A contractor is facing a problem with elevator pit slab poured. The slab was poured 10" higher and now he need to remediate that problem. Also note that the pit wall is already poured & 3 story cmu elevator chase wall constructed on top of the wall.
What's the best to fix that problem without...
Can someone help on the followings:
1) The procedure for creating new opening in existing brick wall & install new lintel?
2) The procedure for replacing lintel over exixting window?
I'm in the process of getting a retaining wall poured. How long will I have to wait to have the contraction performed backfilling? And at what minimum % strength should the wall be at that the time of backfilling?
