Inner Stack Tube Repair

General Stack Lug Relocation Specification:

This specification applies to the following types of trench shields:
3M, 4L, 4M, 6M, 8M, T, E, N, K, and LD

Specifications

• All welding shall be performed according to the Structural Welding Code for Steel - AWS D1.1-90
• A certified welder shall perform all welding.
• 70,000 psi welding rod or wire shall be used to complete the welds.
• The stack Lug shall be manufactured by GME.

Procedure

1. Carefully remove GME stack lug located on the outside vertical, flush to inside face of Trench shield. If the vertical member is damaged during the removal process, contact the factory.
2. Clean the area to be welded thoroughly with a wire brush or grinding wheel.
3. Weld the GME stack lug to the end of the shield centered on outside vertical end member, as shown, usuing a all around 3/16" fillet weld.

Note

In accordance with OSHA regulations, a Registered Professional Engineer must observe and provide written conformation that the above specification has been followed as authorized by the factory or the Tabulated Data will no longer be valid.