Saturday 11 April 2015

Excavation complete


Dirt management is major issue.  Trucking the excavated material can be a huge cost.  Lucky for us a local homeowner needed some fill for a basement he had to backfill after demolishing an old house.  Only one block away, the round trip of two minutes was far superior to trucking the dirt to the landfill or some distant site.  Today the bulk of what was left was removed from the foundation area.  Using a laser to measure the cut, our excavator carefully scribes out the flat base of the hole.  Digging too much would mean the footings would need more concrete to be high enough, and digging not enough would mean the footing wouldn't be thick enough to meet the specification necessary.  


As the machine creeps backward, the final elevation is scratched out
Spray paint is used to indicate where final grade is achieved.  This allows the base to be extremely flat and is an ideal surface to form the footings

At this point the material is all removed from site and only a small amount remains to create an earth bridge from the rear yard to the foundation.  We will push some dirt back in so that the framers can install the first floor. It is helpful to have the first floor on to support the concrete so that the pressure of the backfill doesn't damage the foundation.

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