03-09-2020 Council Packet - Laserfiche WebLink

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4 3. It is used solely for parking of vehicles, building access or storage. The above- noted alternative elevation methods are subject to the following additional standards: No other use has been designated on the floor plans or would be approved other than “crawl space”. a. Design and certification. The structure's design and as-built condition must be certified by a registered professional engineer or architect as being in compliance with the general design standards of the State Building Code and, specifically, that all electrical, heating, ventilation, plumbing and air conditioning equipment and other service facilities must be at or above the regulatory flood protection elevation or be designed to prevent flood water from entering or accumulating within these components during times of flooding. The design of the structure will be reviewed through the building permit process and will be required to meet building code standards and flood proofing requirements. The furnace and hot water heater are shown on the first floor of the home, above the flood protection elevation. The air conditioning equipment was not shown. b. Specific standards for above-grade, enclosed areas. Above-grade, fully enclosed areas such as crawl spaces or tuck under garages must be designed to internally flood and the design plans must stipulate: i. The minimum area of openings in the walls where internal flooding is to be used as a flood proofing technique. There shall be a minimum of two openings on at least two sides of the structure and the bottom of all openings shall be no higher than one foot above grade. The automatic openings shall have a minimum net area of not less than one square inch for every square foot of enclosed area subject to flooding unless a registered professional engineer or architect certifies that a smaller net area would suffice. The automatic openings may be equipped with screens, louvers, valves, or other coverings or devices provided that they permit the automatic entry and exit of flood waters without any form of human intervention; and The house plans show at least two openings on two sides of the structure. The flood vent details and report state that the bottom of the vents shall be no more than one foot above final grade. The ICC-ES Evaluation Report for the flood vents states that the Model 1540-520 can accommodate 200 square foot of the enclosed space. Based on the provided plans, the enclosed crawl space is approximately 1,636 square foot, which will require nine (9) flood vents. The ICC-ES Evaluation Report states that the flood vents are mechanically operated and are activated by rising water. ii. That the enclosed area will be designed of flood resistant materials in accordance with the FP-3 or FP-4 classifications in the State Building Code and shall be used solely for building access, parking of vehicles or storage.