Our project was to lower the basement floor by around 50cm which involved underpinning and rebuilding the floor. It’s a 2-storey, 3 bed terrace family house.
Our builder used 3” concrete blocks to make up the concrete layer of the floor.
- This is a diagram of the basement floor as it was made
My understanding is that he should have poured concrete forming a slab and reinforced it with steel.
Is there a specific building regulation that has not been followed here?
We had a local council building inspector but he apparently missed what was going on - we suspect the builder deliberately didn't show him.
Any help or advice would be really genuinely appreciated.
We have trading standards pursuing a case for us and have also started a civil case.
Many thanks for any help.