Slide 7 of 19
- If the joint between the two pours is not properly cleaned and prepared, there will be a poor connection between the concrete layers
- The figure shows a failed two-pour joint
- The problem is often discovered after an earthquake causes horizontal sliding between the pours.
- Remedies include installing new vertical rebar dowels to tie the slab to the footing
- These remedies must be designed by an architect or engineer