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Look up flashing building code requirements across South Carolina. 46 counties with code data available. Verify requirements with your local AHJ.
Coastal areas subject to long-term erosion and storm-induced shoreline retreat. Construction setbacks and erosion-resistant foundation design may be required.
State within or adjacent to the tornado corridor. NOAA SPC data confirms significant tornado frequency. Enhanced structural requirements apply per IRC R301.2.1.2.
Tidelands and critical areas regulated by SC Office of Ocean and Coastal Resource Management (OCRM)
Coastal areas where Vult ≥130 mph or ≥120 mph within 1 mile of coastal mean high water line
Coastal areas with ultimate wind speeds 130-150 mph
Special Flood Hazard Areas throughout SC (coastal and riverine)
State with significant severe hail frequency per NOAA SPC storm reports. Insurance restoration contractors should document pre-existing hail damage and recommend impact-resistant materials.
Entire state designated as hurricane-prone per ASCE 7-22. Direct hurricane landfalls and inland wind damage.
Areas with soil conditions susceptible to liquefaction during seismic events. Geotechnical investigation required per ASCE 7-22 Section 11.8.2.
DOD TIP Zone 1 (Very Heavy) — highest probability of subterranean termite infestation. IRC Section R318.1 requires termite protection measures for all wood structures.
Enter your address for jurisdiction-specific flashing code references, special zone checks, and downloadable reports.
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