Slide 3: Drainage Design

The self draining design has 6 carefully constructed layers:
 
  1. soil sub-base, compacted
  2. 6" crusher run at 2% slope, vibratory rolled
  3. #7 drainage gravel correcting to 1% slope, tracked with loader
  4. 6" #8/10 screenings, vibratory rolled
  5. 1" C-33 sand , evenly spread
  6. 2" Precision EQ rubber footing, evenly spread.