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Re: Levelling plates or shims ?

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>From my experience, the best is using leveling nuts instead leveling plates.
It gives erector possibility to set the column precisely and in a very
secure way.
Take care of space needed for these nuts. I will suggest 1 1/2 in for 3/4
anchor rods and 2 inches for 1 in and more anchor rod diameter.
You can talk to your steel fabricator about it.

John S. (P.E.)

----- Original Message -----
From: "Acun Uyar" <acun.uyar(--nospam--at)ihlas.com.tr>
To: <seaint(--nospam--at)seaint.org>
Sent: Wednesday, February 27, 2002 4:03 AM
Subject: Levelling plates or shims ?


> Dear forum members,
>
> I'm designing an industrial building which consists of two-bay portal
> frames. All columns are pin based.
> I suggested to use pipe-sleeved anchor bolts. At this point, I would like
to
> hear your comments about these two alternatives :
>
> a) Placing 5 mm (3/16") permanent levelling plates and filling underside
> with non-shrink grout
> b) Directly erecting the columns using shim plates, then applying n.s.
grout
>
> Which of the above seems to be more practical per your field experiences,
> considering column plumb, purlin and bracing installation, etc ?
>
> Best Regards,
>
> Acun Uyar
>
>
>
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