Downtown Los Angeles - 4 Earthquake Scenarios (3D Simulation)

What would be the worst case scenario that downtown Los Angeles could face in a major earthquake? Watch this video to find out!

I want to remind all of you that my channel's goal is to educate and to bring more insights about what earthquakes truly are, and also to bring more awareness about earthquake preparedness and safety. The least we can do is to share more information to the general public on social media or with friends and family.

We can't predict the next big earthquake,
but we can all take active measures to
significantly reduce the negative effects of
a potential tragedy.
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This video serves an educational purpose and should be solely treated as such. Preparation through education
is less costly than learning through tragedy.
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#earthquake #simulation #collapse

[IceLordCryo]

I think an invisible floor or something along the edge of the cutaway would really help scenarios with this building. I think it would help show the importance of basement structural integrity to not have the majority of the building spilling over into a chasm. Love these animations!

[wilcofaber]

Nice video again. Soil liquefaction was also seen in the japan 2011 quake. It s a scary fenomenon.

[Tricia_K]

A small detail perhaps, but I really appreciate how you keep the information cards up long enough for us to actually read them without having to hit pause - it's really refreshing! :)

[windymchordel]

The tower is the ultimate survivor. It managed to withstand all tests.

[DobleL_DoubleL]

I like the details like the cars or the people.
It makes the video more realistic!

[SneezingScug]

I love the way you reply to almost all your comments

[gwenp]

By far my favorite video you've done. Seeing how differently the quakes act is fascinating! I would love to see more like this with the other different scenarios.

[iixlinpz]

Thank you for choosing my idea! ❤❤ best youtuber ever!

[OfflineDisconnects]

Youre earthquake simulation is so talented! You try your best and you are talented! Youre so good! I hope you have a nice day! Anyways happy early birthday to you!

[Grassplant]

You should have added the iconic Bank building because the skyline feels off without it

[ShonnMorris]

Another great video! hadn't seen this one yet. I really like these video where it's just the sounds of the city and the quake. The deep rumble is something all of us who grew up in earthquake country have heard before.

[RoboCoonie]

This would work a lot better as a simulation if you showed proper building code that we have in place for our large structures. Such as base-isolation, and proper building materials. A lot of our buildings are base-isolated and can handle a lot of shaking. And several of our building are sunk deep into the bedrock.

[giftedshybee]

i like how it sounded like everyone started cheering when the earthquake started

[marcellogabrielle]

This is amazing! I love the sound effects from the previous videos! Btw happy birthday!! 🎉❤

[BloonChip]

I feel like one day, this ain't gonna age well.

[Zaltic]

Very satisfying. It would be awesome if this could all be done in real time like in tear down

[高矩-sk]

A construction method in which the building itself directly receives and resists seismic energy.
The purpose is to prevent the building from collapsing during an earthquake.
The higher the floor, the longer and stronger the shaking, and the more likely it is that furniture in the room will move or fall over.
2. Damping structure
A construction method that incorporates seismic control devices (dampers) into the pillars and walls of each floor to absorb seismic energy and dampen vibrations. The higher the floor, the longer and stronger the shaking, but the amplitude of shaking is smaller than that of earthquake-resistant structures.
3. Seismic isolation structure
A construction method in which a seismic isolation device is installed under the foundation of a building or on an intermediate floor, and the seismic energy transmitted from the ground is absorbed by the device and greatly reduced.
It can reduce the shaking of the building even more than the damping structure. To prevent not only a building from collapsing but also indoor furniture from moving or overturning in the event of an earthquake. Although it is the latest earthquake-resistant construction method, both construction costs and maintenance costs such as periodic maintenance are expensive.
It is also pointed out that it may not be possible to reduce shaking much during large-scale long-period earthquakes.
Sometimes the strength of the earthquake becomes weak again and again.
 The recommended construction method for earthquake countermeasures for high-rise condominiums is the "seismic damping structure, " which reduces the risk of building collapse and suppresses shaking. Sometimes the strength of the earthquake becomes weak again and again

[georgespaceagency]

Always a good job! Keep on going, Happy Birthday!

[SpiderCollector]

Awesome video!

The towers in DTLA I would worry about is the (former) Arco Twin towers, which are 50 floors and built using brittle welds in the frame.. One of the structures had the frame built only 1/3 of the way up, and the Sylmar quake fractured the welds and they had to reweld where needed using the same shitty methods. Unfortunately, money is the core of everything and instead of making the needed adjustments, they continued construction. The buildings held up fine along with the rest of DTLA including the old buildings from the early 1900's. It is believed the Aon Center with 63 floors and over 800' tall was built using this method as well. Coincidentally, a world famous structural engineering firm took up residence in one of twin towers and they are quite confident the buildings will hold up even in a worst-case scenario and I agree, but I still wouldn't want to be in buildings that are built like that, which were built during a time period where they were not aware the welds would crack like that. A building damaged like that would likely cost more to repair properly, instead of rebuilding. I am pretty confident that in a San Andreas scenario, that most if not all the buildings would remain standing.

The building I am watching the closest now is the Milennium Tower in San Francisco which is leaning, and has a well built structure on a shitty foundation. Its a prime example of money being placed above all, and that needs to be outlawed and only the best codes need to be pushed into place immediately.

In the 94 Northridge quake, some areas experienced up to a little over 2 G's of upward motion (but was rated 9 on the Mercalli scale) that put smaller buildings to the test. Its the longer period motion that affects the taller buildings the most. When the southern portion of San Andreas finally snaps, older studies predicted motion between 1.5 - 2 G's in some areas. But when it snaps south of Salton Sea, the rest of the fault continue moving which runs east and is right behind the San Bernadino mountains when you get as far north as LA. However, recent studies have shown that it may be stronger than expected and will likely be at least a Magnitude 8, and some areas could be 10-11 on the Mercalli scale as it was when the northern end of the same fault snapped in 1906 in San Francisco, and there are buildings (older codes) that rode it out and still stand to this day. The ground you are on will dictate the intensity for sure.

Puente HIlls fault dips below DTLA and then heads towards West LA before the fault ends and is apparently capable of up to an M 7.5 with strong up-down motion not much different than what Northridge gave, but would last longer. That would likely be worse for DTLA and the rest of the basin.

Buildings that are built properly will hold up well and not collapse. Most people know about Fukushima, but before the disaster happened, it was worth noting that the structures held up well. There were other power plants north of that with one of them VERY close to the rupture zone, and the structures were fine as well, and thankfully they did not have the same defect that led to any further meltdowns. And this is with a Magnitiude 9 quake. The same example in Alaska back in the Good Friday quake in 1964 which was a M 9.2 and a lot of the high rises are still standing to this day with some needing repairs/retrofits and some of them with minor damage including Begich Towers in Whittier which was close to the epicenter.

The key takeaway is that if buildings are built properly where they not only withstand, but continue to be operational after a quake, then the danger of quakes is greatly reduced. There are new methods of building large wood frame structures that will make them resistant to any shaking - look up the Simpson strong tie video showing a 6 or 7 story building on a shake table with very intense motion. A combo of this, and using base isolation or other shock reducing methods would be great. The US Bank tower which is really the tallest building in Downtown LA would be a good place to be with the way it was built with the core being massively reinforced in every direction. The new Intercontinental Hotel Building (73 floors) would be good as well, where there are portions of the building to absorb shocks, and the core walls are 4' thick just like the new WTC, which was coincidentally built by Turner which is the same construction firm.

[JSKTimebest]

The first one is a bit inaccurate because i was at LA in 2019 when a 7.2 earthquake hit and there was little to no damage.