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RE: Pinned Base Plate or Fixed

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If base plate is provided as fixed with bolts outside the flange, the base
will act as fixed in reality.  It will try to take moments.  If base plate 
is not designed/calculated including such moments, it may be under 
-designed as far as thickness is concerned.

-----Original Message-----
From: seaint-seaosc(--nospam--at) [mailto:seaint-seaosc(--nospam--at)] On
Behalf Of refugio
Sent: Monday, September 16, 2013 1:34 PM
To: seaint-seaosc(--nospam--at)
Subject: Re: [SEAINT-SEAOSC] Pinned Base Plate or Fixed

There should be no such contradiction, however, the real and the model are
separate.  You will need to follow up in field for your design at the 

---- On Mon, 16 Sep 2013 02:24:37 -0700 Behnam Heydari
<behnamheydari_80(--nospam--at)> wrote ----

have 10 story steel building to design which is Braced frame in one 
direction and IMRF in other. I assumed pinned column support in braced 
frames and fixed support in IMRF for having better energy dissipation 
during earthquake and using appropriate modification factor. The problem 
initiated when I wanted to design fixed base plates of corner columns for 
big resultant moments from analysis. What if I release moment at column 
supports in both directions? Does it have any contradiction with the IMRF 
design philosophy?



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