Damaged bulkheads often take a permanent set which is independent of the panting or bulge caused by water pressure. To control this，you should（）.
- Ainstall shoring so the shoring supports the damaged bulkheads without pushing on them
- Binstall shoring so that it pushes on the damaged bulkhead while supporting it
- Cuse jacks or chain falls to remove the set before installing shores
- Dplace sandbags by the bulkhead without installing shore