SOW Specs Drawings CHE Lock Upper Gate Seals.docx

Cheatham Lock Upper Miter Gate Seals Scope of Work, Specifications, and Drawings 01- Scope of Work Background:

The Army Corps of Engineers will be performing standard maintenance at Cheatham Lock during the lock’s FY22 maintenance window to include the Upper Miter Gate Seals. The current seals have not been replaced in several years, and while no problems have occurred due to Miter Gate seal functionality, the FY22 maintenance window provides an opportune time to replace the current seals.

Scope of Work:

Contractor shall provide all labor, materials, supervision, and quality control necessary to fabricate, supply, and deliver the Cheatham Lock Upper Miter Gate Seals listed in Table 1 – List of Upper Miter Gate Seals. All products will be fabricated and supplied in the quantities specified by Table 1 and in accordance with the requirements and dimensions provided in Section 08 – Specifications and Section 09 - Drawings.

Table 1 - List of Upper Miter Gate Seals

Delivery:

Delivery shall be made Monday-Thursday, excluding Federal Holidays, between 8:00 A.M. and 3:00 P.M. Contact information for coordination of delivery is listed below.

Contractor shall deliver all supplies under this contract within 120 days after receipt of order to:

US Army Corps of Engineers Attn: Bobby Holt Bobby.J.Holt@usace.army.mil; (615) 792-0627 Cheatham Lock 1799 Cheatham Dam Road Ashland City, TN 37015 Invoice and Payment:

Invoices shall be emailed to all POCs listed below for processing. No payment will be made until all parts called for under this contract have been delivered, verified, and accepted by the Government.

POCs Tommy Mason: Thomas.W.Mason@usace.army.mil Brad Collins: Brad.H.Collins@usace.army.mil

08 – Specifications Minimum Rubber Specifications:

All seals shall be straight, continuous section lengths as specified in Table 1. All seals shall be formed or vulcanized rubber. All rubber shall meet or exceed the physical requirements listed in Table 2 – Rubber Physical Requirements. Material certifications will be provided with the shipment to reflect compliance with the complete list of physical characteristics shown in Table 2.

All seals shall be supplied without bolt holes.

Seals shall be shipped and delivered in wooden crate(s) to protect their shape and ensure their usability.

Table 2- Rubber Physical Requirements

Durometer Hardness (Shore Type A)

Tensile Strength (after aging 48 hrs)

Upper Miter Gate Seal Physical Descriptions Miter Seal – See Figure 1 of Section 09 for clarification, Figure not to scale. Miter Seal shall be “J-Seal” Type with the following cross-sectional requirements. The seal’s circular “bulb” shall be 2 & 3/4” diameter. The transition from the seals stem to the bulb shall be radiused to ensure a smooth transition. The seal’s stem shall be 1” thick. The seal’s length (distance from the end of the outer edge of the stem to the outer edge of the bulb) shall be 7”.

Quoin Seal 1 – See Figure 2 of Section 09 for clarification, Figure not to scale. Quoin Seal 1 shall be “Hat Seal” Type per Huntington Mold No. 3677-A and the following adjustments to a standard Huntington Mold NO. 3677-A: The overall length shall be 8” (down from 10”) from the outer edge of the left tail to the outer edge of the right tail. The seal shall be symmetrical about its centerline (i.e. 4” from center to the outer edge of each tail, instead of 5” for the same dimension).

Quoin Seal 2 – See Figure 3 of Section 09 for clarification, Figure not to scale. Quoin Seal 2 shall be shaped per Figure 3 and the following description. The seal shall resemble a C-Shape and shall be 7 & 3/8” from the outermost edge of the legs to the outer edge of the connecting length. The seal shall be 8” wide as measured from the outside edge of one leg to the outside edge of the opposite leg. Each leg of the seal shall be 1/2" thick with a 5” space between the opposing innermost edges of each leg.

Sill Seal – See Figure 4 of Section 09 for clarification, Figure not to scale. Sill Seal shall be “J-Seal” Type with a hollow bulb and the following cross-sectional requirements. The seal’s circular “bulb” shall be 2 & 3/4” diameter. The bulb shall have a 1/2" diameter hole throughout. The hole shall be concentric to the bulb. The transition from the seals stem to the bulb shall be radiused to ensure a smooth transition. The seal’s stem shall be 1” thick. Th seal’s length (distance from the end of the outer edge of the stem to the outer edge of the bulb) shall be 7”.

09 – Drawings

Figure 1 – Miter Seal Cross Section

Figure 2 – Quoin Seal 1 Cross Section

Figure 3 – Quoin Seal 2 Cross Section

Figure 4 – Sill Seal Cross Section image1.png image2.png image3.png image4.png