Steel waler frames are more suitable for very deep excavations, or where there are heavy ground loadings and a large access bay is required. Normally only two cylinders are used in the waling frame, and their position can be altered to suit access required and the ground load anticipated. The rails are only 100mm wide, enabling the excavation width to be kept to a minimum and limit the amount of backfill material required.
- Used in heavier ground
- Minimal excavation width
- Large access bay
