§ 15-408(5)  SAME; SPECIFICATIONS; CESSPOOL, SEPTIC TANK OR VAULT.
   No building sewer shall be laid across a cesspool, septic tank or vault until the cesspool, septic tank or vault has been well cleaned and filled with an approved earth or sand fill, then thoroughly tamped and water settled. Cast iron pipe may be used across cesspools or septic tanks, if proper bedding and support for the sewer pipe is acquired.