Ballast Formula

Calculate the amount of ballast needed for a non-penetrating roof mount.


= Required ballast per tray (three trays per mount) in pounds

P = Wind load of antenna(s) in pounds

H  = Distance from center of antenna to roof surface

W = 0.19 (P) (H) - 135

Total Ballast Needed = W (3)

Or use the online form below:

Please note, this is for estimating purposes ONLY!  Graham Brock, Inc. assumes no liability or assurances of the information provided below.  Please contact the manufacturer of your Tower mount for exact figures.  This is to be used only as a guide.

Enter Values (Feet):

P = 

H = 

Total Ballast Weight (lbs):