When calculating the minimum number of required plumbing fixtures required in commercial sanitary facilities, it is highly recommended that the designer confirm with the local Building Department if they calculate using data from the 2007 California Building Code tables, 2007 California Plumbing Code tables, or some combination of the two. Minimum plumbing fixture determinations using the two sources will yield different occupant loads and fixture counts.
Many jurisdictions, such as the City of San Jose, utilize CBC Table 2902.1 and Occupant Load Table 1004.1.1., while others may use CPC Table 4-1 and CPC Occupant Load Table ‘A’, or some mixture of the two codes. For example, the City of Cupertino requires that the most restrictive calculation method be used.
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