KANSAS · SEDGWICK COUNTY / CITY OF WICHITA
Where the Plains Wind Meets the Air Capital
Wichita anchors south-central Kansas at the heart of Tornado Alley, where open-prairie fetch and Sedgwick County permitting set the wind-load bar under ASCE 7-22.
WIND CLIMATE · EXPOSURE
Why an Open Prairie City Reads High on the Map
Flat Kansas fetch and Gulf-versus-Canadian air collisions push Sedgwick County into the demanding end of ASCE 7-22 wind design.
Unobstructed Plains Fetch
Wheat-country terrain lets straight-line winds accelerate for miles before reaching a structure.
EXPOSURE C COMMONTornado Alley Core
South-central Kansas sits where supercell season peaks April through June each year.
HIGH STORM RISKUrban Pockets, Exposure B
Downtown, College Hill and Riverside can qualify as Exposure B where built-up terrain runs upwind.
B IN THE CORESite Decides the Speed
The 110–120 mph band is a Risk II reference; actual V varies by exact address and category.
VERIFY PER SITECOMPLIANCE CHECKLIST
What a Sedgwick County Permit Actually Asks For
The City of Wichita Metropolitan Area Building and Construction Department enforces the Kansas-adopted IBC referencing ASCE 7-22.
City Building Permit
File through Wichita's Metropolitan Area Building and Construction office.
WICHITA MABCConfirm the Wind Speed
Pull V for your address from the ASCE 7-22 maps; do not assume a single citywide number.
110–120 MPH REFLock the Exposure
Default to C across open Sedgwick County terrain unless dense upwind build-out earns B.
B / C BY TERRAINSet the Risk Category
Schools, assembly and essential facilities read a higher-return map than standard occupancy.
ASCE TABLE 1.5-1Kansas PE Seal
Commercial, industrial and complex structures carry a Kansas-licensed engineer's seal.
KSBTPCounty Reference
Verify outside-city and unincorporated parcels with Sedgwick County government.
SEDGWICK CORISK CATEGORY · RETURN PERIOD
Higher Stakes Read a Longer Map
In ASCE 7-22 the category does not multiply a speed — it selects which return-period map you read V from.
| Risk Category | Wind Speed Map (MRI) | Typical Wichita Use |
|---|---|---|
| I | Lower-speed map (300-yr) | Minor ag and storage on the prairie |
| II | Standard map (700-yr) · 110–120 mph ref | Homes, retail, most Wichita buildings |
| III | Higher map (1,700-yr) | Schools, large assembly, hazardous storage |
| IV | Highest map (3,000-yr) | Hospitals, fire/EOC, aerospace-critical facilities |
ACROSS SOUTH-CENTRAL KANSAS
Same Prairie Risk, Nearby and Statewide
The metro shares Wichita's open-terrain exposure and Tornado Alley climatology from Sedgwick County outward.
Kansas Statewide Rules
The full Kansas wind-load and code-adoption picture.
KANSASTornado Alley Loads
How convective wind risk shapes design across the corridor.
CORRIDORWind Speed by Location
Look up the mapped V for any address you build at.
MAP LOOKUPAll State Requirements
Adopted editions and rules state by state.
50 STATESASCE 7 Standards
The standard behind every Kansas wind calculation.
ASCE 7-22Free Resources
Guides, references and tools for engineers and contractors.
LIBRARYRUN THE NUMBERS
Calculate Wichita Loads, Address by Address
Enter a Sedgwick County address and get site-specific V, exposure, and ASCE 7-22 pressures ready for permit submission.