Hi.
I'm digging some footings for a two-storey extension. BCO, is happy with an 800 mim depth as we are on to sand, but the water table is only 600 mm down so it leaves 200 mm of water on top of the sand.
This will obviously get pumped out before we pour the concrete footings, but with all the rain we've had some of the wall has slipped in, I've now shuttered it but it'll be next week before i can get the footings poured and I'm worried about more slop getting in before then.
Given I've sand at the base of the trench, i was thinking about doing a lean mix (30-40mm) by mixing in some cement so the base of the trench is hard and easy to clean up before the fittings are poured.
If there s downside to this? Thanks.
I'm digging some footings for a two-storey extension. BCO, is happy with an 800 mim depth as we are on to sand, but the water table is only 600 mm down so it leaves 200 mm of water on top of the sand.
This will obviously get pumped out before we pour the concrete footings, but with all the rain we've had some of the wall has slipped in, I've now shuttered it but it'll be next week before i can get the footings poured and I'm worried about more slop getting in before then.
Given I've sand at the base of the trench, i was thinking about doing a lean mix (30-40mm) by mixing in some cement so the base of the trench is hard and easy to clean up before the fittings are poured.
If there s downside to this? Thanks.
