3.6 El terremoto sacude Los Ángeles, se sentía de Westwood a San Fernando Valley

los angeles earthquake

Afortunadamente, no hubo daños reportados. De hecho, Los Ángeles recibe terremotos de este tamaño con relativa frecuencia.

“Recibimos estos terremotos de tamaño con bastante frecuencia”, el sismólogo Zachary Reeves al Los Angeles Times. “Cualquier daño severo sería bastante improbable”.

Una réplica de 2,0 años siguió al terremoto.

A principios de este mes, se informó que los sismólogos están trabajando para publicar pronósticos de terremotos para el público. Utilizando datos de terremotos más pequeños – similar al shaker de 3,6 del lunes – para predecir terremotos más grandes por venir.

Mientras que se creía previamente que los temblors más pequeños relevan la tensión en líneas de avería importantes, el sismólogo ahora dice que la probabilidad de un terremoto grande se levanta si la actividad sísmica moderada ocurre cerca de una línea de falla grande.

“Los grandes terremotos pueden venir en grupos. Y uno puede desencadenar el otro “, dijo el sismólogo estadounidense Ned Field, autor del nuevo modelo de pronóstico.
“Si usted tiene más cosas pequeñas surgiendo, usted tiene más oportunidades para que uno de esos crezca en algo grande,” campo agregado.

Afortunadamente, la coctelera del lunes estaba en una falla de tendencia al este y era “demasiado pequeña para asignar a una falla mapeada”, según los sismólogos Lucy Jones.

Ahora, más que nunca, es importante ser proactivo sobre la preparación y la seguridad del terremoto.

Julian De La Torre es un experto en la inspección de la fundación de Los Ángeles, los contratistas de la fundación y la reparación de la fundación. La empresa Julian, Julian Construction, ha inspeccionado más de 15.000 estructuras, trabajando con empresas de ingeniería y departamentos locales de construcción y seguridad. La compañía ha hecho más reparación de la fundación en Los Ángeles que cualquier otra compañía en el área sobre los últimos cinco años.

3.6 Earthquake Rattles Los Angeles, Felt from Westwood to San Fernando Valley

los angeles earthquake

Sleepy Angelinos were awakened by a 3.6 earthquake Monday night.

The tremor struck the Westwood area around 11:20 pm, with the epicenter located just west of the Sepulveda Pass of the 405 freeway.

The U.S. Geological Survey categorized the quake as a 4 and 5 intensity, which was predominately felt near Westwood and into the San Fernando Valley, with residents also reporting shaking from Los Feliz, Silver Lake and Glendale.

Luckily, there was no damage reported. In fact, Los Angeles gets earthquakes of this size relatively frequently.

“We get these size earthquakes fairly frequently,” seismologist Zachary Reeves to the Los Angeles Times. “Any severe damage would be pretty unlikely.”

A 2.0 aftershock followed the earthquake.

Earlier this month, it was reported that seismologists are working to release earthquake forecasts for the public. Using data from smaller quakes – similar to Monday’s 3.6 shaker – to predict larger earthquakes to come.

While it was previously believed that smaller temblors relieve stress on major fault lines, seismologist now say the likelihood of a large earthquake rises if moderate seismic activity occurs near a large fault line.

“Big earthquakes can come in clusters. And one can trigger the other,” U.S. Geological Survey seismologist Ned Field, author of the new forecasting model told the Times.

“If you have more little things popping off, you have more opportunities for one of those to grow into something big,” Field added.

Fortunately, Monday’s shaker was on an east-trending fault and was “too small to assign to a mapped fault,” according to seismologists Lucy Jones.

Now, more than ever, it’s important to be proactive about earthquake preparation and safety.

Julian De La Torre is an expert in Los Angeles foundation inspection, foundation contractors and foundation repair. Julian’s company, Julian Construction, has inspected over 15,000 structures, working with engineering firms and local departments of building & safety. The company has done more foundation repair in Los Angeles than any other company in the area over the last five years.

Sismólogos Esperan dar Pronósticos de Terremotos Públicos

earthquake
Mientras que los sismólogos no pueden predecir exactamente cuándo y dónde ocurrirá el próximo gran terremoto, muchos esperan proporcionar al público un servicio de pronóstico sísmico que informaría a las diversas comunidades de California sobre cuándo y dónde es más probable que ocurran las posibilidades de un terremoto mayor.

“Creo que la era del pronóstico del tiempo sísmico está sobre nosotros”, dijo el sismólogo Thomas H. Jordan al diario Los Angeles Times.

“Ahora, no podemos hacer el tipo de predicciones detalladas que los meteorólogos pueden hacer”, explicó. Pero no es que no sepamos nada. Sabemos algo … En mi opinión, usted quiere que el público sepa todo lo que los sismólogos conocen, y básicamente podemos darle un pronóstico sobre una base semanal o diaria “.

Los sismólogos, como Jordan, están presionando por una aplicación que podría actualizar un mapa que muestra diferentes áreas de California que están en mayor riesgo de un terremoto.

De manera similar a los patrones climáticos siguientes, los sismólogos siguen cuando los terremotos más pequeños afectan a puntos sensibles – áreas próximas a una falla mayor (como la falla de San Andreas) – que aumentan las posibilidades de activar fallas mayores.

Por ejemplo, un pequeño terremoto que ocurre junto a la línea de falla de San Andrés en Los Ángeles podría desencadenar un terremoto de magnitud 7 o mayor.

A diferencia de la previsión meteorológica, las previsiones de terremotos tienen mayor margen de error. Según datos recientemente publicados en las Seismological Research Letters, sólo la mitad de los grandes terremotos son precedidos por temblores más pequeños.

La última vez que California experimentó un terremoto de una magnitud 7 o más fue en 1857. Antes de que el terremoto de 7,8 ocurriera, terremotos más pequeños ocurrieron cerca de la punta septentrional de la falla de San Andreas.

Llevando hasta el terremoto masivo, 6.1 y 5.6 terremotos de magnitud lo precedieron. Luego, apenas dos horas más tarde, el terremoto de 7,8 grados golpeó el condado de Monterey y bajó a Los Ángeles en sólo dos minutos.

“Los grandes terremotos pueden venir en racimos. Y uno puede desencadenar el otro “, explicó el sismólogo estadounidense Ned Field.

Aunque anteriormente se creía que los terremotos más pequeños alivian el estrés en la zona, los sismólogos ahora están sugiriendo que los terremotos aumentados en una sola área podrían señalar un “aumento de estrés” que podría predecir un terremoto más grande por venir.

Ahora, más que nunca, es importante ser proactivo sobre la preparación y la seguridad del terremoto.

Julian De La Torre es un experto en la inspección de la fundación de Los Ángeles, los contratistas de la fundación y la reparación de la fundación. La empresa Julian, Julian Construction, ha inspeccionado más de 15.000 estructuras, trabajando con empresas de ingeniería y departamentos locales de construcción y seguridad. La compañía ha hecho más reparación de la fundación en Los Ángeles que cualquier otra compañía en el área sobre los últimos cinco años.

¿Habla español? Echa un vistazo a Julian Construction en español AQUÍ!

 

Seismologists Hoping to Give Public Earthquake Forecasts

earthquake

While seismologists cannot predict exactly when and where the next major earthquake will occur, many are hoping to provide the public with an earthquake forecast service that would inform California’s various communities of when and where the chances for a major earthquake are more likely to happen.

“I think the age of seismic weather forecasting is upon us,” seismologists Thomas H. Jordan told the Los Angeles Times.

“Now, we can’t make the kind of detailed predictions that meteorologists can make,” he explained. “But it’s not like we know nothing. We know something … In my view, you want the public to know everything the seismologists know, and we can basically give you a forecast on a weekly basis or daily basis.”

Seismologists, like Jordan, are pushing for an app that would be able to update a map that shows different areas of California that are at a higher risk for an earthquake.

Similar to following weather patterns, seismologists follow when smaller earthquakes strike sensitive spots – areas next to a major fault line (like the San Andreas fault) – which increase the chances of activating larger faults.

For example, a small earthquake that occurs next to Los Angeles’ San Andreas fault line could trigger a magnitude 7 or higher earthquake.

Unlike weather forecasting, earthquake forecasts have more room for error. According to data recently published in the Seismological Research Letters, only half of large earthquakes are preceded by smaller tremors.

The last time California experienced an earthquake of a 7 magnitude or higher was back in 1857. Before the 7.8 earthquake erupted, smaller earthquakes occurred near the northern tip of the San Andreas fault.

Leading up to the massive quake, 6.1 and a 5.6 magnitude earthquakes preceded it. Then, just two hours later, the 7.8 quake struck Monterey County and made its way down to Los Angeles in just two minutes.

“Big earthquakes can come in clusters. And one can trigger the other,” U.S. Geological Survey seismologist Ned Field explained.

While it was previously believed that smaller earthquakes relieve pent-up stress in the area, seismologists are now suggesting that increased earthquakes in one single area could signal “increased stress” which would predict a larger earthquake to come.

Now, more than ever, it’s important to be proactive about earthquake preparation and safety.

Julian De La Torre is an expert in Los Angeles foundation inspection, foundation contractors and foundation repair. Julian’s company, Julian Construction, has inspected over 15,000 structures, working with engineering firms and local departments of building & safety. The company has done more foundation repair in Los Angeles than any other company in the area over the last five years.

Strongest Earthquake in 100 Years Strikes Mexico, 32 People Dead

mexico earthquake

An 8.1 earthquake shook Mexico’s southern coast just before midnight on Thursday. The massive quake is the largest earthquake Mexico’s encountered in nearly 100 years.

The seismic activity was felt from Mexico City all the way to Guatemala, leaving 32 people dead.

The United States Geological Survey (USGS) issued a red alert after the earthquake, warning of  human loss and widespread damage.

“High casualties and extensive damage are probable and the disaster is likely widespread. Past red alerts have required a national or international response,” the alert read.

The earthquake likewise triggered a tsunami warning in Mexico, with the National Weather Service Pacific Tsunami Warning predicting waves as tall as 10 feet headed for the coast of Mexico.

Already, 1.85 million homes in the country have lost power and water, which may take up to 48 hours to be restored.

Aftershocks from the quake have added to the devastation, with at least five tremors – measuring above a 5.0 magnitude — already recorded.

As the eastern regions of the United States prepare for Hurricane Irma’s landfall, Los Angeles Mayor, Eric Garcetti, warned Angelinos about the possibility of such an earthquake affecting Southern California.

los angeles

“Friendship means standing together in good times and bad, and the thoughts of all Angelenos are with the people of southern Mexico who are recovering today following last night’s powerful earthquake,” Mayor Garcetti said in a statement about Mexico’s massive earthquake.

Garcetti likewise urged Californians to be proactive about earthquake safety, especially in the wake of such a devastating disaster.

“Californians are well-acquainted with the devastating potential of seismic activity, and the City of Los Angeles is proactively preparing for a disaster that is widely understood to be a matter of ‘when’ and not ‘if,’” his statement continued.

“Angelenos should be informed about what the City is doing to preserve life and property in the event of a major earthquake. Everyone in Los Angeles is encouraged to review the preparedness tips compiled by the Red Cross, and take the necessary steps to prepare their own families and communities — such as storing food and water, and developing readiness plans,” he concluded.

California is currently working on an early earthquake warning system, in addition to Los Angeles’ recent measure requiring the seismic retrofit of all wood-frame, soft story structures.

Recent data showed that the San Andreas fault line is due for a major earthquake, with some seismologists predicting an 8.2 in magnitude.

Since earthquakes started being recorded, a quake has occurred along the San Andreas fault line – near areas like the Grapevine – every 100 years, and it’s been 160 years since the last major earthquake occurred there.

“With 300 miles of fault all going in the same earthquake, you have everybody affected at the same time,” seismologist Lucy Jones told the L.A. Times. “The San Andreas is the one that will produce the earthquake that’s going to cause damage in every city.”

Now, more than ever, it’s important to be proactive about earthquake preparation and safety.

Julian De La Torre is an expert in Los Angeles foundation inspection, foundation contractors and foundation repair. Julian’s company, Julian Construction, has inspected over 15,000 structures, working with engineering firms and local departments of building & safety. The company has done more foundation repair in Los Angeles than any other company in the area over the last five years.

Buying a Home? Here’s How to Tell if the Foundation is Structurally Sound

Purchasing a home is a major investment.

If you’ve been looking at properties that were built before 1930, there’s a chance these buildings may have some foundation issues.

Here are 4 things to be on the look for when shopping for older real estate:

  1. Doors and windows that stick: While this may not sound like a huge issue – let alone a deal breaker – when a property’s doors and windows begin to stick, this could mean there are larger problems with the home’s foundation. Whether the foundation’s structural supports have improper spacing or are rotting, both can be expensive to repair and/or replace.
  2. Uneven/sloping floors: While doing your walk-through, if you notice uneven or sloping floors, this should be a big red flag. For starters, this means the home is not level. The underlying causes for this can range from cracks in the property’s foundation to severe damage, rotting or settlement to its supporting structures (like its posts, piers, girders, joists or even its footings).
  3. Cracks in the walls above the building’s doors and windows: If cracks in these areas look like they’re growing in length and/or width, this can also be a sign of foundation damage. It’s important to note how easy it is to mask these types of cracks with simple repairs, so if you see fresh paint or other repairs in these areas, make sure you ask the agent about what work has been done to the home and why.
  4. Foundation cracks: Finally, after you have inspected the home’s interior and exterior, ask to see the basement or crawl space of the structure. If you see any cracks in the walls, be sure to contact a foundation inspector to examine the area. Foundation repair companies, like Julian Construction, can conduct a thorough inspection before you purchase the property.

Julian De La Torre is an expert in Los Angeles foundation inspection, foundation contractors and foundation repair. Julian’s company, Julian Construction, has inspected over 15,000 structures, working with engineering firms and local departments of building & safety. The company has done more foundation repair in Los Angeles than any other company in the area over the last five years.

Here’s Why Your Brick Foundation Needs Replacement

brick foundation repair

Brick foundations are very common in Los Angeles.

However, properties that were built before 1910 with a brick foundation, might not have the necessary structural reinforcement needed to survive an earthquake.

Brick foundations that have been constructed without reinforced steel are identified as “unreinforced masonry,” and typically require foundation replacement.

It’s important to identify and remedy any signs of foundation problems early on.

brick foundation replacement los angeles

On the exterior if you’ve noticed any cracks, missing bricks or grout that’s turning to powder, it’s important to get your foundation inspected by a professional foundation contractor.

And on the interior, if you have any doors or windows that stick, your floors slope or are uneven, have hairline fractures in your tile or walls, these could all be signs that your brick foundation is failing.

There are a few repair methods a foundation company can use to fix structural issues with your brick foundation.

First, a foundation specialist will do a detailed assessment of your structure. From there, they’ll suggest which repair option will be the best correction method to fix your foundation.

Most likely, you contractor will recommend installing a sister foundation or doing a completely new foundation.

Like most structures, brick foundations will wear out over time. Wet soil, seismic activity and deterioration of the mortar that holds the bricks together, can all lead to degradation and damage to your foundation.

Julian De La Torre is an expert in Los Angeles foundation inspection, foundation contractors and foundation repair. Julian’s company, Julian Construction, has inspected over 15,000 structures, working with engineering firms and local departments of building & safety. The company has done more foundation repair in Los Angeles than any other company in the area over the last five years.

Budget Cuts May Kill California’s Earthquake Warning System

The early earthquake warning system, which has received approval from elected officials in both parties, may be facing another bump in the road.

The system, which was set for limited release early next year, is on President Trump’s chopping block, thanks to newly proposed budget cuts.

Luckily, both Republicans and Democrats have rallied behind the early earthquake warning system and are working to save it.

Both parties are asking for a reversal of these budget cuts, and requesting that Congress disregards President Trump’s latest budget proposals.

Thanks to a House of Representatives subcommittee, Congress is expected to approve a new budget plan that would continue funding for California’s early earthquake warning system.

In May, congress appointed $10.2 million for the warning system’s present budget year … and President Trump has allocated zero dollars for next year’s budget.

The early earthquake warning system is estimated to cost $16.5 million a year to run and operate and a total of $38.2 million to build.

The earthquake warning system could give as much as a minute’s notice before the shaking of a major quake makes its way to densely populated cities and public areas.

The system would allow places like classrooms, offices, malls, amusement parks, hospitals, police stations and fire stations to have access to these alerts, saving many more lives with extra seconds to drop and cover.

Other countries around the world have already implemented similar earthquake warning systems, like Mexico and Japan.

For now, it’s important to make sure you’re doing everything you can to prepare for the next “Big One.”

“The Big One is coming,” USGS research geophysicist Ken Hudnut told the L.A. Times. “The threat of the Big One on the southern San Andreas fault – the Coachella segment, where they have the big concerts down near palm springs – that threat is especially real.”

Julian De La Torre is an expert in Los Angeles earthquake retrofitting, foundation inspection, foundation repair and foundation replacement. As the founder of Julian Construction, Julian and his company have inspected over 15,000 structures.

Julian Construction routinely works with engineering firms and local departments of building & safety. The company has done more seismic retrofit work in Los Angeles than any other company in the area over the last five years.

Everything You Need to Know About Earthquake Retrofitting

earthquake damage

As a California resident, you know that earthquakes pose a real threat.

As we saw with the devastating Northridge earthquake of 1994, large seismic quakes can cause serious damage to buildings and homes. Thanks to advances in structural engineering, earthquake retrofitting is one of the most efficient ways to prevent massive damage to your home – injuries and even death – in the event of a massive earthquake.

When the earth shakes, buildings are more likely to be displaced from their concrete foundation or collapse if they are not properly secured to the ground.

Earthquake retrofitting increases a building or home’s resistance to this side-to-side motion, thus incurring less damage and destruction.

There are few measures you can implement to retrofit a structure, depending on the type of construction of the building needing reinforcing.

Foundation bolting is when bolts are added, either with or without plates, to the existing wooden framing known as a sill plate. Bolts are typically attached to the wood that sits on top of the concrete. Whether the foundation is lacking bolts or if the older existing bolts are already in place and in good shape — but too far apart — careful installation of new foundation bolts will add strength to the structure. During the Northridge earthquake, homes lacking foundation bolts slid off their foundations and collapsed.

Cripple wall bracing is typically used to retrofit structures that have a wood-frame foundation in addition to a concrete foundation. The crawl space area located under the property and can be just a few inches in height to a few feet, and is the area below where the floor of the home is connected to its foundation. In large earthquakes, cripple wall failure was the main source of structural damage causing the first floor of a building to collapse to the ground level. During a retrofit, the cripple wall is braced to keep it from giving out during a quake. By adding structural grade plywood framing to the wood framed foundation (known as a shear wall) the house will be able to withstand the side-to-side or back-and-forth shaking of an earthquake.

Soft story retrofits are typically used on multi-family apartment structures, condominiums and homes that have a large open space, like a tuck-under parking, located below the first floor living area. They’re referred to as “soft stories” because there is not enough reinforcement to protect the structure from the movement of an earthquake. In some soft story retrofits, a contractor will install plywood to brace the walls or install a steel moment frame to secure the area.

If your home was built prior to 1950, there’s a good chance your foundation is not seismically sound. Therefore, it’s important to contact a foundation specialist to inspect the area.

Julian De La Torre is an expert in Los Angeles foundation inspection, foundation contractors and foundation repair. Julian’s company, Julian Construction, has inspected over 15,000 structures, working with engineering firms and local departments of building & safety. The company has done more foundation repair in Los Angeles than any other company in the area over the last five years.

New Maps Show Major Fault Lines Run Under L.A.’s Most Expensive Real Estate

beverly hills

New fault boundaries have raised concerns for some of the priciest parts of Los Angeles.

According to new fault maps – which were released on Thursday – Beverly Hills, Santa Monica, Brentwood, Pacific Palisades, Westwood and Century City have been included in the Newport-Inglewood fault zone.

While this isn’t news for certain areas of the Westside, the remapped fault boundaries affect some of the highest-priced real estate in L.A. and, as a result, could thwart future development of those areas because building on a fault line is restricted.

“It is important to not build on faults,” Tim Dawson, senior engineering geologist for the California Geological Survey, told the L.A. Times.

“Building foundations will tend to break when the earth moves beneath them, damaging the building in the process.”

This is the first time the California Geological Survey has released official maps of these earthquake fault lines, connecting the Hollywood fault (which runs under Hollywood and Beverly Hills) to the Newport-Inglewood fault (which runs through Culver City, Pico-Robertson and Mid City).

While the new fault boundaries could halt future development of these areas, it will not affect the current structures that already sit on or along these fault lines.

Buildings that are constructed on fault lines have a much higher risk of damage or collapse in the event of an earthquake.

The remapping of these fault lines is part of Los Angeles’ earthquake safety initiative, aiming to create more seismically safe structures and earthquake awareness throughout the city. Once these fault maps have been finalized, developers will need to hire a geologist to determine the viability of certain parts of Los Angeles before starting construction on land near or directly on these faults.

“Extra precautions should be taken to ensure new buildings are not located on the trace of an active fault,” Dawson stressed. “The purpose of the investigation is to identify if there are active faults present, and if there are, then they must be avoided.”

If your home was built prior to 1950, there’s a good chance your foundation is not seismically sound. Therefore, it’s important to contact a foundation specialist to inspect the area.

Julian De La Torre is an expert in Los Angeles foundation inspection, foundation contractors and foundation repair. Julian’s company, Julian Construction, has inspected over 15,000 structures, working with engineering firms and local departments of building & safety. The company has done more foundation repair in Los Angeles than any other company in the area over the last five years.