Importance Factor, Ip
1621.1.6 Component importance factor. The component importance factor (Ip) shall be as follows:
- Ip = 1.5 Life-safety component is required to function after an earthquake.
- Ip = 1.5 Component contains hazardous or flammable material in quantities that exceed the exempted amounts for an open system listed in Chapter 4.
- In addition, for structures in Seismic Use Group III: (Section 1616.2.3)
- Ip = 1.5 Components needed for continued operation of the facility or whose failure could impair the continued operation of the facility.