What size Gravel should I use for a base underneath a side walk?
Answers:
1/2 inch or 3/8
Other answers:
sand first, then pea gravel.
sand first, then pea gravel.
Screenings, or Pugmill, the name depends on the area where you live. If you need a lot of fill then start with 3/4" clean about 4", then top with Screenings about 2". Screening are 3/8" and minus with a little water added, Oh yeah it's crushed limestone
Plastic sheeting to line some sand or clean dirt. So pea gravel don't punch holes in plastic. Pull city permit and check local codes requirement. Each layer spray water across and pack dirt. Plastic is for no weeds growing up underneath later and gravel for drainage. 8' deep dig, 4' for side walk and 4' gravel. grade for water run off. Run any pipes now. Potable water or drains needed and sprinkler. You can always run a 4' abs drain for future runs. Pour trowel off. Spray diesel fuel from bug spray, fine mist. Then cover with plastic a couple days for curing. Nice color uniform and prevention of cracks