Search return periods by jurisdiction and year.
Effective dates and source citations included.
Delivered as XLS, or mapped to your preferred format.
Global wind code intelligence
Design wind return periods.
Every U.S. state & 193 countries.
Code-required wind return periods (1-in-50, 1-in-100, etc.) from the 1990s to today — with citations and effective dates.
Trusted by
Dataset
Audit-ready code baselines
Know what wind event buildings are designed for — without searching through thousands of code documents.
US · State
Jurisdiction
Florida
Return periods
RC = risk category
RC 1
1-in-300
RC 2
1-in-700
RC 3
1-in-1700
RC 4
1-in-3000
Source
ASCE 7-22
Coverage
Every country worldwide + all 50 U.S. states.
History
1990s–today with effective dates and adoption context.
Citations
Trace each record back to codes and standards.
Delivery
XLS by default, plus custom formats mapped to your schema.
Coverage
30+ years of wind code history.
Track what was required, where, and when it changed.
Application
Where teams use designwinds
Benchmark hazard models and validate exposure portfolios against building-code baselines.
Support underwriting, pricing, and loss control with jurisdiction-level design requirements.
Confirm design criteria across jurisdictions with cited code references.
Screen sites and understand design requirements early in diligence.
Methodology
Traceable and verifiable
Every value is sourced from publicly available regulatory documents and includes citations and effective dates.
Sources
Government publications, code documents, and regulatory archives.
Normalization
Standardized schema across jurisdictions, years, and code editions.
QA
Cross-referenced checks for consistency before release.
Integration
Integrate with your workflow
Start in XLS, or request a custom format mapped to your schema (fields, IDs, effective dates, citations).
Request sampleDelivery
Get data in the format you need
Start with XLS — or request CSV/JSON/API-ready formats mapped to your schema.
Example export
XLS / spreadsheet
| region_name | risk_category | return_period | year_lower | year_upper | source |
|---|---|---|---|---|---|
| Florida | 1 | 300 | 2023 | 9999 | ASCE 7-22 |
| Florida | 2 | 700 | 2023 | 9999 | ASCE 7-22 |
| Florida | 3 | 1700 | 2023 | 9999 | ASCE 7-22 |
| Florida | 4 | 3000 | 2023 | 9999 | ASCE 7-22 |
Example export
CSV
region_name,risk_category,return_period,year_lower,year_upper,source
Florida,1,300,2023,9999,ASCE 7-22
Florida,2,700,2023,9999,ASCE 7-22
Florida,3,1700,2023,9999,ASCE 7-22
Florida,4,3000,2023,9999,ASCE 7-22Example export
JSON
[
{"region_name":"Florida","risk_category":1,"return_period":300,"year_lower":2023,"year_upper":9999,"source":"ASCE 7-22"},
{"region_name":"Florida","risk_category":2,"return_period":700,"year_lower":2023,"year_upper":9999,"source":"ASCE 7-22"},
{"region_name":"Florida","risk_category":3,"return_period":1700,"year_lower":2023,"year_upper":9999,"source":"ASCE 7-22"},
{"region_name":"Florida","risk_category":4,"return_period":3000,"year_lower":2023,"year_upper":9999,"source":"ASCE 7-22"}
]Example export
API-ready
GET /wind-return-periods?jurisdiction=US/FL&year=2023
→ [{"risk_category":1,"return_period":300},{"risk_category":2,"return_period":700},{"risk_category":3,"return_period":1700},{"risk_category":4,"return_period":3000}]Delivery options
Custom mapping
- Match your field names and IDs
- Include citations, dates, and metadata
- Delivered as files or ingestion-ready
FAQ
Have questions?
What exactly is a “design wind return period”?
It’s the wind event frequency building codes require structures to be designed for (e.g., 1-in-50, 1-in-100).
Do you provide citations and effective dates?
Yes — citations and effective dates are included so records are auditable.
How do I get a sample?
Use the request form and tell us the jurisdictions and years you need. We’ll send a sample and pricing.
What formats do you deliver?
XLS by default, plus custom formats mapped to your workflow.
Request sample
Get a sample dataset
Tell us what jurisdictions and years you need. We’ll reply with a sample and pricing.
Or email contact@designwinds.com.