July 2006
H-18-8
2.5 Existing Facilities - Evaluation
a.
A seismic evaluation shall be conducted for existing facilities in areas of
Moderate High, High, and Very High Seismicity that meet one or more of the
following criteria:
i. Facilities selected for renovation as part of a VA classified Major Project
ii. Facilities selected for renovation where the area of renovation is greater
than 50% of the total area
iii A project is planned which significantly extends the building's useful life
through alterations or repairs which total more than 30% of the
replacement value of the facility.
iv. Facilities under consideration by the VA for purchase or lease
b.
Existing Critical and Essential Facilities shall be evaluated using the
procedures in ASCE 31-02 for the Immediate Occupancy Performance Level.
c.
Existing Ancillary Facilities shall be evaluated using the procedures in ASCE
31-02 for the Life Safety Performance Level.
2.6 Spectral Response Accelerations
The base shear in the design and analysis for all new and existing facilities shall
be based on the spectral response accelerations shown in Table 4 after
adjustment for site class effects as specified in ASCE 7.
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