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Report of properties in disaster area
The Great East Japan Earthquake / Tottori Earthquake

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The Great East Japan Earthquake
Report of properties by conventional construction method and TNF construction method
●Even with a "seismic intensity of less than 6" it firmly suppresses the occurrence of liquefaction
  • The upper part of this building's soil is piled up about 19meters in silt layer.
  • The influence by the earthquake is hardly seen because the building responds with the whole integrated reinforcement layer so the input of the ground motion was reduced between the lower reinforcement layer and the ground.
  • The occurrence of liquefaction is firmly suppressed by the "enclosing effect", the restraint of the lower ground by the whole reinforcement layer.
  • Even if liquefaction occurs in some places, it restraints with the integrated whole reinforcement layer.
Name of the property Construction date Construction area（m2） Construction volume（m3） Scale Construction type
Home center A April, 2009 8,989 17,618 one-story building S Structure
Store B April, 2009 2,485 5,322 one-story building S Structure
Store C April, 2009 2,630 6,602 one-story building S Structure
Location: Mukochi City, Ibaraki Prefecture
Date of photos: March 17, 2011
  • TNF construction method
    Open for business without any interior or exterior damages
  • Eliminate the Risk of Differences in Level （？）, cracks, etc.
  • Eliminate floor cracks
  • Map of the building
  • Boring log
  • Conventional construction method of the nearby stores
    Nearby store A: Liquefaction in various places
  • Nearby store A: The pavement is waving (above)
    There is a gap between the building and the pavement (bottom)
  • Nearby store B: Closed; entrance door glass is broken (above)
    Also a large crack in the parking lot (bottom)
●Even with a "seismic intensity of 6 strong" no failures such as uplifting of the building
  • The upper part of this building's soil is piled up in the loam layer by 10meters or more.
  • The vibration is reduced in the building where the foundation is constructed by the TNF construction method, whereas the vibration affect directly to buildings constructed by the supporting piles.
  • Even if subsidence occurs, there is no uplifting of the building or other failures.
Name of the property Construction date Construction area（m2） Construction volume（m3） Scale Construction type
Home center A April, 2010 9,931 15,318 one-story building S Structure
Location: Utsunomiya City, Tochigi Prefecture
Date of photos: March 29, 2011
  • TNF construction method
    Open for business although a little damage on the exterior
  • Because the building and the surrounding ground are sinking together, there is no difference in level
  • No differential settlement
  • Map of the building
  • Boring log
  • Conventional construction method of the nearby stores
    Nearby supermarket: Closed from damages in the ceiling and windows
  • six-story apartment: The building and the ground subsided together leading to an uplift
  • six-story apartment: The pavement is waving
Tottori Earthquake
Report of properties by conventional construction method and TNF construction method
●Even with a "seismic intensity of less than 6" no failures such as uplifting of the building
  • The upper soil of this building has 8meters thick viscous soil layer with an N value of 1 to 5 under the sandy soil layer of 8meters.
  • The vibration is reduced in the building where the foundation is constructed by the TNF construction method, whereas the vibration affect directly to buildings constructed by the supporting piles.
  • Even if subsidence occurs, there is no uplifting of the building or other failures.
Name of the property Construction date Construction area（m2） Construction volume（m3） Scale Construction type
Supermarket A October, 2014 2,947 4,399 one-story building S Structure
Location: Kurayoshi City, Tottori Prefecture
Date of photos: November 1, 2016
  • TNF construction method
    No noticeable damages to the interior or the exterior
  • Map of the building
  • Boring log
  • Conventional construction method of the nearby stores
    Nearby store (grocery / clothing)
  • Difference in levels by the entrance
  • The ceiling board of the interior