Building earthquake-resistant homes by properly visualizing ground vibrations. By considering this alongside the traditional "SWS test," we can prepare for seismic disasters.
Building earthquake-resistant homes by properly visualizing ground vibrations "Japan's first" new standard for earthquake measures, micro-vibration exploration system "Earthquake Eye" In the event of an earthquake, even within the same area, the way the ground shakes can differ depending on the surface soil and the presence of embankments. These differences in shaking can significantly impact the damage to homes. The advanced micro-vibration exploration system "Earthquake Eye" enables precise measurements at the individual lot level, serving as a key tool for future residential ground investigations aimed at earthquake preparedness.
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basic information
Features of the Microtremor Exploration System "Seismic Eye" 1. No excavation of the ground (non-destructive measurement) Since the measuring device is simply placed on the surface, measurements can be taken not only on soil but also on concrete surfaces and tiled areas. 2. No noise, vibration, or exhaust during the survey The measuring device does not produce sound or vibration, making it an environmentally friendly survey method. 3. Measurements at a single location are completed in a short time Measurements at one location take about 20 minutes. Microtremor exploration is a method of investigating ground characteristics based on vibrations. While specific ground bearing capacity requires SWS testing, combining SWS testing with microtremor exploration allows for a more detailed understanding of the ground characteristics at the survey site. *This is a new service developed through a joint research project with the National Research Institute for Earth Science and Disaster Resilience and Hakusan Engineering Co., Ltd., aimed at housing business companies, and the technology is currently under patent application at the National Research Institute for Earth Science and Disaster Resilience.
Price information
Latest survey at the regular price of ¥100,000 Special price of ¥50,000 (excluding tax) *The special price applies only to land planned for construction with Japan Home or existing residential lots. (Period: Until applications received by March 28, 2019)
Price range
P2
Delivery Time
P3
Applications/Examples of results
■Making land and buildings even more secure and safe. Microtremor exploration will surely become the "common sense" of the future. Is it earthquake-resistant and structurally safe? Even if there are standards, I believe it is important to know where those standards lie. Housing companies create plans based on the requests of the clients. However, clients often do not understand the technical aspects. There is also the illusion that once building confirmation is obtained, safety is guaranteed. Our company has established not only the seismic standards of the Building Standards Act but also our own unique seismic standards. This commitment is based on protecting families and providing a safe and secure home. However, safety and security cannot be ensured by this alone; the ground is also crucial. Recently, previously hidden ground risks have come to light, leading to cases where the credibility of major companies has been undermined. Ground Network actively opens up information about ground risks, and we agree with their stance of advocating for housing construction tailored to ground characteristics. With standardized housing, we can make land, ground, and buildings even more secure and safe using the microtremor exploration system "Earthquake Eye." Companies that hold the belief that they will not build homes without this will gain the trust of their clients. Microtremor exploration will become the "common sense" when building homes. (Takashi Uchibori, President of Jibun House Co., Ltd.)
Detailed information
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A house that can withstand both normal vertical loads and earthquakes during emergencies is the foundation of a safe and secure home. First, the "SWS test" and the micro-vibration exploration system "Earthquake Eye" should be conducted together. Depending on the situation, this can help avoid excessive seismic measures, reducing unnecessary costs and expanding the flexibility of housing design plans.
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Survey of Residents: Do you want to investigate the susceptibility to shaking during an earthquake when purchasing land for housing? Over 80% of respondents indicated that they want to know about the susceptibility of their home's foundation to shaking. This highlights a strong interest in earthquakes and ground conditions, revealing a potential demand for specialized ground surveys focused on earthquakes.
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You can understand the ground's susceptibility to shaking at the survey site. Even if the same earthquake occurs, you can determine whether that location is more or less prone to shaking compared to other places. Additionally, by comparing it with the ground amplification ratios of 250m mesh published by the National Research and Development Agency for Disaster Science and Technology, you can compare it with estimated and representative values for that area. Depending on the ground's susceptibility to shaking at the construction site, it also becomes possible to consider the design of the building's seismic resistance and other factors.
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Benefits of visualizing ground risk. By implementing "Earthquake Eye," we can understand the susceptibility of individual residential lots to shaking, which was previously unknown. By visualizing and understanding these ground risks during emergencies, residential designers can effectively propose new housing structural designs and seismic performance evaluations that take ground characteristics into account, as well as seismic retrofitting for existing homes. This can serve as a significant advantage over other businesses. The microtremor survey service report is issued as "My Home's Ground Medical Record," allowing us to see the shaking susceptibility of individual residential lots in numerical form, thereby understanding the risks when an earthquake occurs.
Company information
In earthquake-prone Japan, the occurrence of earthquakes cannot be avoided. However, when building a house, one can "choose the foundation." The difference between a house that has sunk due to liquefaction from an earthquake and a house that has sustained no damage just across the road lies in the foundation. By investigating the land's foundation, selecting land with as strong a foundation as possible, and conducting appropriate improvement work if the foundation is weak, the damage from earthquakes can be minimized. What is truly frightening is not the earthquake itself, but the foundation. In other words, if one can correctly understand the foundation, the damage from earthquakes can be kept to a minimum. Until now, it cannot be said that risk information about land has been sufficiently disclosed when consumers purchase real estate. However, in order for everyone to obtain a safe home, an environment where accurate information about the foundation can be easily accessed, even by non-experts, is necessary.