Milwaukee Code of Ordinances § 200-37 Alterations.
200-37. Alterations.
When not in conflict with any regulation of this code, any alterations or repairs to any existing building or structure accommodating a legal occupancy and use but of a nonconforming type of construction, which involves either the structural members of floors or roofs, beams, girders, columns, bearing or other walls, room arrangements, fenestration, changes in location of exit stairways and exits, or any or all of them, then such construction shall be of at least one-hour fireresistive rating, and shall further be made to conform to the minimum requirements of this code applicable to such occupancy and use and given type of construction.
