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1705.3.3 Seismic Design Category C
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The following additional systems and components in structures assigned to Seismic Design Category C:
- Heating, ventilating and air-conditioning (HVAC) ductwork containing hazardous materials and anchorage of such ductwork.
- Piping systems and mechanical units containing flammable, combustible or highly toxic materials.
- Anchorage of electrical equipment used for emergency or standby power systems.
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