Lillards_Mill_Slide_Gate_Screen.pdf

Specifica�ons for

INTAKE SLIDE GATE & SCREEN

AT TWRA’s LILLARD’S MILL

MARSHALL COUNTY, TN

32801-13963

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 10, 2026, at 1:00 PM CST.

2. Bids are due Tuesday, August 18, 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.

mailto:Bill.Forte@tn.gov

b. Payment can be expected in 30 days from invoice date as the State payment terms are Net 30.