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RE: Notched Beam

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Irv:

Just so that I can make sure that I am reading this correct...does it kind
of look something like this (time for a little ASCII art):

 |-----------------------------
 |     ^
 |  7" |
 |     |
 |----------| ^
            | |
   <- 6" -> | 2"
 |----------| |
 |
 |
 |
 |------------------------------

If so, then where is the PSL "really" bearing?  At the top flange?  At the
bottom flange?  Both flanges?

Assuming you are doing notch check per the NDS.  Correct assumption?

Regards,

Scott
Adrian, MI

-----Original Message-----
From: IRV FRUCHTMAN [mailto:ifaeng(--nospam--at)yahoo.com] 
Sent: Saturday, August 11, 2007 7:51 AM
To: seaint(--nospam--at)seaint.org
Subject: Notched Beam


Dear Fellow Engineers,
On an ongoing renovation project I observed the
following framing detail: 

A 12" deep PSL beam is supported by a W12-72 I-beam,
with the top of the PSL some 7" above the top of the
I-beam.  The builder notched the end of the PSL to
"fit" past the top flange (plus 2by nailer) and extend
to the web of the I-beam.  The notch is about 7" from
the top of the PSL and 2" wide and 6" long. The bottom
of the PSL is blocked to the bottom flange. 

I calculate that PSL shear stress is about twice the
allowed by assuming the notch extends to the bottom of
the beam. 

Before I advise the owner to replace the PSLs (there
are 4) am I missing something or is there is a way to
reinforce them? 

TIA,
Irv



       
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