1.6 * ZEN

Notes: Z = zone factor (IBC-2000: e.g., Zone 4 = 0.4g); E = 0.5 (SE), 1.0 (DE), and 1.25 (Zone 4) and 1.50 (Zone 3) (ME); N = near source factor (typically, N = 1 for faults not capable of producing events with maximum moment magnitude M> 6.5 and faults with slip rates less than 2 mm/year). Linear interpolation is permitted for intermediate values.

a more detailed study of these hazards is warranted. In both cases, the expected EPA is used to establish the likelihood of ground failure given the liquefaction potential or the geologic group at the site.

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