The fields with the red border are required.
ASTM F1083 Sch 40 Steel Pipe & ASTM F1043 Group IA
Wind Speed MPH
    Mph   km/h  
    Fence Height - Feet                  
    Ft   m    
    Line Post O.D. -- Inches                  
    in.   mm    
    Mesh Size - Inches (mm)     << If value to the left is zero, Height / Line Post combination is invalid    
    Wind Exposure Category                  
    Icing Effect**                  
Line Post Spacing  >>>>>>>>
Line Post Spacing  50K  >>>>
Fixed Post Spacing -- Center-to-Center --7 Feet  to 
accommodate panel width of 7 Feet 3 inches.