ASCE 7 Chapter 13 addresses nonstructural components that must be anchored to resist lateral forces. HVAC equipment, lighting fixtures, piping, and electrical equipment are at risk during earthquakes and strong winds. Acceleration at the equipment location is higher than building floor acceleration due to building flexibility. Fragility (probability of damage) increases with increasing acceleration. Equipment must be anchored to prevent falling, which could damage equipment below or injure occupants. Flexible connections to utilities permit equipment movement without rupturing pipes or cables.