ROHN 45G Tower Base For Flat Roof Mount FR45G

ROHN FR45G Flat Roof Tower Mount Base

The FR45G bolts directly to a Water-tight and Reinforced Flat Roof Surface for a guyed 45G Tower, but Cannot be Used as a Self Supporting Base Plate (see R-SB45G). This Tower Base uses double bolted joints which are proven to be the best method of joining tower sections for sturdiness and dependability. The 45G tower can be used guyed, self-supporting or bracketed configurations according to specifications in the ROHN catalog. As a guyed structure, it can rise to a maximum of 300 feet. However, Roof Mounted Tower Options may limit Potential Height considerably. Self-supporting and bracketed heights depend on loading and are also specified in the ROHN catalog .

There is no Wind Load vs. Height Guidance to be found this type of Mounting in any of the Specification Literature for good reason... You need to Consult an Engineer to determine the Load Bearing Capability and Wind Speed Survivability of such an Installation. Guying is an absolute must, but remember that guying will simply increase the down pressure onto the Base support, which in this case, is your Roof! I would imagine that any Roof mounted structure is going to attract the attention of other Building Owners, Code enforcement and the Insurance adjuster. 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.

Warranty Sheet