Aluminum Flagpole Wind Load Chart

Knowing the Wind Zone for the area where the aluminum flagpole is to be located, will help you identify the flagpole that is most suitable for that area. The National Association of Architectural Metal Manufacturers (NAAMM) publishes the wind load chart.


Wind Zone Key:

85 mph  90 mph  100 mph  110 mph  120 mph  130 mph  140 mph  150 mph  Special Wind Region

This is important to determine which In Ground Flagpoles are suitable for your area.

If you're planning to buy an in ground flagpole, one of most important questions to ask yourself is, what is my Wind Zone? Your flagpole should be strong enough for the wind loads to which your flagpole will be subjected to. The National Association of Architectural Metal Manufacturers' (NAAMM) Guide Specifications For Design Of Metal Flagpoles (ANSI/NAAMM FP 1001-07), have determined the Maximum Wind Speed for both Flagged and Unflagged flagpoles. Wind zone speeds are determined as max potential over 3 second bursts. Find your Wind Zone.

ANSI/NAAMM FP1001-07 publishes a map from the ASCE/SEI 7-05 Minimum Design Loads for Buildings and Other Structures showing values representing nominal 3-second gust wind speeds in miles per hour at 33 feet above ground level. A reproduction of this map is provided above and should be used to specify the proper flagpole for your application. Please note that Special Wind Zone Areas, including but not limited to mountainous terrain, gorges, and ocean promontories, should be examined for unusual wind conditions.

Wind Zones - Other Regions

Location MPH
Hawaii 105
Puerto Rico 145
Guam 170
Virgin Islands 145
American Samoa 125
Alaska 90-130
*Note: All wind speeds listed are for In Ground installations only.

Contact us for Wind Speed information on shoe base installations, flying multiple flags, exceeding the maximum NAAMM recommended flag size for flagpole height chosen, installations on rooftops, or for flag materials other than nylon.