Except where otherwise specified in this Part, all measurements between pipes, or between pipes and walls or footings, shall be made from the outside edge nearest the parallel pipe, wall or footing.
Ill. Admin. Code tit. 77, § 890.190
Except where otherwise specified in this Part, all measurements between pipes, or between pipes and walls or footings, shall be made from the outside edge nearest the parallel pipe, wall or footing.
Ill. Admin. Code tit. 77, § 890.190