ASTM A36 Has
Minimum Yield Point 36KSI
Tensile Strength 58-80KSI
Elongation in 2" min 23%
Carbon maximum .25 - .29
vr,
Joe
-----Original Message-----
From: Dubovsky, George [mailto:G_Dubovsky@grayson.com]
Sent: Monday, May 19, 2003 3:37 PM
To: k3fy@arrl.net; TowerTalk@contesting.com
Subject: RE: [TowerTalk] J bolts for TX455
I wasn't aware that A36 specified anything other than minimum mechanical
properties; if you have a reference that specifies the alloy properties, say
percentage of carbon, I'd love to see it. On the other hand, the other two
steels you reference, 1010 and 1018 do have their carbon composition
controlled and specified.
geo - n4ua
> -----Original Message-----
> From: k3fy@arrl.net [mailto:k3fy@arrl.net]
> Sent: Monday, May 19, 2003 2:56 PM
> To: TowerTalk@contesting.com
> Subject: Re: [TowerTalk] J bolts for TX455
>
>
> Please be aware : Standard threaded rod available at
> the hardware
> store is not the same grade as structural anchor bolts. The
> minimum steel
> used in anchor bolts meets ASTM A36, which specifies the
> minimum chemical
> and physical properties. Common threaded rod does not have these
> requirement and is generally made from 1010 to 1018 steel.
> It is definitely
> a pig in the poke. ALSO NEVER bend any threaded rod into
> U-bolts, J-bolts
> or L-bolts. Threads in the bend area will always be prone to fail.
>
> ...and yes this is my business, from 1/4" diameter up to
> 6" diameter we
> make some of the biggest and strongest you'll ever see.
>
> Mark K3FY
>
> www.badensteel.com
>
> ----- Original Message -----
> From: <K7LXC@aol.com>
> To: <thompson@mindspring.com>; <towertalk@contesting.com>
> Sent: Monday, May 19, 2003 12:16 PM
> Subject: Re: [TowerTalk] J bolts for TX455
>
>
> > In a message dated 5/18/03 8:41:52 PM Pacific Daylight Time,
> > thompson@mindspring.com writes:
> >
> > > I think you are talking about the bolts that hold the
> tower at the tilt
> over
> > > points. Mine were originally black steel but the bolts
> and base stay
> put
> > > when you move the tower. I have moved the tower three
> times and have
> used
> > > 1" galvanized universal bolt available at large hardware
> stores (they
> may
> > > have to order for you) or McMaster-Carr. They are 36"
> long plus a 6 "
> > right
> > > angle bend (mine were L's not J's). A foundry or
> perhaps a Northern
> Supply
> > > outlet can put bends in the bolts for you.
> >
> > Actually the all-thread that is available at any
> hardware store is the
> > same grade as the anchor bolts.
> >
> > US Tower doesn't supply J-bolts anymore; what you get
> are the anchor
> > bolts with a nut welded on the bottom end. That's all you
> need - do that
> or
> > put two back-to-back or epoxy one on and you'll be all set.
> >
> > Cheers,
> > Steve K7LXC
> > TOWER TECH -
> > Professional tower services for commercial and amateur
> > _______________________________________________
> >
> > See: http://www.mscomputer.com for "Self Supporting
> Towers", "Wireless
> Weather Stations", and lot's more. Call Toll Free,
> 1-800-333-9041 with any
> questions and ask for Sherman, W2FLA.
> >
> > _______________________________________________
> > TowerTalk mailing list
> > TowerTalk@contesting.com
> > http://lists.contesting.com/mailman/listinfo/towertalk
>
>
> _______________________________________________
>
> See: http://www.mscomputer.com for "Self Supporting Towers",
> "Wireless Weather Stations", and lot's more. Call Toll Free,
> 1-800-333-9041 with any questions and ask for Sherman, W2FLA.
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.
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