Required depth of impact-absorbent surfacing material for the height of equipment
Maximum height of equipment Type of material Minimum depth of material
6 feet shredded bark 6 inches
10 feet mulch 9 inches
11 feet 12 inches
7 feet 6 inches
10 feet 9 inches
11 feet wood chips 12 inches
6 feet 12 inches
9 feet fine sand 6 inches
7 feet 12 inches
10 feet fine gravel 9 inches
10 feet or less shredded rubber 6 inches
Kan. Admin. Regs. § 28-4-585