Specs_for_TWRA_Slide_Gate_Screen.pdf
PDF 104 KB Posted
- Solicitation number
- Event 32801-13963
- Issued by
- Marion County, Tennessee
About this file
This is a specifications document for the Tennessee Wildlife Resources Agency (TWRA) for the fabrication and installation of an intake slide gate and screen system at Lillard's Mill in Marshall County, Tennessee. The project requires the fabrication of a 3-foot by 4-foot stainless-steel slide gate and a 44-inch-wide by 56-inch-tall stainless-steel wedge wire screen with frame, along with all necessary labor, materials, equipment, and field testing for installation. Questions regarding the project are due Monday, August 3, 2026, at 1:00 PM CST, with bids due Tuesday, August 11, 2026, at 1:00 PM CST. Delivery is required sixty days from receipt of purchase order to TWRA Lillard's Mill at 1006 Milltown Road, Lewisburg, Tennessee 37091, to be coordinated with TWRA Representative Bill Forte.
The specifications require all iron, steel, and manufactured products to be sourced and produced in the United States in compliance with the Build America, Buy America Act, with domestically mined components comprising greater than 55 percent of total component costs. The screen panels must be fabricated by Hendrick Screen Company using Type 304 stainless steel with precision-spaced, mechanically interlocked profile bars and welded construction, featuring a 0.375-inch slot opening with 72.8 percent open area, designed for a 12-foot hydraulic differential loading. The contractor must submit shop drawings and design calculations by a registered engineer prior to manufacturing and provide a one-year manufacturing warranty from acceptance. Payment is contingent upon completion and approval by the TWRA Engineering Division, with state payment terms of Net 30 days from invoice date.
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Text version
Specifica�ons for
INTAKE SLIDE GATE & SCREEN
AT TWRA’s LILLARD’S MILL
MARSHALL COUNTY, TN
Scope: The project shall consist of the construc�on of the following.
1. Fabricate a 3-foot x 4-foot stainless-steel slide gate (see Sheet No. 5)
2. Fabricate a 44-inch-wide x 56-inch-tall stainless-steel wedge wire screen with frame (see Sheet No. 5 & EXHIBIT A)
A. Key Dates
1. Ques�ons are due Monday, August 3, 2026, at 1:00 PM CST.
2. Bids are due Tuesday, August 11, 2026 at 1:00 PM CST.
B. Build America, Buy America Act
1. All iron and steel acquired and used in this project shall be developed and acquired in the United States. This includes all manufacturing processes, from the ini�al mel�ng stage through the applica�on of coa�ngs, shall occur in the United States.
2. All manufactured products acquired and used in this project shall be manufactured in the United States, and the cost of its domes�cally mined components shall be greater than 55% of the total costs of all its components unless another standard applies under law or regula�on.
3. All construc�on materials acquired and used in this project shall be manufactured in the United States and all manufacturing processes for these construc�on materials shall occur in the United States.
C. General Guidelines
1. All work shall be in conformance with the specifica�ons noted on Sheet No. 5 and
EXHIBIT A.
2. The contractor shall furnish all labor, materials, equipment and incidentals required to install and field test the slide gate and screen.
3. Submit shop drawings showing compliance with the specifica�ons, including tolerance, prior to manufacturing the gate and screen.
4. Submit design calcula�ons, by a registered ENGINEER, including loading condi�ons, support design, and deflec�on calcula�ons of the stainless-steel screen panels.
5. Manufacturing Warranty Period: One year from acceptance and furnishing TWRA with the items.
D. Stainless Steel Slide Gate
1. The stainless-steel slide gate, stainless-steel wedge wire screen, and stainless-steel hatch shall be delivered to the project site with all stainless-steel bolts and appurtenance as specified on Sheet No. 5 necessary for installa�on.
2. The stainless-steel slide gate shall conform to the specifica�ons as referenced in EXHIBIT A and Sheet No. 5.
E. Profile Bar Pannel Screens & Guide Rails
1. Manufacturer: Hendrick Screen Company, P.O. Box 22075, Owensboro, Kentucky 42304- 2075, (270) 685-5138, fax (270) 685-1729.
2. Screens shall consist of precision spaced, mechanically interlocked profile bars and U-clips with welded frames and supports fabricated from Type 304 stainless steel.
3. Resistance welded construc�on is not acceptable.
4. Wrapped wire construc�on is not acceptable.
5. The screen surface shall be of smooth profile wire of a wedge shape with inwardly enlarging openings to minimize the likelihood of debris entrapment.
6. Screen profile wires shall be con�nuous over the height of each panel as specified herein.
7. Wires shall be welded to the stainless-steel support bars sufficient to withstand the specified loading condi�ons, tolerances, and deflec�on.
8. The wires, supports, backing bars, and framing shall be welded to form a single unit as shown on the drawings.
9. Welds shall be smooth, without burrs or irregulari�es.
10. Wire and Slot: The surface wire shall be Hendrick Screen Co. No. B9 Profile Bar.
a. The screen slot opening shall be .375 inches.
b. The open area for this slot opening shall be 72.8%.
c. Slot size shall be controlled and con�nuously monitored during manufacture.
d. The wire orienta�on shall be ver�cal.
11. Loading: The screen shall be designed for 12 Ft. hydraulic differen�al.
12. Guide Rails: The guide rails shall be laser-fused 304 stainless steel and include gussets and moun�ng holes for anchoring to the face of the structure. The clearance between the guide rails and screen panel must be less than the slot opening of the screen panels.
F. Delivery
1. Delivery date and �me to be coordinated with TWRA Representa�ve Bill Forte at a �me to be determined. His contact informa�on is as follows: Bill.Forte@tn.gov or 615-490- 4341.
2. Loca�on
TWRA LILLARD’S MILL
1006 Milltown Rd Lewisburg, TN 37091 Marshall County
3. Delivery shall be due sixty (60) days from receipt of purchase order.
G. Payments
a. Payment shall not be made un�l all work has been completed and has been approved by the TWRA Engineering Division.
b. Payment can be expected in 30 days from invoice date as the State payment terms are
Net 30.
mailto:Bill.Forte@tn.gov
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