Health and Safety Code section 9630


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.

Source: Section 9630, https://leginfo.­legislature.­ca.­gov/faces/codes_displaySection.­xhtml?lawCode=HSC§ionNum=9630.­ (updated Jan. 1, 1994; accessed Jun. 25, 2025).

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Verified:
Jun. 30, 2025

§ 9630's source at ca​.gov