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RE: Seismic Design

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In a steel building built for earthquake country, a lay-person might be able to notice the larger, more complicated connections between the beams and columns of the lateral-load resisting frames – probably at the perimeter of the building, or else the prominent presence of diagonal braces.


Nels Roselund, SE

South San Gabriel, CA


From: Barry H. Welliver [mailto:barrywelliver2(--nospam--at)]
Sent: Monday, August 29, 2005 7:04 AM
To: seaint(--nospam--at)
Subject: RE: Seismic Design


Slightly smaller windows.


Barry H. Welliver



From: GSKWY(--nospam--at) [mailto:GSKWY(--nospam--at)]
Sent: Sunday, August 28, 2005 9:40 AM
To: seaint(--nospam--at)
Subject: Re: Seismic Design


Okay, stepping back a little, say you were trying to describe the difference between a building in San Francisco and one where you didn't need to design for either wind or seismic.


I.e. you are comparing a building where lateral load controls to one where gravity load controls.


If someone looked at the two buildings during construction, after they had been topped out, but before any exterior cladding, etc. had been put up,  what would they notice as being different about the two buildings.


Assume it's a 20-story office building.


Gail Kelley