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RE: Fence Panel Evaluation

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Correct.  Any material within 1" of the heat zone will lose about 50% of its 
 strength capacity. That said for simple sections and for quick checks, use 
 normal rationale but with 50%Fy etc.  Actually, in some cases have to revise 
 the section modulus etc as well but simple is pretty close.  For complex 
shapes and conditions need the full strength-related equations to be accurate. 

Thor A. Tandy P.Eng, C.Eng, Struct.Eng, MIStructE, FEC
Victoria, BC
Email: vicpeng(--nospam--at)
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-----Original Message-----
From: Andrew Kester [mailto:akester74(--nospam--at)]
Sent: September-25-15 7:54 PM
To: seaint-seaosc(--nospam--at)
Subject: Re: [SEAINT-SEAOSC] Fence Panel Evaluation

Generally speaking be careful with aluminum, it's not steel!!

Welding is the biggest difference. It reduces the yield strength of the base 
 material near the weld, as one example....

Andrew Kester , PE
Sunshine state

On Sep 25, 2015, at 5:23 PM, Thor Tandy <vicpeng(--nospam--at)> wrote:
> My $0.02 worth.
> In Canada we have CSA S157 with relevant equations for capacities etc
> and ASTM has aluminum standards ...?
> Except for weld-heat impact, the equations are similar (not identical)
> to those for steel and other homogeneous isotropic materials.  So you
> could use Mr=.9*S*Fy and use Fy = 1/2 the specified strength ... etc
> Single anchor at bottom seems a little light ...?  And I didn't think

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