Top Tube Repair

General Tube Repair Specification:

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

4L, 4M, N, E C5 x 9 CHANNEL
6M, 6H, K C7 x 12.5 CHANNEL
8M, 8H, LD C9 x 15 CHANNEL
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.
  • C-Channel shall be Fy=50ksi material.
Procedure
  1. Inspect tube make sure tube can be capped or formed back in place. If skin plate is damaged, consult factory.
  2. Determine length of the channel required. Overlap damaged area by a minium of six inches on each end.
  3. Weld channel to damaged tube using a continuous 3/16" fillet weld as shown.

Top Tube Repair

 
 
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