Florida WindCode® Information

5 STEPS TO DETERMINE YOUR WindCode® RATING

Step 1: DETERMINE YOUR WIND SPEED

Determine the minimum wind speed (MPH) your door must meet or exceed from the map below, or go to http://windspeed.atcouncil.org/. Determine if wind-borne debris is applicable. See map below.

WIND-BORNE DEBRIS

The wind-borne debris region is also known as those areas that require the large missile impact rated windows. In Florida, being farther south and closer to the shoreline, it is more likely a home or building will be in the wind-borne debris region.


HIGH VELOCITY HURRICANE ZONE (HVHZ)

Miami-Dade and Broward Counties require all garage doors meet the large missile impact rating, regardless if the garage door has windows or not. Standard windows are not available in Miami-Dade and Broward Counties.

Florida WindCode Map

Step 2:

Determine if your home is in an Exposure B, Exposure C, or Exposure D region.

Exposure B

is defined as urban and suburban areas, wooded areas or other terrain with numerous closely spaced obstructions.

Exposure C

is defined as open terrain with scattered obstructions including flat open ground, grasslands. All of Miami-Dade and Broward Counties is Exposure C, unless meets Exposure D definition.

Exposure D

is defined as being within 600 ft. of the ocean front or other large body of water measuring at least 5,000 feet across. Contact building code official or DASMA Technical Data Sheet #155t for design pressures.

Step 3:

Determine the structural type of your home.

Structure_types

Step 4: FIND YOUR WindCode® “W” RATING

Using wind speed (MPH), exposure and structural type, find your required design pressure and WINDCODE® “W” rating in the charts below.

Design Pressures

The design wind load pressure rating of a door as expressed in PSF (pounds per square foot). The design pressure of the door must equal or exceed the design pressure for the garage door opening that a door is to be installed. Design pressure has positive and negative values.

WindCode Florida Chart

Supporting Documents

Clopay® Florida WindCode® Literature

DASMA Technical Data Sheet 155t (TDS 155t)- This is a wind load guide that provides design pressures for common door sizes, wind speeds and exposure levels based on the 2010 Florida Building Code.

DASMA Technical Data Sheet 188 (TDS 188) - Explains how insurance mitigators may require additional level of approval (primarily impact ratings) that may not be required by code. This may allow homeowners to obtain discounts on their insurance premiums.

Florida Website Navigation Instructions- This document provides detailed steps to find the Clopay® Florida approved drawings on the Florida Building Code website.

Useful Online Resources

www.floridabuilding.org
2010 Florida Building Code / Building
Wind Maps By County
www.atcouncil.org
‚ÄčEstimated Wind Speed by Location Tool
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