Square Straight Steel Poles

Wind Velocity Map

Wind Velocity Map
The wind map is intended for general guidelines only. Consult your local Authority Having Jurisdiction (AHJ) and municipal engineering
standards to determine the exact wind loading requirements for your application.

EPA Example Calculation

Existing Pole: Model No. SPD-RSS-4512-14'-4.5" Dia .125" Height 14ft Diameter 4.5in Steel Pole 
Pole EPA Rating = [70 mph, 17.7], [80 mph, 13.2], [90 mph, 10.2], [100 mph, 8], [110 mph, 6.4] 
Proposed Fixtures: (2) luminaire fixtures with an EPA of 2.5 and (2) arms with an EPA of 0.3 
Calculation: [2 x 2.5] + [2 x 0.3] = 5.6. This calculation is less than the 6.4 rating.
Therefore, this configuration is suitable for wind zones up to 110 mph.

NOTES:
Effective Projected Area (EPA) in square feet. EPA’s calculated using wind velocity (mph) indicated plus 30% gust factor. EPA’s are calculated assuming 25 lbs. per square foot of EPA to a maximum of 100 lbs. Maximum EPA is based on the luminaire weight shown. Increased luminaire weight reduces the maximum EPA.