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[TowerTalk] mast strength.

To: <towertalk@contesting.com>
Subject: [TowerTalk] mast strength.
From: k4ldr@sunco.com (Peter J. F. Shaw)
Date: Sat, 30 Jan 1999 09:10:05 -0500
Greetings  Dick W5AA & TowerTalkians:
Did anyone entirely translate the spec information contained in the
posting below?  I remember a single posting from K7LXC indicating that
maybe the pipe was maybe a sched 40 and not strong enough.  I was
expecting (and hoping for) a lesson on how to translate the coding.
73  Pete K4LDR  Citrus County, FL
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From: Richard J Brown <rjbro@MISNET.COM>
To: towertalk@contesting.com <towertalk@contesting.com>
Subject: [TowerTalk] mast strength.
To: <towertalk@contesting.com>
Date: Thursday, January 28, 1999 20.21

I have a  twelve foot long  piece of galvanized pipe I want to use for
a mast.  On the pipe is stamped in red ---
" Wheatland cbw rn 1176  cbw rm 1504  astm A53 -f- gra 40  A 21 foo
32698 DI."    This has an outside  Diameter of  one and three quarter
inches.  It just does fit through the rohn 2" thrust bearing...  I
want to use it to mount a beam  with a  4.9 square foot wind surface
at the top of the mast pipe   which is  sticking ten feet  out of the
top of a flat top rohn 25 top  section  with  the  rohn  thrust
bearing on the flat  top and a rotor in the usual place. How much wind
would it take to bend this pipe??
Thanks  Dick W5AA
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