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RE: Aluminum Stairs

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Yes, some type of "break" should be used - a neoprene or PVC shim may be
used, but we also frequently just paint the contact surface of the aluminum
with two coats of epoxy paint.  

> -----Original Message-----
> From: CanitzCF(--nospam--at)aol.com [mailto:CanitzCF(--nospam--at)aol.com]
> Sent: Tuesday, August 07, 2001 6:39 PM
> To: seaint(--nospam--at)seaint.org
> Subject: Aluminum Stairs
> 
> 
> I'm presently designing a set of small aluminum stairs for a 
> fabricator. The 
> high and low ends of the stringer are classically anchored to 
> the supporting 
> concrete wall or floor with an aluminum clip angle(i.e., one 
> leg is welded to 
> the stringer; the projecting leg is anchored to the 
> supporting concrete via 
> an expansion bolt). My concern is the leg (or any other part of the 
> structure) which bears upon the concrete. Isn't this a no-no? 
> Should a 
> dielectric break (such as a neoprene or PVC shim) be provided 
> between the 
> aluminum and concrete? 
> 
> As always, 
> TIA,
> Charlie Canitz, PE
> Bel Air, MD
> 
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