A. Location: All gas mains shall be laid in alleys or easements whenever possible, or at locations generally on the south and west sides of streets and alleys approved by the city engineer.
B. Lateral Clearance: Mains shall have a lateral clearance of not less that three feet (3') from other utility mains that exceed three foot (3') bury and one foot (1') when less than three foot (3') bury; providing, that under exceptional circumstances the city may authorize less clearance.
C. Vertical Clearance: Mains shall have a vertical clearance of twelve inches (12") when crossing another pipe.
D. Cover: Mains shall be laid with a cover not less than thirty inches (30"). Where the trench is in rock, the cover may be twenty four inches (24") if the main is properly cushioned as required in section 10-5-9 of this chapter. In the event interference with other subsurface utilities makes it impractical to maintain the above depths, the city may permit gas pipelines and mains to be constructed so as to avoid such subsurface utilities. If verbal approval is given by the city, the gas utility will provide a gas engineering design report within thirty (30) days of verbal approval.
E. Minimum Depth: Minimum depth of service lines shall be twelve inches (12") at the service terminal and shall normally slope to required depth at the main, but not less than twenty four inches (24") everywhere within public ways. (1959 Code § 4-7-7)