Our house is almost completed (the contract ends in a month or so) which is very exciting, but there is one thing that has me worried. Actually there are lots, but this one seems pretty big.
The guys came to do the stormwater drainage this week. I bumped into them on site and they said that there was meant to be a pipe prelaid underneath the grano slab for my garage. It wasn't prelaid so they were trying to dig a hole underneath it in order to put the pipe there.
They had a 50mm pipe of some sort and they were banging it into the soil underneath the grano with a mallet, whilst having a hose in the pipe, so it was blasting the sand out of the way for the pipe to get knocked under it.
It's now sunday, and the pipes are still there, and it looks like they weren't able to get through where they tried, they tried another location, and now ther eis also a third trench so I am not sure where or what that is.
My question really is, shouldn't have this been done seriously sooner than a few weeks before the house is meant to be handed over? And isn't it unsafe to water-blast tunnels underneath the cement? I am going to be parking two cars on it and I'm sure that the 'water blast' method would lead to an unstable ground underneath the slab. What should I be asking?
Furthermore the supe said it was OK to have my pool installed, so I've had my pool installed and then the pencil compaction done, but the stormwater contractors have dug and left open trenches next to my pool, the day after the pencil compaction was done. Is this safe? I thought the compaction needed to remain like that while the pool was 'settling in'.
I have some photos but I am having trouble getting them uploaded for the forum. Thanks for any advice you have.