Section 4107. �Plastic Film for Subgrade Treatment

4107.01���� general requirements.

A.��� Use polyethylene film no less than 0.85 mils (21 �m) thick, either clear or white pigmented type. Use strips wide enough to provide a lap no less than 12 inches (0.3 m) between adjacent strips.

B.��� Plastic film which has been used no more than once for curing concrete pavement and has been salvaged in usable condition may be used for treatment of subgrade.