Monday, February 8, 2016

Ooma working totally for me

I have completed my ooma-ization.  I have my old number back with no more calls from India.  It got so bad that we never answered our phone.  Now we can answer it, for calls from our friends and family.

Bell didn't screw up my Internet, I now have a 'dry loop', no extra effort needed.

Here's the recipe.  Click on this reference.  This gives me Ooma credit, which I'll probably never use.  :)

Make sure you have decent Internet.  Do a DSLreports speed test.  Make sure you don't have too much bufferbloat.  I have 30 ms download, but up to 400 upload and everything works.  If you have the old black modem from Bell, do everything you can to get the white one.  Get a fast tp-link router that runs openwrt, or any super fast router.

Receive the unit, and set it up.  Plug in any old phone in the phone jack.  Don't buy their handset.  My cheap vtech wireless set does everything.  Phone lots of people.  When you are convinced that it is perfect, start the port of your landline number.  Don't do anything with Bell.  When you get the email that the number is being ported in a few days, don't answer your phone.  That will the Bell killer ladies offering you a half price on services that you will get with Ooma.  It is rude to laugh at them.

When everything is ported, celebrate with cheap wine, which you can now afford.

For extra savings, turn your cell phone into a cell tab, and use Ooma app.  But you have to give up standard texting, and use google hangouts.  You can still call out 911 on the regular cell phone if there is an earthquake.

Learning from the Taiwan earthquake

Yeah, this is the first big 'learning' earthquake since Chi-chi (also in Taiwan).  We could learn so much if we could read Chinese.  I might have to wait for the papers, but they'll be behind the pay-wall.  :)

As well, although I could learn a lot, North American engineers will be oblivious, since they are stuck to California.

Things to learn:

A map of PGV (peak ground velocity) around the epicentre.  This will tell us the angle of the thrust fault and which side has the hanging wall.

A PGV map of the whole region will show us the soil amplification.  Right now I think it is a factor of 10 in PGV, but we need a close pair of soil and rock sites.

PGV and Intensity, or structural damage.  I'd love to know if we had standing waves.

Things we could have learned by won't:

The tin can building was damaged by a previous earthquake.  What was the the PGV?  If Taiwan was smart, they would do a noise analysis of every new building and then right after an earthquake.  They've got the money for that!  :)  I suspect the tincan building was too soft in first place, and the previous earthquake softened even more.  They could have condemned the building for that, but I suspect gross corruption, of almost Turkish standards.  Let my Taiwan apologist defend that!  :)

Seriously though, Taiwan is the best in this whole thing.  I shudder to think about other countries.

Taiwan earthquake strong ground motion

I finally found the strong ground motion, here.

I just knew they put it out right away.

This is in velocity, although the scale reads 'acceleration'.  Who needs to worry about English over there?  :)

This is the beautiful clean plot near the epicentre on rock.  I am assuming this by the low value and short duration.  Max PGV of 5 cm/s .  It would be a lot of trouble to make sure this is hanging wall or footwall.

Farther away on soil we get 40 cm/s

This was my guess by the damage.  In Taiwan they have stated there should not be any structural damage until 50 cm/s and this is good target.  You can see that the solid buildings did well.  Tin can buildings fell, as well as soft storey buildings.  Inspection is everything!

In Chile, this made soft-storey condos lean over, and this has happened here as well.  For your homework kiddies, find the location of these sites, and see if there is a big difference between hanging and foot wall.  Also find the siting reports for these instruments.

Note: 40 in Chile for the main city.  80 right up next to the quake, and that made a solid building tip over in one piece.