These are department rules in addition to the requirements in IBC chapter 31: Mausoleum structures shall be designed, constructed, and maintained in accordance with chs. SPS 361 to 366. Mausoleums shall be classified as a Group S-1 storage occupancy and shall be constructed of reinforced concrete or other materials of similar durability.
Wis. Admin. Code Department of Safety and Professional Services SPS 362.3100
Section 157.12(2) (d), Stats., reads as follows: "A mausoleum shall be constructed to last as long as possible, taking into consideration the technology and economics applicable to mausoleum construction at the time of construction."