VIRGINIA · NORFOLK · ASCE 7-22
Where the Chesapeake meets the fleet, the wind sweeps in off open water
Norfolk anchors Hampton Roads on the Elizabeth River and lower Chesapeake Bay — a low-lying, hurricane- and nor'easter-exposed independent city built around the world's largest naval base.
HAMPTON ROADS · THE FETCH
Open-water fetch across the lower Chesapeake Bay
Wind arriving over miles of unbroken bay and Atlantic water hits Norfolk's shoreline with little to slow it — the reason waterfront sites read Exposure C while sheltered inland blocks may qualify for B.
Fetch off the bay and Atlantic raises shoreline wind exposure — the Elizabeth River frontage, naval piers, and Ocean View feel it first.
SITE EXPOSURE · COASTAL CITY
Reading exposure across a waterfront naval city
In Norfolk the same map speed produces very different pressures depending on whether your site faces open water or sits behind blocks of development.
Exposure C — Waterfront
Naval Station Norfolk, Elizabeth River frontage, bay shoreline and Port of Virginia: open terrain, direct water exposure.
SHORELINEExposure B — Inland
Downtown, Ghent and Park Place sit behind closely spaced buildings that shelter the wind — Exposure B may apply.
URBANExposure D — Rare Piers
Structures set directly on piers with extensive unobstructed water fetch can fall into Exposure D — site-specific per §26.7.
PIERAt 30 ft, Exposure C raises velocity pressure about +40% over Exposure B (Kz 0.98 vs 0.70), and Exposure D adds roughly +66% (Kz 1.16) — which is why the waterfront/inland call matters so much in Norfolk.
COMPLIANCE · USBC + ASCE 7-22
What a Norfolk permit set has to prove
Norfolk is a Virginia independent city — not part of any county — permitted under the Virginia Uniform Statewide Building Code, which adopts the IBC and references ASCE 7-22.
Independent City Jurisdiction
Permits run through the City of Norfolk — an independent city, not a county — under the statewide USBC.
INDEPENDENT CITYMap Speed & Risk Category
120–130 mph for Risk Cat II; higher categories read a longer-return-period map for naval and essential facilities.
120–130 MPHSurge + Wind Together
Much of Norfolk sits at low elevation; combined wind and storm-surge flood loads must be addressed in design.
LOW-LYINGPE-Sealed VA Calcs
Calculations sealed by a Virginia-licensed PE, with MWFRS and C&C pressures; naval projects add federal review.
VA PE SEALRISK CATEGORY · ASCE 7-22 TABLE 1.5-1
Higher risk reads a longer-return-period map
There is no importance-factor multiplier in ASCE 7-22 — a higher risk category selects a different basic-wind-speed map (longer MRI), raising the design speed.
| Risk Category | Map MRI | Norfolk Speed (approx.) | Typical Buildings |
|---|---|---|---|
| I | 300-yr | ~115–125 mph | Agricultural, minor storage, temporary structures |
| II | 700-yr | 120–130 mph | Homes, commercial, hotels, most occupancies |
| III | 1,700-yr | ~135–145 mph | Schools, assembly >300, many naval facilities |
| IV | 3,000-yr | ~145–155 mph | Hospitals, fire/EOC, shelters, critical naval command |
Velocity pressure: qz = 0.00256 Kz Kzt Kd Ke V². A 15 ft waterfront facility at V=130, Kz=0.85 (Exp C), Kzt=1.0, Kd=0.85, Ke=1.0 gives qz ≈ 31 psf.
STORM RECORD · HAMPTON ROADS
What Norfolk has already weathered
Hurricanes and nor'easters both drive the design basis — extratropical storms here can match tropical systems for wind and surge.
Hurricane Isabel, 2003
Hampton Roads' worst modern hurricane — record bay surge and heavy damage to naval and civilian structures.
RECORD SURGEHurricane Irene, 2011
Cat 1 landfall on the Outer Banks brought tropical-storm winds and low-lying flooding to Norfolk.
FLOODINGAsh Wednesday Nor'easter, 1962
One of the most destructive coastal events in the region — proof nor'easters can rival hurricanes here.
NOR'EASTERMatthew & Michael, 2016–18
Offshore and post-tropical passes still delivered tropical-storm winds and rain to the waterfront.
OFFSHORENEIGHBORHOODS · 23501–23523
Speed and exposure by part of the city
Norfolk zip codes span the 23501–23523 range; the right value tracks how close a site is to the river, the bay, and the naval base.
| Area / Zip | Setting | Speed | Exposure |
|---|---|---|---|
| Naval Station / Willoughby · 23505, 23511, 23513 | Naval base, waterfront | 125–130 mph | C · Risk III/IV |
| Elizabeth River / Port of VA · 23504, 23508 | River frontage, port | 125–130 mph | C |
| Ocean View / Bay shore · 23518, 23523 | Chesapeake Bay shore | 125–130 mph | C |
| Downtown / Ghent · 23507, 23510 | Dense urban | 120–125 mph | B may apply |
| Park Place / inland · 23502, 23503 | Inland neighborhoods | 120–125 mph | B may apply |
OFFICIAL SOURCES
Verify against the governing authorities
Confirm the adopted code edition and licensing before you submit.
NEARBY & STATEWIDE
Compare Norfolk across Virginia and the coast
Move from this independent city out to the statewide picture and nearby coastal markets.
GET STARTED
Run Norfolk-compliant numbers in minutes, not days
Enter a Norfolk address or zip and get the 120–130 mph map speed, exposure guidance, risk-category adjustment, and PE-ready ASCE 7-22 output.