Thank you. I did not know that.

How is the urathane panel attached? Is it better than plywood for earthquakes?

Would it be the table at E-Defense? I understand it is the world's largest 3D shaker table with a surface area of 300 square meters.

Tanks❤

i must comment to say that there is 69 likes at this moment and it is nice

That is right, just a broom and dust pan is all you need.

Or tip it back over upright.

Bay Area Seismic Retrofit oh yes most definitely why did i never think of that

@@ubme21 i was to

+Pug pro productions becuase you replied them.

@Charles Richter nice handle tiger

I saw some videos of the 2011 NZ quake. It was pretty frightening. I'm glad I wasn't there in that highway tunnel through the mountain or near some of those buildings or near the big bluff with the houses below or . . . Just going to stay here in California . . . although we are going through some nearby flooding . . .

Yes, plywood is king and is amazing in what it can do to resist earthquakes.

Only scary if you live in a 3rd world country like Turkey.

No shit.

The seismic waveform of the 1923 Kanto earthquake is most commonly used in Japan's seismic experiments. 100,000 people died. Magnitude was 7.9-8.2. It is estimated that it would have been a seismic intensity of 7 on the Japanese seismic intensity scale in the 21st century. The 2011 Great East Japan Earthquake had a seismic intensity of 7. Japan's seismic intensity scale is up to seismic intensity 7 and there is no more than that. Because it is meaningless.This is Tokyo.

He's not entirely correct--concrete blocks and morter are one of the most susceptible materials in an earthquake because they don't have any flex (so they just break when force is applied). Wood may be cheap but it can bend without breaking far better than stone. You do still need to attach said wood to the foundation properly (and the US definitely has a problem not doing that properly), but wood itself isn't an enemy in earthquake zone, bricks are.

Unless that concrete block house has a LOT of steel in it, it would be a death trap. Far worst than wood. Germany however is not in an earthquake zone, so no real problem.

I used to think the US were a bunch of cheap-ass nutjobs, but I see the appeal on cheap buildings now: they're easy to replace when the owner doesn't claim it anymore. of course you're not going to actively go about and put houses to the extreme test every single day... they're built cheap so they can be taken down after a number of years. you build them "to last", but what happens if a number of years from now a technology comes up that's several orders of magnitude better than what you have? how do you take down that building that's built "to last"? you'll be phased out by several years and orders of magnitude with relation to the rest of buildings, by the time your building is truly "phased out" by it's own integrity. I live in a brick house, and I had to improvise some sealing and weather proofing because the wind leaks through the smallest gap in the windows and doors..... nobody thought of that, at the time.

they lost the war.

no round houses?

Sounds like an interesting test but it will be hard to find someone willing to do it.

You need shear resisting elements like wood, or steel rebar.Once the shaking overcomes the dead load of the building it's gone.

@@designstudio8013: Yes, am working on a project that has half inch deformed / twisted reinforcing every two feet vertical and horizontal, all core filled with cement. Then, in the upper levels, 3/8 inch sheet with 1 inch deformed bar, run at 45 degrees to the sheet with the crossing lines at random intervals, refer Citi building and Surfside Towers for my thinking. This is supported with 6 inch square hollow section that is tied into inner and outer walls, in both directions. This supports the floor on each level.

It was JESUS who saved him

@@migs6674 you mean jesus the builder who showed up with his crew of hispanics? I think so too.

Yeah, idk what kind of level it has to be to throw couches like that

@@mrmr4622scarily, I live in California (The 2nd most prone place in the world to earthquakes) and it does not take a high magnitude to do that. Heck my tables topple over in my room at a magnitude 3.

Yeah, thinking 8.6 or higher.

You're looking for SIPS to achieve an earthquake rating. Stick built for the mass market has never survived a shaker table test. It has become code as best practices, but not truly certifiable.

I don't think spray foam will stand in the way of an earthquake

@@lollipopyummy4924 whoooooosh

@@SourBogBubble oh.. it was a joke. Lol

@@lollipopyummy4924 no, spray foam can't be used without plywood. So your statement Clearly states this comment went 50 ft over your head. Considering plywood owned this test like a black belt va 5 year old.. yeah 50 ft might be too low.

Be sure and subscribe.

Yes it was from the PEER lab.

What is RC?

@@bayarearetrofit5814 RC houses are concrete houses. Reinforced concrete house. It is a concrete house reinforced with reinforcing bars. In Japan, it is called RC housing, but isn't it called RC housing in the world?

@@RC-RCdesignstudio Are the wall-type RC hoses floating on the foundation? It seems to be a good idea to have a sturdy footing that is not attached to the foundation.

@@RC-RCdesignstudio in taiwan, it is also called RC house. In US, there are no such robust houses, so they probably have no idea

@@Drottninggatan2017 ​ @bayarearetrofit5814 kzfaq.info/get/bejne/m9mPlJR1yKi8oZ8.html&ab_channel=%E9%99%B3%E6%B0%B8%E5%B4%A7 yeah they will have footing underground like this one.

haha so funny

When you suddenly feel like Simone Biles:

Australia sucks anyway. Vile cat killing. EVIL!

Older than…. What???

Plywood is much more resistant than OSB. OSB is brittle and breaks away from the nails or staples holding it.

It is enough. Wood houses are nailed. This makes the house flex in a quake. They are very safe in a quake. You are more likely to be injured by falling objects.

You'll want to look into SIPS for that earthquake survivability at an affordable price. Just look at Turkey right now.

Yes. Plywood is best, but that wall will provide some rigidity.

no

I would not want to be living in it.

Atleast the building is not falling if it fell down, the people outside of the building may not survive

I think the point here is survivalibity rate. Better injured than be dead. We are talking about force of nature here be it earthquake, tsunami, tornado, volcanic eruption, human can only do so much against them.

Everyone dies. Chill.

Buttressing has been around for centuries. Too bad so many modern architects ignore the benfits.

Plywood by itself creates triangles.

Triangles? interesting. Karra indicates a slight downward tension.

so basically, contrary to initial belief, I probably have a higher chance of survival falling 15-20ft by staying on the second floor, rather than staying on the ground and getting crushed by said falling floor

angles are more difficult for the human brain.

Move to Christchurch.

Hi mori have you become a flat earther yet? If not I suggest watch a 13 part series called _What on earth happened_ by Ewaranon to learn that the earth is not a globe. I got it in my about tab.

Hi feeberizer have you become a flat earther yet? If not I suggest watch a 13 part series called _What on earth happened_ by Ewaranon to learn that the earth is not a globe. I got it in my about tab.

Hi westofearth have you become a flat earther yet? If not I suggest watch a 13 part series called _What on earth happened_ by Ewaranon to learn that the earth is not a globe. I got it in my about tab.

@@flat-earther the earth is more oblong then round. THE EARTH IS NOT FLAT

@@flat-earther I don't care about whatever 100-page article you read, I already saw the earth from outer space and it was round

A software bug triggers is a few seconds out of phase, and it accentuates the movement, basically exploding the house. Whoopsie!!!

Haha! And then the real earthquake balances out the motor of the shake lab and the house is fine.

When the test is over *but the house keeps moving*

Yeah, also where I live! There are only concrete houses, execpt really old wooden houses. But they are too small to be threat

Concrete structures are prone to pancaking

@@myextrachannelireallydontn4155 no. All the skyscrapers and big buildings in earthquake zones are made from concrete. Don't comment on things you know nothing about

Like the ones in Turkey....

@@stevenlang9849 question Why skyscrapers are made of concrete in sensitive areas while we recommend wooden frame for homes?

Sorry I am so late in my reply. I did not know where to find the comments. Send me a photo

Yes it is. Then cover it with siding to make it more attractive.

Good advice! You need to write a safety manual.

It is not ''a real 3 storey building'' ... they are small scale models of three storey buildings and are made with the same materials, but in a smaller scale

@@ilpatriota8241 wrong

@ilpatriota8241 No, sir. Although simplified, everything is made in actual size and experimented with the intention of destroying it.

It all depends to on if the structure is higher than one story or not. A one story structures has a better chance of surviving because it's more likely to go with the shifting. But then again if the structure has a fairly heaving roof then the chances of survival decrease.

Everyone wants to tie the house to the foundation. But if it isn't the house as a unit would slip off. Then after the quakes, just tow the house back onto the foundation!

​@@hughdismuke4703no tile roofs! The Kobe quake in Japan, tile roofs did not fare well.

@@scottslotterbeck3796 yeah that too.

Personally I'd rather my house didn't collapse with me inside it. Rebuilding can come later and is what insurance is for.

Earthquake insurance.

I think it was a before and after. No hold downs before so I doubt there were any after.

yes

Good question, and no-one can tell you the answer. I would think the extra weight would help but all the engineers would say "we don't know anything unless it is tested", they really get stubborn when it comes to computer modelling and the facts be damned.

Obviously your roof structure is built to take that extra loading of snow. I think I would rather be in your house than mine in an earthquake

Hi rossroderickwhitney have you become a flat earther yet? If not I suggest watch a 13 part series called _What on earth happened_ by Ewaranon to learn that the earth is not a globe. I got it in my about tab.

They are life sized.

Live in a cave.

You would be very safe. Live in your van down by the river.

Mainly Japan.

In my garage, making shake tables is a hobby of mine.

@@bayarearetrofit5814 do you sell one?

Nice garage. I wish I have a garage that big

@@bayarearetrofit5814 In your garage?! Obviously not in your garage! This irony of your answering does not make you interesting. Why do you talk to people that way?

What you have said here makes no sense. What does "irony of your answering mean"?, what do you mean "Why do you talk to people that way?" What way, give an example please. Please explain yourself clearly and I will give a clear answer.

Reinforcement concrete (RC) is the best material for resisting the earthquake. Wood can only have a flat structure rather than a 3 floor house.

In fact, the house on the left is less earthquake-resistant than the house on the right, but the metal fittings were weaker than those of the house on the right, so it withstood the force of the earthquake because of the rocking phenomenon. Incidentally, this experiment was conducted on the assumption that the house would collapse.

Is it a cause of concern? YES! If you hear creaking, popping thumping MONTHS after the earthquake, and if you still experience poweroutages it IS a concern! A big one! Get a specialist to look at your building

@@--2 Thank you very much! ♥️🕊

No, don't worry about it. It sounds like the building is just getting used to being shaken up previously.

@@infocook4854, I don’t think so… this is MONTHS after the earthquake, and this is after a relativily small one. If nails protrude, there are thumping/popping sounds and cracks are forming, the building prob shifted during the earthquake, and is under stress which should be chekced on just to be sure. I live in a earthquake prone area where all buildings are supposed to withstand up to 8m earthquakes, so I find it concerning that a building is showing so many stress signs after just a 5m one

I’m from California. Experienced in three earthquakes. Get out of there. Sell move, and get a better built house

It is for you to decide

@@bayarearetrofit5814 yes, i know, but i can't recognize at first view what are comparing there. Can be wood, bricks or steel framing. i was expecting that someone can give me a better explaining of the video comparisons or at least for one of them.

@@Lhekoden All I can do is show you the video. You need to figure it out from there.

I am not sure.

Where was this?

@bayarearetrofit5814 On the Mescalero reservation in the early 2000s. The homes were built on the sides of hills, and nobody wanted them. A lot of homes here are wooden and sit on stilts on the side of hills.

Geeeez, I really don't know and I thought I knew everything.

Hi wizowordd have you become a flat earther yet? If not I suggest watch a 13 part series called _What on earth happened_ by Ewaranon to learn that the earth is not a globe. I got it in my about tab.

Or dead. Please make sure and support the channel by subscribing.

@@bayarearetrofit5814 okay

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@@bayarearetrofit5814 Okayy