[TowerTalk] Aluminum Tower Mast

[knormoyle at surfnetusa.com]

[Dennis] "From day one, we used an aluminum 2" OD THICK WALL ALUMINUM CONDUIT Mast."

I was curious about aluminum conduit. A quick search says that modern aluminum conduit is 6063 temper T-1
(our typical 6061 use is T6) 

Wikipedia says ( http://en.wikipedia.org/wiki/6063_aluminium_alloy )6063 T-1 has a yield strength of only 9kpsi

Regardless of the wall thickness, I would think the low yield strength would make many other options better for equivalent weight.

also, conduit is specified as I.D. was this 1.5" I.D. -> 1.9" O.D. conduit? or 2" I.D. -> 2.375" O.D. ?

??
-kevin