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ESR-2528 | Most Widely Accepted and Trusted Page 12 of 19 APPENDIX B Design Considerations for High Wind Applications Under the 2023 Florida Building Code— Building and 2023 Florida Building Code—Residential (ASCE 7-22) 2023 Florida Building Code— Building: The Florida Building Code ─ Building provides prescribed installation requirements for concrete and clay roof tiles applicable to ultimate design wind speeds (Vult) up to 130 miles per hour (58 m/s). For specific regions of the country identified in the Florida Building Code ─ Building as being subjected to ultimate design wind speeds (Vult) in excess of 130 miles per hour (58 m/s), the tiles and fastening systems must be designed in accordance with this Appendix. 2023 Florida Building Code—Residential: On buildings located in areas where the Florida Building Code ─ Residential ultimate design wind speed does not exceed 130 mph (58 m/s) and having a maximum mean roof height of 40 feet (12.192 mm), tile application must comply with Florida Building Code ─ Residential Section R905.3.7. For greater basic wind speeds and/or higher mean roof heights, the tiles and fastening systems must be designed in accordance with this Appendix. The following design aids are provided to the roof designer for consideration in determining the fastening requirements for roof tiles for wind applications beyond the prescriptive requirements in the Florida Building Code— Building and Florida Building Code ─ Residential. These tables were developed based on the requirements of Section 1609.6.3 of Florida Building Code— Building and Florida Building Code ─ Residential and ASCE 7-22. Tables 2A through 2F of the Appendix are used to determine the generic required aerodynamic uplift moment for the tile. The generic required aerodynamic uplift moment determined from the tables must be multiplied by the tile factor ratio in Table 1 of ESR-2528 to obtain the required aerodynamic uplift moment for the specific roof tile being installed. The allowable aerodynamic uplift moment for the roof tile fastening system selected from Table 3 of the Appendix must be equal to or greater than the required aerodynamic uplift moment for the specific roof tile being installed. Underlayment Notes: For consideration of attachment of underlayments in high wind areas, see Florida Building Code ─ Building Section 1507.3.3 and Florida Building Code ─ Residential Sections R905.1.1 and R905.3.3. Attachment of underlayments must comply with the above-mentioned sections. TABLE 1 Conversion from Nominal Design Wind Speed Vasd to Ultimate Design Wind Speed Vult shall be converted as Vasd = Vult * √0.6 or from the following table: DESIGN WIND SPEED CONVERSION (mph) Vult asd SI: 302 E Santa Clara Ave 9/25/2024