Wind Velocity Map

All Lexington lighting standards have been designed to withstand a specific wind/fixture load. For each lighting standard there is listed a maximum projected effective projected area (E.P.A.) and a typical weight each standard has been calculated to support. The loading capabilities of each standard are indicated for the five wind levels recognized by AASHTO.

The map above shows the maximum steady wind expected within a 50 year period  of recurrence at an elevation of 30 feet above ground. If standards are to be mounted above grade, call for assistance to select the correct standard. The isotach map indicates maximum steady winds. Since winds are rarely steady and usually involve gusts, E.P.A. calculations allow for a 1.3 gust factor.

Locations lying between isotach lines should be rated at the higher of the two wind speeds.