NORTH CAROLINA · 2018 NC RESIDENTIAL CODE · ASCE 7-10
North Carolina Wind Load Requirements
From the Outer Banks' barrier-island gusts to the Blue Ridge foothills — NC design wind speeds fall as you move inland from the Atlantic coast.
ADOPTED CODE
NC Code & ASCE 7 Edition
The 2018 North Carolina Residential Code adopts ASCE 7-10 as the foundational standard for all wind load calculations.
Building Code
2018 North Carolina Residential Code, adopted statewide.
2018 NC RESASCE 7 Version
ASCE 7-10 governs MWFRS and Components & Cladding pressures.
ASCE 7-10ICC 600 Standard
Residential construction in high-wind regions, 130–150 mph zones.
ICC 600PE Stamped Plans
NC-licensed PE seal required for Wind Zone III high-wind zones.
PE SEALCoastal high-wind counties — Carteret, Dare and Hyde — are designated Wind Zone III with design wind speeds of 110+ mph, triggering Chapter 45 High Wind Zone Provisions.
GEOGRAPHY DRIVES THE LOAD
Coast vs Piedmont vs Mountains
Design wind speeds drop as you move west, away from Atlantic hurricane exposure. ASCE 7-10 ultimate (Vult) ranges by region.
Coastal & Outer Banks
Wind Zone III barrier-island and coastal high-wind counties.
110–140 MPHCentral / Piedmont
Wind Zone II covers the Triangle, Triad and Charlotte metro.
90–110 MPHWestern Mountains
Wind Zone I — lowest design speeds in the Blue Ridge.
85–100 MPH| Region | Wind Zone | Design Wind Speed (Vult) |
|---|---|---|
| Coastal High Wind Counties | Zone III | 110–140 mph |
| Central North Carolina | Zone II | 90–110 mph |
| Western North Carolina | Zone I | 85–100 mph |
Coastal counties with design wind speeds of 130+ mph are wind-borne debris regions — windows, doors and skylights need impact-resistant glazing or approved shutters.
CITY-SPECIFIC GUIDES
Major North Carolina Cities
Local wind speeds, code adoption and enforcement detail for North Carolina's largest metros.
Wilmington
Coastal Atlantic exposure on the Cape Fear coast.
140–150 MPH · COASTALCharlotte
Piedmont metro, lower inland design speeds.
100–110 MPH · PIEDMONTRaleigh
Capital city in the Research Triangle, Piedmont zone.
100–110 MPH · PIEDMONTGreensboro
Triad region, central Piedmont wind exposure.
100–110 MPH · PIEDMONTDurham
Research Triangle hub, inland Piedmont zone.
100–110 MPH · TRIANGLEWIND ZONE III · OUTER BANKS
Coastal High-Wind Counties
Three Atlantic-facing counties carry NC's highest wind design requirements — all Wind Zone III at 110+ mph.
Carteret County
Morehead City, Beaufort, Atlantic Beach, Emerald Isle. Wind-borne debris region; ICC 600 compliance required.
110–140 MPHDare County
Nags Head, Kill Devil Hills, Kitty Hawk, Manteo, Hatteras. Outer Banks barrier-island construction.
110–140 MPHHyde County
Ocracoke, Swan Quarter, Engelhard. Remote coastal access, extreme hurricane exposure.
110–140 MPHWHAT THE CODE DEMANDS
North Carolina Requirements
Chapter 45 High Wind Zone Provisions, ICC 600 and PE sealing — the core compliance path for NC builds.
Continuous Load Path
Hurricane straps and clips roof-to-wall; anchor bolts and hold-downs wall-to-foundation.
CH. 45Debris Protection
Impact-resistant glazing or approved shutters in 130+ mph wind-borne debris regions.
130+ MPHRoofing Systems
6-nail shingle attachment, reduced sheathing nail spacing, enhanced underlayment.
ICC 600PE-Stamped Plans
Required for Wind Zone III, commercial buildings and Risk Category III/IV facilities.
PE SEALRisk Category II is standard for homes; higher risk categories (III & IV essential facilities) read a higher-speed wind map and carry larger design loads.
RUN THE NUMBERS
Calculate NC Wind Loads in Under a Minute
From Asheville's mountains to the Outer Banks' 150-mph zone, get permit-ready ASCE 7 pressures by ZIP — 2018 NC Residential Code and ICC 600 references built in.
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