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This concrete box ensures that it will not sink and thus means it does not need to be buried as deep. A typical grave is 4 feet deep, 8 feet long, and 3 feet wide.     To start, we need to remove the sod.
Answer: Safe burial depths vary and should be calculated. In lieu of calculations AWWA says that for an embedment soil with an Eâ of 1000 psi and no surface water, HDPE pipes with DRâs ranging from 7.3 to 21 can be safely buried from a depth of 2 ft to 25 ft where no traffic load is present and from 3 ft to 25 ft where H20 live load is present.