Location 1: Eagle Idaho Location 2: Downtown Boise
In this case study there are two jobs with the exact same issue. One company called us before they removed the concrete and the other did not. We were able to remediate both deep soil issues resulting from steps missed during the backfill process by the excavation companies.
Issue:
During the excavation process the native soils were removed so the foundation could be constructed. As they back filled against the foundation they didnt compact the fill in lifts so as to compact the soil a layer at time. This resulted in one of the front porches settling before the rest of the construction was completed and the other front porch settled and the concrete cracked in one area.
In one case the concrete porch was removed before we got there. If we were called earlier theres a good chance we could have saved it.
In the other case we didnt need to touch the concrete and we were still able to correct the lack of compaction.
Polyflow Solution:
In both cases we drove rods down to the native soil which was mostly about 4 feet to 5 feet deep on one job and the other we went about 9 feet deep. This was an excellent base for us to inject our two-part structural foam to consolidate the loose soil. We injected every 4 feet in each injection site.
At one site new concrete was poured and is now sitting on stable soil.
At the other site we drove our rods at angles under the existing slab to perform direct injection in order to consolidate and stabilize the loose soil. We closely monitored the existing concrete to ensure we did not over injection the soil and create unwanted lifting of the existing concrete structure.
This was done at a great cost savings benefit to the excavation contractors. The excavators otherwise would have had to remove all of the dirt next to the foundation and replace it in lifts trying to avoid the pillars and existing structure.
