SIESMIC
The plate subducting beneath the North American Plate
What is the Juan De Fuca plate?
The vertical distance between the water surface and top of a structure.
What is freeboard?
The best piping material for seismic resilience
What is ductile iron?
The top priority during improvements and design
What is life safety?
Temporary loss of soil strength as water rises
What is liquefaction?
The area associated with the greatest seismic risk in the PNW
What is the coast?
The first step when beginning design at a new site
What is geoetchnical assessment?
Types of movement that resilient joints allow for
What is translational and rotational?
The most significant geotechnical hazard in major US earthquakes
What is liquefaction?
Pressure exerted by water within the void spaces of a soil
What is pore pressure?
The logarithmic scale used to measure the strength of an earthquake.
What is earthquake Moment Magnitude?
The discipline where seismic design is typically the responsibility of the subcontractor.
What is electrical?
Items to stockpile in case supply chains fail during a seismic event
What is spare parts?
The epicenter of the magnitude 6.9 1989 earthquake
What is Loma Prieta, CA (or SF)?
The ground improvement method that strengthens weak soils by mixing them with cementitious binder
What is deep soil mixing?
Uneven downward movement of a structure beneath different parts of the foundation.
What is differential displacement?
Water movement resulting from seismic movement. Clarifiers are particularly vulnerable.
What is sloshing?
Where you should avoid burying pipe
What is seismically vulnerable areas?
The geotechnial solution used by Hazen at Sammamish Plateau Wells
What is soil removal and replacement?
A deep foundation member installed into the ground to support structures
What is a pile?
The type of energy stored by deforming plates
What is elastic energy?
Asset prioritization level of additional O-rings for an influent pump
What is maintenance and capital planning?
The purpose of isolation valves and redundant lines
What is backup during pipe failure?
The Los Angeles water filtration plant affected by the 1994 Northridge earthquake
What is the Los Angeles Aqueduct?
Discipline to consult if Hazen wants to build a clarifier on top of liquifiable soil
What is ask a geotechnical engineer?