Section 9630 Of Article 2. Structural And Material Requirements Of Community Mausoleums And Columbariums From California Health And Safety Code >> Division 8. >> Part 5. >> Chapter 5. >> Article 2.

. Floor slabs placed on earth shall be constructed of reinforced concrete designed by a licensed structural or civil engineer to include control joints at appropriate intervals to minimize cracks as well as appropriate vapor and moisture barriers as specified by a licensed geotechnical engineer.