earth retention, temporary
earth retention, temporary
(OP)
Hello, all,
I am an excavation contractor in the seattle wa area and i have a challenging situation. We are demoing a house with nine foot tall walls that once we remove them we will have a hole or void in the building lot, the problem is the earth/dirt is non structural and we cant slope it as the adjacent houses are very close to our lot and the dirt just isnt condusive to this. The question is what can we do that is both cost effective and temporary as we are going to build a new house in the same spot.
thanks, Dan
I am an excavation contractor in the seattle wa area and i have a challenging situation. We are demoing a house with nine foot tall walls that once we remove them we will have a hole or void in the building lot, the problem is the earth/dirt is non structural and we cant slope it as the adjacent houses are very close to our lot and the dirt just isnt condusive to this. The question is what can we do that is both cost effective and temporary as we are going to build a new house in the same spot.
thanks, Dan





RE: earth retention, temporary
How much distance is there between foundation walls of the homes? Where is the property line? Is it in the middle of the space between homes? Are there any underground or overhead utilities to worry about?
It may be cheaper and faster to slope your excavation onto the neighbor's property (with their permission only) than to shore your excavation. However, you may need to pay something to the neighbor(s) to let you dig on their property. You would also need to restore their lawn to original or better condition.
RE: earth retention, temporary
If you need to do any shoring, drilled-in, cantilevered soldier beams and lagging may be the most economical method if the soils and ground water conditions are suitable.
RE: earth retention, temporary
We already did some demo and i tried to slope or build a bench to stabilize slope but the material is a glacier till/organic top soil material with no strength, and forget about it when it rains.
thanks again, Dan
RE: earth retention, temporary
If the other house is 10 feet away from your house, then you could make a sloped, open cut if the neighbor gives you permission AND if the neighbor's house has a basement as deep as your proposed basement. If not, you will need to install sheeting about 3 feet off the face of your proposed foundation wall.
Glacial till is not a very descriptive term for soils. It can mean a mixture of several different soil types. Usually, the till is very competent. Usually, the topsoil is very shallow in depth and should not be a factor.
RE: earth retention, temporary
RE: earth retention, temporary
RE: earth retention, temporary