Structural Engineering for Tree Mounted Solar Lighting Systems Page 1   Page 2 Tree Mounted Solar System The math calculations above show a safety factor of 10.5 at 50 mile per hour winds. Basically this means the systems structural engineering is over the acceptable factor of 1. At 100 mile per hour winds in ultimate conditions the safety factor is 2.6 These custom tree mounted solar up-lighting systems were designed and installed for these four individual ficus trees only. This installation was challenging and labor intensive. The desired lighting effect requires precise placement of light fixtures to prevent illuminating the bracketology. The trees located between light poles are much easier to light with solar energy by installing the equipment on the poles. All light fixtures use safe low voltage lamps.   GO Solar Company Mailing Address: 145 S. Glenoaks Blvd. #435 Burbank, CA 91502 818-566-6870 State of California - Contractor License Number - C46 Solar 685319