661—301.6 (103A) Plumbing requirements. Provisions of the state plumbing code, 641—Chapter 25, adopted by the state plumbing and mechanical systems board pursuant to Iowa Code chapter 105, apply to plumbing installations in this state.
Exception: Factory-built structures, as referenced by Iowa Code section 103A.10(3), that contain plumbing installations are allowed to comply with either the state plumbing code or with International Plumbing Code, 2009 edition, published by the International Code Council, 5203 Leesburg Pike, Suite 600, Falls Church, VA 22041. The manufacturer’s data plate must indicate which plumbing code was utilized for compliance with this rule, as required by 661—paragraph 16.610(15)“e.”
Private sewage disposal systems shall comply with 567—Chapter 69.
	 301.6(1) Places of public assembly, restaurants, pubs and lounges constructed on or after January 1, 1991, shall provide at least the numbers of plumbing facilities required in the Uniform Plumbing Code, 2009 edition, Table 4-1, published by the International Association of Plumbing and Mechanical Officials, 5001 E. Philadelphia St., Ontario, CA 91761. Additions to, or adding seating capacity in, these types of occupancies shall require the installation of additional fixtures based upon the added number of occupants unless it can be shown that the existing facilities comply for the total number of occupants including the additional occupants.
All water closets installed pursuant to this subrule shall be water-efficient water closets complying with requirements of the U.S. Department of Energy.
This subrule is intended to implement Iowa Code section 104B.1.
	 301.6(2) Fuel gas piping shall comply with the requirements established in rule 661—301.9(103A).
[ARC 8305B, IAB 11/18/09, effective 1/1/10]