Your trusted source for
wind load information
The authority reference for ASCE 7-22 and state-by-state wind load requirements — built on 24 years of permit-approved engineering for engineers, architects, contractors, and building officials.
Start where you need to
Authority-grade references for the latest ASCE 7 (ASCE 7-22) and every state's requirements — each page written for its own topic.
ASCE 7-22 Guides
Wind speed, exposure categories, risk categories, C&C vs. MWFRS, and topographic effects — explained plainly.
State Requirements
How each state's building code adopts ASCE 7, with the current edition in force per jurisdiction.
HVHZ & Florida
High-Velocity Hurricane Zone rules for Miami-Dade and Broward, including NOA product approvals.
Frequently asked questions
The fundamentals of wind load engineering under ASCE 7.
What is wind load in construction?
Wind load is the force exerted by wind on a building or structure. It includes pressure on windward surfaces and suction on leeward surfaces. Engineers calculate wind loads per ASCE 7 standards to ensure buildings can safely resist wind pressures during storms and high-wind events.
What is ASCE 7?
ASCE 7 (Minimum Design Loads and Associated Criteria for Buildings and Other Structures) is the American Society of Civil Engineers standard that defines how to calculate wind loads, seismic loads, and other environmental forces for building design. Most US building codes reference ASCE 7 for wind load provisions.
What is the difference between ASCE 7-16 and ASCE 7-22?
ASCE 7-22 is the latest edition, published in 2022; ASCE 7-16 was published in 2016. The 2022 edition includes updated wind speed maps, refined provisions for various building types, and clarifications based on engineering feedback. ASCE 7-16 is referenced by IBC 2018 and IBC 2021, while ASCE 7-22 is referenced by IBC 2024.
What is the difference between Components & Cladding (C&C) and MWFRS?
C&C (Components & Cladding) calculations determine wind pressures for building envelope elements like windows, doors, and wall panels. MWFRS (Main Wind Force Resisting System) calculations determine wind forces on the structural frame. C&C pressures are typically higher due to localized peak pressures on smaller areas.
What is HVHZ?
HVHZ stands for High Velocity Hurricane Zone. In Florida, HVHZ includes Miami-Dade and Broward counties, which have the strictest wind load requirements in the nation due to extreme hurricane exposure. Products installed in HVHZ must have Miami-Dade NOA (Notice of Acceptance) approval and pass TAS impact testing.
Do I need a PE seal for wind load calculations?
PE (Professional Engineer) seal requirements vary by state and project type. Most states require a licensed PE to seal structural calculations including wind loads for commercial buildings. Some states allow exemptions for residential projects below certain size thresholds. Check your specific state requirements for exact PE seal provisions.