In article ,
Dave Stanton wrote:
Beg to differ Dave. A 20 foot pole with a goodly load thereon, I've
seen quite a few of they "fracture" at the top "U" or more like "V"
bolt fixing. The thicker scaffold pole is far better at resisting
this..

People forget wind loading on big arrays and also vibration.

Of course it will depend on the loading.

However, I'd be worried about using something too strong with a large
array on the usual chimney stack mounting. Something has to give under
storm conditions. I'd rather it was the aerial pole than the chimney
itself.

--
*I finally got my head together, now my body is falling apart.

Dave Plowman London SW
To e-mail, change noise into sound.