and fringe benefit requirements for laborers and mechanics employed on the covered construction work. Failure to comply with these prevailing wage rates can lead to contract violations and penalties. Bidders must factor these costs into their proposals to ensure accurate and competitive pricing.

Solicitation / RFP / RFQ

This solicitation is for the Greenhouse Roof Replacement and Rail Replacement project at the USDA Sugarcane Research Site in Schriever, Louisiana. The government intends to make one firm fixed-price award.

• Replacement of greenhouse roofs.

• Replacement of greenhouse rails.

• The roof replacement can begin after the Notice to Proceed (NTP).

• Rail replacement cannot begin until December 2026.

• Contract Type: Firm Fixed-Price.

• Period of Performance: 10 months, broken into two phases.

• Estimated Value: Not specified.

• Proposals are due by 04/29/26 at 0630 AM CST and must be emailed to david.reynolds2@usda.gov.

• A mandatory site visit is scheduled for 04/23/26 at 0900 AM CST. Registration is required by 04/22/26.

• Award will be made to the lowest priced technically acceptable offeror.

• Offers must be valid for 90 calendar days.

• Offerors must provide at least two recent (within 5 years) and relevant references for similar greenhouse renovation projects.

• Competition is set aside for Total Small Business.

• Applicable NAICS code: 236220, Commercial and Industrial Construction.

• Prospective offerors must be registered in the System for Award Management (SAM) at the time of solicitation closing.

• Several attachments are referenced, including Statement of Work, Rail Drawings, Rail Specifications, Roof Specifications, and Wage Determination.

• RFIs are due no later than 4/29/26 at 0630 AM CST.

Statement of Work (SOW) / Performance Work Statement (PWS)

This SOW outlines the requirements for two distinct construction projects at the USDA Sugarcane Research Site in Houma, LA: replacement of a greenhouse roof and replacement of photoperiod rails.

Scope A: Replacement of the Crossing Greenhouse Roof

• Replace existing 16mm double-skinned acrylic roof panels with new impact-modified acrylic panels.
• Remove and dispose of old panels and gaskets; clean metal frames.
• Replace panels in existing ridge and eve vents.
• Repair and adjust alignment of 3 damaged south-side ridge vent drive rods.
• Inspect other ridge and eve vent components, reporting conditions and recommended repairs for future action.
• Provide a water-tight roof.
• Conduct a systematic water test witnessed by government personnel, including JSA, radio communication, and repair of any leaks.
• Panels must meet DIN 5063 for 70% light transmission after 10 years and ASTM D-635 for flammability.
• A one-year warranty on installation for a leak-free roof is required.
• This is an emergency repair, requiring completion as soon as possible.

Scope B: Replacement of Photoperiod Rails

• Remove and replace existing steel rails and fasteners for twelve sugarcane carts.

• Saw-cut and grind approximately 3" x 3" slots adjacent to existing concrete slots.

• Clean concrete for adhesive application.

• Install continuous FRP extrusions (2-part assemblies) for cartwheels.

• Grout an FRP trough into the resized concrete slot.

• Grout a hollow fiberglass rail into the trough using a thin system adhesive.

• Fill the fiberglass rail with 9000 PSI non-shrink epoxy grout.

• Contractor to provide FRP extrusions, adhesive, and epoxy grout.

• Rail replacement must be completed during winter months (December 2026 - March 2027).

• Location: USDA Sugarcame Research Site, 501 Bull Run Road, Houma, LA.

• Scope A: To be completed as soon as possible.

• Scope B: December 2026 - March 2027.

• Submittals are required and must be government-signed off.

• Davis-Bacon wages apply.

• Bid bonds, bid guarantee, and construction payment and performance bonds are required.

• Tentative contract award: Spring 2026.

Form / Attachment / Pricing Sheet

This document provides detailed drawings and specifications for the repair of a "Photometric Bldg Rail" at the USDA Sugarcane Research Laboratory in Houma, LA. It outlines the materials and methods for replacing existing structural fiberglass track rails.

• Drawings: Includes detailed cross-sections and views of the rail installation, showing existing conditions and proposed repairs.
• Materials Specified: Requires 60' structural fiberglass track rail with a minimum 30,000 PSI compressive strength, high-strength epoxy grout (e.g., SIKAGROUT 713 or SIKADUR-42 GROUT-PAK), and polyurethane elastomeric sealant (e.g., SIKAFLEX NP 1 or SIKAFLEX SL 1).
• Installation Requirements: Details surface preparation, setting the rail in a concrete trough, full bearing support with grout, and sealing of exposed top joints.
• Performance Requirements: Emphasizes that the installed rail must be fully supported, true to line and grade, and capable of transferring service loads.

This attachment is crucial for bidders to understand the specific technical requirements for the rail repair work. It dictates the type of materials to be used, the installation methodology, and the expected performance standards. Bidders must ensure their proposals and execution plans align with these detailed specifications.

Form / Attachment / Pricing Sheet

This document provides detailed specifications for Fiberglass Reinforced Polymer (FRP) profiles intended for the Houma Rail Replacement project. It outlines the requirements for two specific FRP profiles (Item 001 and Item 002) and the overall system description.

Item 001: Fiberglass Rail Profile

• Description: 3.504"x2.938" Tall x ½" thick, Hollow Custom rail profile.
• Material: Fiberglass Reinforced Polymer Profile with Polyester resin (Vinyl Ester resin is not recommended).
• Load Support: Must support a wheel load of 900lbs over a 12-inch span.
• Tolerances: Governed by ASTM D3917-15, ASTM D4385-13, LPI, or Print standards.
• Other: Standard color, contractor to verify lengths and lead time.

Item 002: Fiberglass Trough Profile

• Description: 7.875"x3.125”x3.875"x1/8 Fiberglass Trough Profile.
• Material: Fiberglass Reinforced Polymer Profile with Polyester resin.
• Load Support: Must support a wheel load of 900lbs over a 12-inch span.
• Tolerances: Governed by ASTM D3917-15, ASTM D4385-13, LPI, or Print standards.
• Other: Standard color, contractor to verify lengths and lead time.

System Description

• Components: FRP Structural Member (pultruded FRP tube with 1/2-inch thick walls), Epoxy Grout Infill (9,000 psi compressive strength), Support Condition (24-inch thick concrete slab), Adhesive/Sealant Bedding Layer.
• Service Loading: Steel wheel passes over FRP surface twice daily, with a contact stress of approximately 2,000 psi.
• Structural Performance: FRP shell operates at 6-7% of ultimate strength; grout core operates at 20-25% of compressive strength, indicating a substantial margin.
• Environmental Performance (Houma, Louisiana): System is suitable for hot, humid, coastal conditions due to corrosion resistance of FRP and grout. Moisture and temperature stability are noted.

This document is critical for bidders to understand the specific material and performance requirements for the FRP components of the rail system. It details the dimensions, material properties, load-bearing capabilities, and environmental considerations that must be met. Bidders must pay close attention to the specified resin type, load support requirements, and tolerances. The system description provides context on how these components integrate into the overall structure and perform under expected conditions.

Form / Attachment / Pricing Sheet

This document contains detailed architectural and structural drawings for the Sugarcane Research Laboratory's "Crossing Facility" greenhouse, including specifications for materials, dimensions, and construction. It also includes a "Shop Drawing Review" for the "Greenhouse Vent System Resubmittal," checking design concept and compliance with contract documents.

• Architectural & Structural Drawings: Site plan, greenhouse structure and glazing details (trusses, purlins, tempered glass, 16mm white acrylic), ventilation systems (ridge and side vents), wall sections, and structural details.
• Material Specifications: Technical data for "DEGLAS IMPACT SDP® 16 NO DRIP®" acrylic sheets and "Thermolite™" insulated ACM panels, including properties like light transmittance, R-value, and fire ratings.
• Installation Guidelines: Instructions for storage, cutting, fastening, and installation of glazing materials.
• Vent System Review: Specific notes on "Totally Enclosed" motors, NEMA 4 electrical boxes, and outdoor installation certification. The review is marked as "Reviewed and Accepted as noted."

This document is critical for bidders involved in the construction or renovation of the greenhouse facility. It defines exact specifications for materials, structural integrity, and aesthetic requirements. Bidders must review these drawings and specifications to ensure their proposals and work align with the government's requirements for the greenhouse construction, including specific glazing types, structural components, and installation methods. Bidders involved in mechanical or electrical aspects of the ventilation system should note the specific requirements and review status for compliance.