ROHN FRM238 Non-Penetrating Roof Mount 2.375 x 30 inch Mast
Made in the USA!
This roof mount is able to support various Antenna EPA's depending on wind and Ballast load (see details). The base of the roof mount is 3’ square with a 16” tray to fit concrete blocks, typically used as ballast for placement of various TV, Radio, Microwave, WiFi and Wireless Internet Antennas. The base mount is 16 gauge Pre-Galvanized and the mast tube is thick-walled galvanized steel for corrosion protection and go together quickly. Antenna and wind loads vs ballast weight are found in the spec sheet below.
Height and Antenna Loading capability are dependant upon ballast weight... You need to Consult an Engineer to determine the Load Bearing Capability of the roof that you are entertaining such an Installation. Please refer to the Chart (pdf link above) which is a great place to start in determining whether your circumstances qualify for such an installation. If you cannot find someone local to evaluate the registered plans for your Flat Roof Structure, ROHN may be able to put you in contact with someone who can.