Demolition of Below Grade Water Clearwells
Demolition of Below Grade Water Clearwells
(OP)
Does anyone have experience with demolition of below grade concrete water storage tanks? We are abandoning a plant with old clearwells and we want to make some greenspace.
There are two lines of thought: #1. Remove the roof piece by piece, haul off, cut the walls down to 3ft below grade, haul off, then backfill with sand and topsoil and reseed. #2. Demo roof into the clearwell, demo walls to 3ft below grade, dispose in clearwell, backfill with sand and topsoil and reseed.
#2 would seem to have the problem of continual backfilling as the sand settles into the rubble. #1 seems it could be pretty expensive.
Anyone have any experience with this and would have a recommendation on the direction to take?
There are two lines of thought: #1. Remove the roof piece by piece, haul off, cut the walls down to 3ft below grade, haul off, then backfill with sand and topsoil and reseed. #2. Demo roof into the clearwell, demo walls to 3ft below grade, dispose in clearwell, backfill with sand and topsoil and reseed.
#2 would seem to have the problem of continual backfilling as the sand settles into the rubble. #1 seems it could be pretty expensive.
Anyone have any experience with this and would have a recommendation on the direction to take?





RE: Demolition of Below Grade Water Clearwells
RE: Demolition of Below Grade Water Clearwells
RE: Demolition of Below Grade Water Clearwells
I'd think #2 would be fine as long as you're not building a tennis court over the top.
I agree some holes in the wall and/or floor would prevent possible water buildup, although what would be the harm?
Flotation-wouldn't happen, gravel/sand weighs more than water.
Compacting the first lifts well should keep future settlement chances minimal.
RE: Demolition of Below Grade Water Clearwells
Flotation-wouldn't happen, gravel/sand weighs more than water?????????????
erm steel weighs more than water and ships float dont they??
RE: Demolition of Below Grade Water Clearwells