Any type of and all the underground utilities must be identified and located. After utilities or underground piping have been located, they are staked to flag their location and prevent damage.
Once the exact area to dig has been identified and the layout staked out, heavy equipment such as an excavator or backhoe is brought on site to do the work.
The basement excavation begins by discovering the elevation of the basement floor as well as locating the water and sewer services. The sewer line, water line and sump line (stormwater evacuation), are dug in a trench and installed in the new building. The foundation and basement itself are dug with an excavator.
Basement Foundation and Backfill
The basement foundation is the footing and walls with a code approved system of drainage on the outside of the foundation. Once the walls are up and the work has been approved by the building inspector. A bulldozer is brought in to push the existing soils back in around the foundation walls. This backfill is then tapered away from the building to aid drainage.
Once the building is framed with exterior siding and drywall in place, it is ready for rough grade. The driveway and sidewalks are “cut out” at this time. A rough grade prepares the installation of the driveway and sidewalks, and gives the property a general contour to ensure proper drainage for stormwater. After the driveway and sidewalks have been installed, a final grade is done.
The final grade consists of grading the property for proper drainage and to touch up settling that may have occurred during construction. A final grade also addresses customer requests and aesthetics.