De Facto Microzonation Through the Use of Soils Factors in Design Triggers.
De Facto Microzonation Through the Use of Soils Factors
in Design Triggers.
Todd, D. R.; Harris, J. R.
International Conference on Seismic Zonation, 5th.
Proceedings. October 17-19, 1995, Nice, France, Quest
Editions, France, 510-517 pp, 1995.
building technology; design triggers; earthquakes;
microzonation; seismic design; seismic zonation; soil
factors; critical parameters
The 1994 edition of the "National Earthquake Hazard
Reduction Program (NEHRP) Recommended Provisions for the
Development of Seismic Regulations for New Buildings"
takes a step toward becoming a microzonation-based
design guideline by including soils factors in its
design control factors (triggers). The Provisions
Update Committee of the Building Seismic Safety Council
(which publishes the NEHRP Recommended Provisions) is
planning to make a full conversion to this type of
microzonation in the 1997 edition by including soils
factors as a critical parameter in the assignation of
Seismic Performance Category. This paper discusses the
effect of the changes adopted in the 1994 edition of the
NEHRP Recommended Provisions, and examines the impact of
full conversion to soils-factor-based control factors.