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#132920 - 05/14/08 09:43 PM Re: Earthquake in China Thread [Re: steelie]
Arney Offline
Pooh-Bah

Registered: 09/15/05
Posts: 2485
Loc: California
Originally Posted By: steelie
is there even a chance of making it into the cage successfully?

If the building is going to fail, no one is going to have time to get from whatever floor they're on down to the basement. And even if they had the time to get that close to the shelter, I'd rather just make a left turn and head out the front door into the street instead of facing the risk of being entombed.

A basement shelter sounds good on paper, but in the real world, no one really can or would want to use it, particularly in places like China, Iran, Turkey or those kinds of seismically active countries that won't have robust emergency services to dig you out afterwards.

Actually, since many of the newer collapsed buildings fail because corrupt and greedy builders weren't constructing the buildings to the normal building codes in the first place, I wouldn't count on them constructing the "bomb shelters" any more robustly.

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#132923 - 05/14/08 10:26 PM Re: Earthquake in China Thread [Re: MDinana]
ironraven Offline
Cranky Geek
Carpal Tunnel

Registered: 09/08/05
Posts: 4642
Loc: Vermont
The trouble is that the Richter scale is based on orders of magnitude. An 8 isn't 1/7th more powerful than a 7, or even twice, but TEN TIMES more powerful. A 7.9 is 9 times stronger than a 7.0. Humans don't generally think that way, we don't have an instinctive frame of reference.
_________________________
-IronRaven

When a man dare not speak without malice for fear of giving insult, that is when truth starts to die. Truth is the truest freedom.

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#132930 - 05/15/08 12:41 AM Re: Earthquake in China Thread [Re: ironraven]
JCWohlschlag Offline
Old Hand

Registered: 11/26/06
Posts: 724
Loc: Sterling, Virginia, United Sta...
Originally Posted By: ironraven
An 8 isn't 1/7th more powerful than a 7, or even twice, but TEN TIMES more powerful. A 7.9 is 9 times stronger than a 7.0.

Close, but not quite perfect. You are correct that a magnitude 8.0 earthquake is ten times more powerful than a magnitude 7.0. However, a magnitude 7.9 earthquake is (approximately) 7.94 times more powerful than a magnitude 7.0, not 9 times more powerful.

To convert a (logarithmic) Richter magnitude number to a (dimensionless) linear scale for comparative purposes, use the formula:
10^Mag

So:
10^7.9 ÷ 10^7.0 = 7.94

Or (for the less mathematically challenged):
10^(7.9 - 7.0) = 7.94

P.S.: You can do similar comparisons with decibels (you have to convert to bels, actually) for sound intensity.

P.P.S: Sorry for scaring some of you with the crazy math stuff! crazy
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“Hiking is just walking where it’s okay to pee. Sometimes old people hike by mistake.” — Demitri Martin

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#132936 - 05/15/08 01:31 AM Re: Earthquake in China Thread [Re: horizonseeker]
Am_Fear_Liath_Mor Offline
Carpal Tunnel

Registered: 08/03/07
Posts: 3078
Quote:
I live in los angeles and this is a concern for me, earthquakes strikes without warning and the only thing that make me live long enough to use my preparation is pure luck of not buried in the initial tremor


These videos may interest you about warnings of impending earthquakes. I find them pretty extraordinary!!

http://www.youtube.com/watch?v=KKMTSDzU1Z4

http://www.youtube.com/watch?v=hzVamNQzfYA


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#132943 - 05/15/08 03:09 AM Re: Earthquake in China Thread [Re: CDVXF7]
CDVXF7 Offline
Newbie

Registered: 02/25/07
Posts: 45
My work in takes me into Los Angeles pre-1938 buildings and basements. After watching the movie World Trade Center I started wearing a fox-40 whistle, in case I get trapped after a quake.

Check out this shelter. Note the use of chairs. As a kid my cousins and I often made "houses" out of furniture and and stuff around the house. I plan to encourage my kids to play like this. I think it helps develop the mindset to improvise.


Attachments
_41062234_quake2_ap_416.jpg



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#132944 - 05/15/08 03:15 AM Re: Earthquake in China Thread [Re: CDVXF7]
CDVXF7 Offline
Newbie

Registered: 02/25/07
Posts: 45
Here are some of the government shelters. Look at the framework of the second pic. Looks like he's sitting on chairs and doors. It looks like its only raining without wind. That shelter doesn't look like it could take much wind.


Attachments
shelter.jpg

Injured 416.jpg




Edited by CDVXF7 (05/15/08 03:15 AM)

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#132949 - 05/15/08 03:59 AM Re: Earthquake in China Thread [Re: CDVXF7]
CDVXF7 Offline
Newbie

Registered: 02/25/07
Posts: 45
Make sure you have a buckets for water or get one quick after the quake. Cody Lundin speaks highly of buckets in his latest book. Second pic: Carry your gear and family member together. I have an REI backpacking child carrier purchased for day hikes. Most Framed child carriers don't have alot of storage space but you certainly could hang stuff off the sides. I haven't made up my mind How to fit it into my Bug out plan.


Attachments
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Edited by CDVXF7 (05/15/08 04:11 AM)

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#132950 - 05/15/08 04:07 AM Re: Earthquake in China Thread [Re: CDVXF7]
CDVXF7 Offline
Newbie

Registered: 02/25/07
Posts: 45
Last one for tonight. I remember people flocking to camp at the local parks after the LA Northridge quake. I'm talking people from areas that sustained little to no damage. People stayed there for almost 2 weeks afraid to stay in their perfectly good homes. So open air spaces may fill up quick. This is a stadium being used to shelter people.


Attachments
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Edited by CDVXF7 (05/15/08 04:07 AM)

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#132953 - 05/15/08 04:22 AM Re: Earthquake in China Thread [Re: CDVXF7]
LED Offline
Veteran

Registered: 09/01/05
Posts: 1474
One good part is that bamboo seems to be plentiful. Makes a great flexible and strong frame for shelter. Not sure whats supporting those relief tents though.

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#133146 - 05/17/08 07:02 PM Re: Earthquake in China Thread [Re: LED]
Susan Offline
Geezer

Registered: 01/21/04
Posts: 5163
Loc: W. WA
> Not sure whats supporting those relief tents though.

I think the plastic ones are held up with PVC or fiberglass rods, probably brought in en masse by relief organizations.

The Anchorage quake of 1964 was a 9.2. I think they had vertical landmovement of around 35 ft (some places split and raised that far from the adjoining scrap of land).

It's hard to comprehend.

Sue

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