EPS C20 Lecture Notes - Lecture 14: Hayward Fault Zone, Trans-Alaska Pipeline System, Soil Type
14 Oct 2016
School
Department
Course
Professor
Document Summary
Hazard: cause: intensity of solar radiation. Example: length of stay on beach: 5 min: low exposure, low risk, 5 hours: high exposure, high risk, reducing risk: how . Seismic risk = seismic hazard x vulnerability. Definitions: seismic hazard: what nature presents to us. Speed of tectonic movement, location of faults, locked or aseismic creep, quality of soil (liquefaction, water saturated sediment) We cannot do anything about it, except move away: vulnerability: what we put in nature"s way. Construction quality of buildings and structures, eq resistant design, personal preparedness. This is where we can significantly reduce risk. Vulnerability low except or trans alaska pipeline: most of its 1280km length is built on fixed, anchored stilts, reduced vulnerability by technical means. The shaking peak ground acceleration (pga) measured in % of g. Look at past eq: trenching, here at hayward fault in fremont.
