Background
Type: Article

Derivation of seismic design forces for multistorey buildings from uniform hazard spectral curves

Journal: Shock and Vibration Digest (17413184)Year: January 2000Volume: 32Issue: Pages: 67 - 67
Language: English

Abstract

The use of uniform hazard spectra for obtaining the seismic design forces is being considered for the next version of the national building code of Canada. Such spectra provide the spectral accelerations of a single-degree-of-freedom system for a range of periods but for a uniform level of hazard. One of the issues that needs to be resolved before uniform hazard spectra are used in design is the adjustment required in the base shear to account for the higher mode effects present in a multi-degree-of-freedom system. This issue is examined through analytical studies of the response of idealized multistorey building frames to ground motions representative of the seismic hazard in east and west Canada.