The price I quoted was for L-bolts, i.e. they couldn't bend them into a
J (ever try bending 1 1/4in stock?). I had them make the L 8" long.
Bill
Bill Turini (425) 787-4477
IT & Facilities Manager
Cypress Semiconductor Lynnwood, WA 98037
-----Original Message-----
From: Al Williams [mailto:alwilliams@olywa.net]
Sent: Thursday, September 30, 2004 12:18 PM
To: Bill Turini; towertalk@contesting.com
Subject: Re: [TowerTalk] RE: Tower bolts
I don't know if the UST supplied bolts for the HDX572 are identical or
similar to those used for the TX-472 but if they are;
they are not ordinary straight bolts but rather are in the shape of a J.
The bottom of the J is only 27" overall with only 22" embedded
in the concrete. The foundation stress analysis claims a Pullout
Capacity = 258,490 pounds and states it is OK. I can't determine
anything in the tower stress analysis that shows what the pullout stress
is. Perhaps someone can explain what benefit is obtained by having the
bolts bent into a J in the concrete.
Also, is the UST supplied stress analysis valid if the J bolts are
replaced with straight bolts? What effect would that have on a building
permit and an insurance claim if the tower failed?
k7puc
----- Original Message -----
From: "Bill Turini" <wtu@cypress.com>
To: <towertalk@contesting.com>
Sent: Thursday, September 30, 2004 10:53 AM
Subject: [TowerTalk] RE: Tower bolts
> I have a TX-472 tower that I bought used. I called a local bolt firm
> that caters to the local maritime and construction trade, told them
the
> bolt specs and they said "no problem". The first time they charges me
> $16 for three bolts (and nuts, washers, and lockwashers). The second
> time (8 years later) the price went up to $34 or so, but I had the
bolts
> made 4' long, with 6" of thread.
>
> They also supplied ASTM-A36 bolts and nuts for mounting the tower to
the
> base fixture. Any place that deals with construction that puts up road
> signs should be able to help.
>
> Bill KA4GAV
>
_______________________________________________
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