[Towertalk] Rohn 25G Bracketing

[Bill Coleman]

On 10/2/02 4:22 PM, David Jordan at wa3gin@erols.com wrote:

>Now imagine a bracketed 40ft 25G in the same scenario...all the force of 
>the windload is on those four lag bolts in the brick or the 3/8" bolts 
>through the facia board and into the wall or studs with a plate on the 
>back, etc. 

Lag bolts into brick are not going to be sufficiently strong to hold a 
bracket. I estimated lateral forces in excess of 700 lbs in my bracketed 
installations. Carriage bolts are a must, and they must connect to a 
structural member of the bracketing structure.

Oh, and the HB25 series has SIX 3/8" holes, not four. Use them ALL. (I 
don't know about the HBU, it may only have four)



Bill Coleman, AA4LR, PP-ASEL        Mail: aa4lr@arrl.net
Quote: "Not within a thousand years will man ever fly!"
            -- Wilbur Wright, 1901