To reduce the chance of an accidental dig-up, plastic warning tape should be placed a MINIMUM of _________ below grade, but high enough above cables to allow detection before cables are damaged.

Question

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According to industry standards, plastic warning tape should be placed at least 12 inches (300 mm) below the surface to reduce the chance of accidental dig-ups. This allows for enough depth for proper burial, while still allowing for detection before cables are damaged.

To Reduce the Chance of an Accidental Dig-Up, Plastic Warning