Eastern Pennsylvania has experienced some major storms with high winds. Wind load properties should be one of the considerations when replacing your garage door. Here are some of the most frequently asked questions about garage doors and wind load from our friends at Wayne Dalton Overhead Doors. We at Steich Overhead Doors are a proud supplier of Wayne Dalton premium products. We will post additional questions on this topic in our next blog.
Garage Doors and Wind Load
Does the design of my house affect the design wind pressures on my garage door?
Yes. The least overall horizontal plan dimension of the structure as well as the mean roof height affect the design wind pressures on the structure.
How can I determine the wind speed requirements for my location?
The American Society of Civil Engineers (ASCE) has developed standards covering wind loads on buildings and other structures. This is the base standard for most wind provisions used in U.S. building codes. The basic wind speed maps from ASCE 7-05 or ASCE 7-10 can help an individual to determine the proper wind speed delineation zones for their area. In addition, some states such as Florida provide a listing of wind speed maps by county. For the specific requirements for your area, contact your local building official.
How do I know if my door is compliant with the wind requirements of the Florida Building Code?
The Florida Building Code has specific design pressure requirement for garage doors (table 1606.2E). Wayne-Dalton goes through the Florida Building Commission Product Approval system for many of its doors. Additional information about the Florida code can be found through the Florida Building Commission.
I am installing a new wind loaded garage door in an older home. How do I know if the building frame can support the wind loads from the garage door?
A qualified design professional such as an architect, structural engineer, or contractor should be consulted to determine if the building frame is adequate to support the loads.
I live in a 120mph wind speed region. How do I determine what wind pressures I need?
Wayne Dalton has developed the WindSafe Safety Level to aid you in determining the wind pressure needed. These tables are based on typical applications. While these are a guideline, they are not intended to cover all situations. Please contact your local building official or a registered architect or structural engineer for the specific requirements in your area. Ultimately, the engineer on record for the structure should provide the wind pressure requirements for all openings.
What effect do windows in a garage door have on design wind pressures?
Windows have no effect on the design wind pressures except in wind-borne debris regions. In wind-borne debris regions, all windows (including windows in a garage door) must be impact resistant or protected with an impact resistant covering unless the structure is designed as a partially enclosed structure.