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According to the California Plumbing Code, when installing a gas water heater in a seismic zone, what additional requirement must be met beyond standard installation?

Correct Answer

C) Seismic restraint strapping system

CPC Section 507.2 and California's seismic requirements mandate that water heaters be anchored or strapped to resist horizontal displacement during earthquakes. This includes upper and lower restraint straps connected to wall framing or masonry to prevent tipping and gas line rupture during seismic events.

Answer Options
A
Double-wall venting system
B
Installation on a concrete pad only
C
Seismic restraint strapping system
D
Flexible gas connector of any length

Why This Is the Correct Answer

CPC Section 507.2 and California's seismic requirements mandate that water heaters be anchored or strapped to resist horizontal displacement during earthquakes. This includes upper and lower restraint straps connected to wall framing or masonry to prevent tipping and gas line rupture during seismic events.

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