Purchase Description for STS Screen Mesh.pdf
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- Solicitation number
- W9127N25Q0039
About this file
This document is a Section C Specifications file detailing technical requirements for Polyester "STS" (Stationary Traveling Screen) Complete Panels and Patch Panels for the U.S. Army Corps of Engineers. The specifications outline precise manufacturing requirements for mesh panels, including a 5.8 mesh construction using .039" diameter monofilament from polyester or PBT materials, with specific dimensional tolerances of 95 1/4" width X 131 1/4" length for complete panels and 95 1/4" width X 17 1/2" length for patch panels. Critical technical specifications include a minimum tensile strength of 80 pounds per monofilament, heat setting at 360 degrees Fahrenheit, and protective polyurethane edging with a temperature range of -10 to +200 degrees Fahrenheit.
Delivery instructions specify shipment to the John Day Dam Project in Rufus, Oregon, with warehouse acceptance limited to Monday through Thursday from 7:00am to 4:00pm, excluding federal holidays. This specification document is part of Solicitation W9127N25Q0039, a small business set-aside procurement under NAICS Code 333998 for 52 STS Screen Mesh Fish Rolls, with the U.S. Army Corps of Engineers Portland District as the contracting agency. Prospective vendors must be registered in the System for Award Management (SAM) and submit technical specifications and pricing for evaluation, with quotes valid for 30 days from the solicitation close date.
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| File | Type | Posted |
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| CombinedSynopsisSolicitation 25Q0039.pdf |
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Text version
SECTION C
SPECIFICATIONS
POLYESTER “STS” (STATIONARY TRAVELING SCREEN) COMPLETE PANELS &
PATCH PANELS
1.0 General Specifications
Both STS panels shall be of a 5.8 mesh construction woven entirely from .039” diameter monofilament. The monofilament, which shall be a chemically enhanced derivative of the polyester family of fibers, must be clear/translucent to facilitate the alignment of the mesh panel with the holes on the link bar, and is to be free from TiO2 (titanium dioxide). The monofilament must be produced with an additive to prevent any occurrences of metal activated degradation.
The monofilament also must possess the characteristics of high molecular weight along with generally superior abrasion, hydrolysis and chemical resistance.
The complete STS panel material can be a clear PBT (Poly Butylenes Terephthalate) or Polyester, LS3000 monofilament, both materials are acceptable. The complete STS panels shall be sized at 95 1/4” width (+-1/8”) X 131 1/4” length (+-1/4”) with 3” wide edge at top and bottom (+-1/8”), and 2” wide edge at sides (+- 1/8”) when in free state, as spread on the floor, per the specifications outlined in drawing JDP-5.1-3-4/36.
The patch STS panel material can be a clear PBT (Poly Butylenes Terephthalate) or Polyester, LS3000 monofilament, both materials are acceptable. The patch STS panels shall be sized at 95 1/4” width (+-1/8”) X 17 ½” length (+-1/4”) with 2” wide edges all the way around the entire panel.
Both finished STS panels shall have a distinct crimp of equal size in both the warp and fill directions and the fabric must be flat, free from pucker or blister. The monofilaments shall be free from abrasion or other damage. The panels shall not have selvage edges. All strands shall run the full length and full width of the panel without splicing.
1.1 Strength
Each monofilament shall have a minimum tensile strength of 80 pounds and minimum elongation at break of 30 percent. The material shall be suitable for use in cold water and shall be “heat set” at a minimum of 360 degrees Fahrenheit so that it will be dimensionally stable when subjected to temperatures of 200 degrees Fahrenheit. It shall also be heat set at an adequate tension to provide dimensional stability at ambient temperatures.
1.2 Screen Edge Protection
The entire edged perimeter of both STS panels shall be protected with polyurethane or another approved equal material. The protective edging shall have a useable temperature range of -10 to +200 degrees Fahrenheit.
The selected polyurethane shall be completely bonded through the mesh to offer equal protection on both sides of the STS panel. The perimeter of the protective polyurethane edging must not be subject to peeling, flaking, delamination or separation by any means.
2.0 Delivery Instructions
Vendor shall deliver the finished product to the following address:
Attn: Blaise Jones John Day Dam Project Interstate 84, Exit 109 Rufus, OR 97050
Days and hours warehouse deliveries are accepted Monday – Thursday 7:00am to 4:00pm. Please note: the warehouse will be closed on any Federal Holidays.
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