Backfill and Final Grading

What happens here

Begin the backfilling process by carefully placing clean rock over the installed drainage pipes, ensuring they are properly enveloped within the geotextile fabric. This 'sandwiching' of the pipes and clean rock prevents soil contamination and maintains the system's permeability. The dirty rock (soil mixed with small debris) or remaining excavated soil is then placed on top, as it functions similarly to clean dirt for the uppermost layer. Use the mini-excavator to move and spread the backfill material efficiently, ensuring proper compaction and a smooth, even grade away from the building's foundation. This step is critical for directing surface water away from the basement.

Goal: Backfill the excavated trench with clean rock, ensuring the geotextile fabric is properly positioned. The cleaner rock is laid first, followed by the more 'dirty' rock or soil, mimicking natural stratification for efficient drainage. A mini-excavator is used for efficient and controlled backfilling.