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Re: Seismic mass

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No, the basement is not included in the seismic mass, anymore than the weight of the slab on grade and foundations is included in the seismic mass for a non-basement building.
----- Original Message -----
Sent: Tuesday, February 07, 2006 9:13 AM
Subject: Seismic mass

Just a conceptual question: If the building has a basement, do you include the basement in the calculation of the seismic mass, or only the portion above ground? Thanks in advance.
Javier Encinas, PE