Rare Example of Instrumented Bldg Damaged During During An Earthquake
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From: Bret Cahill on 21 Jun 2010 23:26 http://www.usc.edu/dept/civil_eng/Earthquake_eng/Selected_Publ/PDF/ICS_Paper_II.pdf Two interesting questions: Why aren't they instrumenting bldgs today with relatively cheap MEM accelerometers? Who decided to spend the equivalent of 200K on force balance accelerometers and other electronics 40 years ago for a public bldg out in the desert? Bret Cahill
From: Benj on 22 Jun 2010 00:09 On Jun 21, 11:26 pm, Bret Cahill <BretCah...(a)peoplepc.com> wrote: > http://www.usc.edu/dept/civil_eng/Earthquake_eng/Selected_Publ/PDF/IC... > > Two interesting questions: > > Why aren't they instrumenting bldgs today with relatively cheap MEM > accelerometers? > > Who decided to spend the equivalent of 200K on force balance > accelerometers and other electronics 40 years ago for a public bldg > out in the desert? > > Bret Cahill Hey, it's in Kalifornia! They've got money to burn out there. They not only give it to our poor but they just encourage ANYBODY from ANYWHERE to walk in and take it from the rich Gringos. Consider the money spent on instrumenting some community building as some that wasn't wasted for a change.
From: jimp on 22 Jun 2010 00:41 In sci.physics Bret Cahill <BretCahill(a)peoplepc.com> wrote: > http://www.usc.edu/dept/civil_eng/Earthquake_eng/Selected_Publ/PDF/ICS_Paper_II.pdf > > Two interesting questions: > > Why aren't they instrumenting bldgs today with relatively cheap MEM > accelerometers? Because it is a dumb idea on many, many levels. > Who decided to spend the equivalent of 200K on force balance > accelerometers and other electronics 40 years ago for a public bldg > out in the desert? If you had read your own link you would know that. -- Jim Pennino Remove .spam.sux to reply.
From: Uncle Al on 22 Jun 2010 10:57 Bret Cahill wrote: > > http://www.usc.edu/dept/civil_eng/Earthquake_eng/Selected_Publ/PDF/ICS_Paper_II.pdf > > Two interesting questions: > > Why aren't they instrumenting bldgs today with relatively cheap MEM > accelerometers? > > Who decided to spend the equivalent of 200K on force balance > accelerometers and other electronics 40 years ago for a public bldg 1) Parkfield, CA 2) Caltech's Millikan Library. Every time Southern California shakes a Caltech Earth Sciences grad student writes his PhD. -- Uncle Al http://www.mazepath.com/uncleal/ (Toxic URL! Unsafe for children and most mammals) http://www.mazepath.com/uncleal/qz4.htm
From: Mark Thorson on 22 Jun 2010 12:10
Uncle Al wrote: > > Bret Cahill wrote: > > > > http://www.usc.edu/dept/civil_eng/Earthquake_eng/Selected_Publ/PDF/ICS_Paper_II.pdf > > > > Two interesting questions: > > > > Why aren't they instrumenting bldgs today with relatively cheap MEM > > accelerometers? > > > > Who decided to spend the equivalent of 200K on force balance > > accelerometers and other electronics 40 years ago for a public bldg > > 1) Parkfield, CA > 2) Caltech's Millikan Library. > > Every time Southern California shakes a Caltech Earth Sciences grad > student writes his PhD. In the 1970's, there was a lot of concern over the so-called Palmdale Bulge. Trouble is, it now appears the bulge never existed. http://www.kilty.com/bulge.htm |