Specific securement methods are required for boulders that `_________`.

A Weigh more than 11,000 lbs, or have a volume of more than 2 cubic meters.

explanation

The requirements in this section apply to any piece of natural, irregularly shaped rock that:
Weighs more than 5,000 kg (11,000 lb.) or has a volume greater than two cubic meters
Is transported on an open vehicle or in a vehicle whose sides are not designed and rated for the transportation of boulders.