Minnesota Administrative Rules
Agency 151 - Labor and Industry Department
Chapter 1335 - FLOODPROOFING
Part 1335.2200 - FLOODPROOFING REGULATIONS, SECTION 802.1

Universal Citation: MN Rules 1335.2200
Current through Register Vol. 49, No. 13, September 23, 2024

FPR section 802.1 is amended to read as follows:

Applicability: Spaces to be intentionally flooded with flood water (W4) shall be provided with the necessary equipment, devices, piping, controls, etc. necessary for automatic flooding during the flood event and drainage system(s) shall utilize approved piping materials and have sufficient capacity for raising or lowering the internal water level at a rate comparable to the anticipated rate of rise and fall of a flood that would reach the RFD. These pipe systems shall be directly connected to the external flood waters to maintain a balanced internal and external water pressure condition. Provisions shall be made for filling the lower portions of the structure first and for interconnections through or around all floors and partitions to prevent unbalanced filling of chambers or parts within the structures. All spaces below the RFD shall be provided with air vents extending to at least three feet above the elevation of the RFD to prevent the trapping of air by the rising water surface. All openings to the filling and drainage systems shall be protected by screens or grilles to prevent the entry or nesting of rodents or birds in the systems.

Statutory Authority: MS s 104.05

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