Storm Tanks for Tree Pit Construction

Storm Tanks must be 36 inches long, 18 inches wide and 18 inches high.

The Storm Tanks must be injection molded for consistency and constructed of a lightweight (0.085 inch min.), perforated, polypropylene top and bottom platen supported by 8, evenly spaced, 2 3/8 inch diameter, rigid (0.085 inch min.) PVC columns.

The Storm Tank's fixed, attached ends and side panels must be perforated and made of lightweight (0.085 inch min.) polypropylene.

The assembled Storm Tank must have a 97% void factor and must conform to HS-25 loading requirements.