>What would that look like for 6061-76 its yield is 40,000 I
>believe.
---------------------
Safety factor f 2
Wind loading factor k .004 lb/ft2/mph2
Maximum stress S 40,000 psi
Outside diameter D 2 in
Inside diameter d 1.5 in
Total length of mast 8 ft
Height above support h 4 ft
Antenna 1 height h1 4 ft area a1 6.1 ft2
Survival velocity: 93.2 mph
Failure velocity: 131.9 mph
Weight of mast: 37.47 lbs
That's for 1/4" wall.
By now you should have enough examples to figure out how to use
the mast calculator by yourself, for other materials and sizes:
http://www.math.niu.edu/KARC/mast/
Dave Hachadorian, K6LL
Yuma, AZ
.
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