Glad were all in agreement that the 1/4" walled 10 foot stick of stainless
steel mask is more than up to the challenge, plus it won't rust :)
They make structural pipe too. ( not sold at Lowe's or Home Depot) This what
U.S tower uses to make there tower legs. ASTM A53 Gd. B, A500 Gd. B ( F-y=46
ksi) structural pipe
You should order a mask as stated by the manufacture of your tower. i.e 1026
DOM tubing.
Here is a good website, as they list the yield strength
http://www.onlinemetals.com/steelguide.cfm
Plus they have a weight calculator too.
http://www.onlinemetals.com/calculator.cfm
here a link to some A513 - Type 5 Steel DOM tubing
http://www.onlinemetals.com/merchant.cfm?id=283&step=2&top_cat=197
Or take the guess work out and order from here.
http://www.texastowers.com/steelmasts.htm
Craig
--- On Tue, 11/3/09, K7LXC@aol.com <K7LXC@aol.com> wrote:
From: K7LXC@aol.com <K7LXC@aol.com>
Subject: Re: [TowerTalk] Stainless Steel Mast
To: towertalk@contesting.com, z50r@yahoo.com
Date: Tuesday, November 3, 2009, 3:01 PM
In a message dated 11/3/2009 10:15:20 A.M. Pacific Standard Time,
towertalk-request@contesting.com writes:
> Ok hopefully this helps vs more confusion.?
QSL that.
> The difference between pipe and tube is simply in the way it is sized
That's one parameter but not even close to the real story. A whole
chapter of my Up The Tower book is devoted to masts. Like our own resident
PE, KR7X, said - you've got to look at the yield strength figure and pipe
(for the most part) doesn't have one.
Cheers,
Steve K7LXC
_www.championradio.com_ (http://www.championradio.com)
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