Building on garbage
Building on garbage
(OP)
I've got a 3 storey con't tilt up building to design.
The soil's engineeer says that the site has 15ft deep layer of garbage underneath and it is so loose that it wouldn't even resist the weight of 6" thick concrete slab without a significant settlement.(So the slab will be suspended)
We are thinking of having Frankie piles embedded into good soil underneath garbage layer for gravity loads. But for seismic, all I can think of is to have piles fixed at the top(bottom of building) and bottom(embedded enough into good soil) so piles can resist seimic forces with bending.
This building will be located in an high seismic zone and it is pretty heavy, so I am not sure at this moment that if I can make it work this way. Also, my boss is telling me that the garbage layer would be acting as a weight on piles in seismic design.
Is there any other way to resolve the seismic problem?
The soil's engineeer says that the site has 15ft deep layer of garbage underneath and it is so loose that it wouldn't even resist the weight of 6" thick concrete slab without a significant settlement.(So the slab will be suspended)
We are thinking of having Frankie piles embedded into good soil underneath garbage layer for gravity loads. But for seismic, all I can think of is to have piles fixed at the top(bottom of building) and bottom(embedded enough into good soil) so piles can resist seimic forces with bending.
This building will be located in an high seismic zone and it is pretty heavy, so I am not sure at this moment that if I can make it work this way. Also, my boss is telling me that the garbage layer would be acting as a weight on piles in seismic design.
Is there any other way to resolve the seismic problem?






RE: Building on garbage
RE: Building on garbage
I agree with the comment about using batter piles.
RE: Building on garbage
Dik
RE: Building on garbage
the first fell down, so i build another, that fell down, so i built another ... and that's what you're going to inherit, the strongest castle in the land ...
fortunately he didn't sue his castle builders,
unfortunately he probably killed them (to show how tough he was)
RE: Building on garbage
As far as I know, the whole site will be pre-loaded and soil will be placed on top to make up the settlement. This will give us some bearing capacity but not enough to put a building on.(so we will still need piles)The mechanical engineer is working on the methane problem.
RE: Building on garbage
RE: Building on garbage
RE: Building on garbage
RE: Building on garbage
It is the geotechs scope to determine which foundation is suitable and the capacites for that foundation (bearing capacity or load capacities for piles). He should also recommend the type of pile.