What is the design wind speed for New York City?

For standard Risk Category II buildings, NYC's design wind speed is roughly 110-120 mph (3-second gust) read off the ASCE 7-16 maps. Exposed waterfront sites along the Hudson, East River and harbor run to the high end; the sheltered Midtown and downtown core falls toward the low end. Exact speed varies by site.

Does New York City use its own building code for wind loads?

Yes. NYC does not follow the statewide code or a plain IBC adoption. The NYC Department of Buildings writes and maintains its own NYC Building Code, which references ASCE 7-16 for wind. The rest of New York State uses a newer ASCE 7 edition, so projects must file under the correct city code and edition.

Is a New York-licensed engineer required for NYC wind load calculations?

Yes. All structural wind calculations must be prepared and sealed by a Professional Engineer licensed in New York State, then filed through the DOB NOW portal. High-rise and complex projects also undergo plan-examiner review, special inspections, and independent peer review of the structural and wind analysis.

How does risk category affect NYC design wind speed?

Risk category selects which wind-speed map you read V from, using a longer return period rather than a fixed multiplier. Standard Category II buildings use roughly 110-120 mph, while essential Category IV facilities like hospitals and shelters read a faster map. There is no wind importance factor in ASCE 7-16; higher category means higher design loads.

NEW YORK · NYC · ASCE 7-16

Five boroughs, one skyline-scale wind code

Q: What exposure category applies to New York City buildings?

It depends on the surroundings. The dense Midtown and downtown cores typically qualify for Exposure B, while the Hudson, East River and harbor waterfronts trigger Exposure C and the higher end of the speed band. Exposure must be documented and evaluated across the upwind terrain, not assumed.

Manhattan, Brooklyn, Queens, the Bronx and Staten Island design to the city's own NYC Building Code — not the statewide code — at 110-120 mph through dense high-rise canyons and a hurricane-exposed harbor.

110-120MPH RISK CAT II

5BOROUGHS / COUNTIES

B / CEXPOSURE CATEGORY

NYC BCOWN BUILDING CODE

URBAN-CANYON WIND

Where streamlines funnel between towers

NYC's north-south street grid and clustered skyscrapers channel and accelerate wind into pressure that climbs sharply with height.

SPEED · EXPOSURE · OWN CODE

Why the design basis is city-specific

NYC reads 110-120 mph off the ASCE 7-16 maps, then applies its own municipal amendments on top.

110-120 mph, harbor-driven

Atlantic hurricanes and powerful nor'easters set the speed; exposed waterfront runs to the high end of the range, the sheltered core to the low end.

3-SEC GUST

NYC's own building code

Not the statewide code and not a plain IBC adoption — the NYC Department of Buildings writes and maintains its own code, referencing ASCE 7-16 for wind.

NYC BC

Exposure B vs C by block

Dense Midtown and downtown cores qualify for Exposure B; the Hudson, East River and harbor waterfronts trigger Exposure C and the higher end of the speed band.

B / C

TALL-BUILDING ENGINEERING

The world's high-rise wind lab

Skyscraper-dense Manhattan drives demands no low-rise jurisdiction sees.

Wind-tunnel testing

Tall or unusually shaped towers are studied in a boundary-layer wind tunnel before permit.

Vortex shedding

Slender towers are checked for crosswind dynamic response and vortex-induced vibration.

Facade pressures

Upper-floor cladding sees extreme component-and-cladding pressure as Kz climbs with height.

Independent peer review

High-rise structural and wind analysis goes through a separate, independent peer review.

SUPERSTORM SANDY · 2012

The storm that reset coastal NYC

Superstorm Sandy struck NYC on October 29, 2012, pushing a record 13.88-foot surge into Battery Park and driving over $19 billion in damage across the five boroughs. The NYC Building Code response — enhanced flood-resistant construction, elevated equipment and combined wind-plus-flood design — now governs every waterfront and coastal project in the city.

13.88 ftSURGE AT BATTERY PARK

$19B+NYC DAMAGE

Oct 292012 LANDFALL

RISK CATEGORY · ASCE 7-16

Higher risk reads a faster map

Risk category selects which wind-speed map you read V from — a longer return period, not a fixed multiplier.

Risk Category	NYC Design Wind Speed	Building Types
Category I	~105-115 mph	Agricultural, temporary, minor storage
Category II	110-120 mph	Residential, commercial, hotels, standard occupancy
Category III	~125-135 mph	Schools, assembly over 300, substantial hazard
Category IV	~135-145 mph	Hospitals, fire stations, shelters, essential facilities

PERMIT-READY IN NYC

What the DOB expects

Every borough files to one authority — sealed, code-specific, and exposure-justified.

NY-licensed PE seal

All structural wind calcs must be prepared and sealed by a Professional Engineer licensed in New York State.

Right code & edition

File under the NYC Building Code referencing ASCE 7-16 — not ASCE 7-22 used elsewhere in the state.

Justified exposure

Document Exposure B for the dense core or C for waterfront, evaluated across at least 20 building heights upwind.

DOB NOW filing

Submit through DOB NOW with plan-examiner review and special inspections on high-rise and complex jobs.

OFFICIAL NYC RESOURCES

NEARBY & STATEWIDE

Compare across New York

NYC's own-code, high-rise basis is distinct from the rest of the state.

NYC-READY CALCULATIONS

Automate your NYC wind loads

Enter any NYC address or zip and get the right 110-120 mph velocity, Exposure B/C guidance and ASCE 7-16 results in PE-ready form for DOB submission.

Calculate NYC Wind Loads Look Up Wind Speed