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RE: lateral load

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Here is what I have done in the past:
If the mezzanine is connected to the panels properly (appropriate tension
ties) on three sides, I add the weight of the mezzanine to the roof and do
not provide additional lateral support for it. However, I would probably
increase the strength of the connections at the mezz level to the panels and
would carefully check the panels for the lateral weight of the mezzanine
acting at the connection (normal to the panel).

If the mezzanine is not connected on one or two sides, I would definately
design lateral restraint. If I recall, I boosted the lateral capacity to
either 3Rw/8 or 30% of the mezzanine load (including 25% of the live load if
used for storage) and checked story drift to insure that there was no

Dennis Wish PE

-----Original Message-----
From: Dave Anderson [mailto:dnae(--nospam--at)]
Sent: Thursday, November 19, 1998 7:30 AM
To: seaoc
Subject: lateral load

Hi everyone

If a mezzanine is constructed inside tilt up concrete building
and the walls are supported  at roof and foundation
do i have to consider seismic load on mezzanine diaphragm
or the load will go direct to strong connection at roof
and foundation

it is another plan check correction!