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[WIB Construction Method Case Study] Vibration Control in Precision Machining Factory

[WIB Construction Method Case Study] Vibration Control in Precision Machining Factory

Designed and constructed WIB work directly beneath the newly built factory! A case where the environment became suitable for the normal operation of precision machining equipment.

At Maetani Architectural Office located in Osaka Prefecture, vibrations from demolition and transportation activities of a nearby metal recycling company were affecting the operation of precision machining equipment. Therefore, during the expansion of the factory, the 'WIB method' was adopted as a vibration countermeasure, and a design targeting micro-vibrations was implemented. We investigated the impact of vibrations on the existing factory's precision machining equipment and based on this data, designed and constructed directly beneath the new factory. As a result, resonant vibrations in the range of 10 to 16 Hz were reduced by 6 to 14 dB (to 1/5 to 1/2 of the original vibrations), creating an environment suitable for the normal operation of precision machining equipment. 【Case Overview】 ■ Construction Location: Osaka Prefecture ■ Client: Maetani Architectural Office Co., Ltd. ■ Vibration Source: Demolition work vibrations ■ Preservation Target: Precision machining factory ■ Countermeasure Method: Plate-type WIB method (honeycomb cell type) ■ Construction Position: Directly beneath the receiving side *For more details, please refer to the PDF document or feel free to contact us.

  • Ground foundation construction method
  • Ground improvement
  • Ground improvement materials

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[WIB Construction Method Case Study] Road Traffic Vibration Countermeasures for Medical Facilities

[WIB Construction Method Case Study] Road Traffic Vibration Countermeasures for Medical Facilities

Achieved a reduction of 6 to 10 dB in outstanding vibrations, meeting the vibration reduction target! Construction case of the plate-type WIB (honeycomb cell type).

At Mitsui Home in Chiba Prefecture, there were concerns about the impact of vibrations on work within a medical facility being constructed along a road frequently used by large vehicles. To address this, the 'WIB method' was implemented directly beneath the medical facility and the adjacent pharmacy. Using evaluation criteria for micro-vibrations aimed at precision equipment, a vibration reduction target was set. As a result, dominant vibrations in the 10-20Hz range were reduced by 6-10dB, achieving the vibration reduction target. [Case Summary] - Construction Location: Chiba Prefecture - Client: Mitsui Home Co., Ltd. - Vibration Source: Road traffic vibrations - Preservation Target: Medical facility - Countermeasure: Plate-type WIB method (honeycomb cell type) - Construction Position: Directly beneath the receiving side *For more details, please refer to the PDF document or feel free to contact us.

  • Ground foundation construction method
  • Ground improvement
  • Ground improvement materials

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【WIB Method Construction Case】Vibration Control at Construction Sites

【WIB Method Construction Case】Vibration Control at Construction Sites

Compare the vibration levels of areas without countermeasures and areas with WIB countermeasures! Confirmed a reduction of more than 6dB in both horizontal and vertical directions.

At Daiho Construction in Fukushima Prefecture, there were concerns about the impact of construction vibrations from the government building on surrounding residences. In response, the 'WIB method' was implemented around the government building. After the measures were taken, vibration measurements were conducted to investigate the impact of construction work on the surrounding area. A comparison of vibration levels between untreated areas and those treated with the WIB method showed a reduction of over 6dB in both horizontal and vertical directions. The vibrations were halved. 【Case Overview】 ■ Location: Fukushima Prefecture ■ Client: Daiho Construction Co., Ltd. ■ Vibration Source: Construction work vibrations ■ Preservation Target: Residences around the government building ■ Countermeasure: Wall-type WIB method (screen type) ■ Installation Position: Vibration propagation path *For more details, please refer to the PDF document or feel free to contact us.

  • Ground foundation construction method
  • Ground improvement
  • Ground improvement materials

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[WIB Construction Method Case Study] Vibration Control in Steel Manufacturing Plant

[WIB Construction Method Case Study] Vibration Control in Steel Manufacturing Plant

In the reconstruction of the cafeteria building, measures were implemented directly beneath the structure! A case was confirmed where vibration reduction of 8 to 11 dB was achieved.

At Ishiguro Construction in Toyama Prefecture, road traffic vibrations from the surrounding roads of the steel manufacturing facility and operational vibrations from the truck scale within the facility were propagating to the cafeteria building on the same site, causing vibration issues. Therefore, during the reconstruction of the cafeteria building, the 'WIB method' was implemented directly beneath the building. Vibration measurements conducted before and after the countermeasures confirmed that vertical vibrations within the cafeteria building were reduced by 8 to 11 dB. [Case Summary] ■ Location: Toyama Prefecture ■ Client: Ishiguro Construction Co., Ltd. ■ Vibration Sources: Road traffic vibrations, operational vibrations within the facility ■ Protected Target: Cafeteria building within the steel manufacturing facility ■ Countermeasure Work: Plate-type WIB (honeycomb cell type) ■ Installation Position: Directly beneath the receiving side *For more details, please refer to the PDF document or feel free to contact us.

  • Ground foundation construction method
  • Ground improvement
  • Ground improvement materials

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Contributing to vibration, liquefaction, and differential settlement measures! WIB method [Helpful materials provided]

Contributing to vibration, liquefaction, and differential settlement measures! WIB method [Helpful materials provided]

Can be used for residential areas, facilities, and roads! Enhances the bearing capacity of weak ground and prevents building settlement and liquefaction.

The "WIB method" is a ground vibration mitigation technique that constructs a rigid plate-like or wall-like cellular structure (WIB structure) at the required depth underground using ground improvement piles. This method reduces environmental vibrations from road traffic, railways, construction work, factories, events, and seismic forces on structures during earthquakes. It consists of a replacement soil (vibration isolation layer) that suppresses and blocks the propagation of ground vibration waves, and a cellular structure (damping layer) that absorbs and blocks vibrations. The combined effects of vibration isolation and damping achieve the target vibration reduction. Additionally, it simultaneously exhibits the effects of "vibration mitigation" (improving vibration environments and reducing seismic motion), "liquefaction countermeasures," and "uneven settlement countermeasures," thereby keeping the overall ground improvement costs low. 【Features】 ■ Usable for residential areas, facilities, and roads ■ Reduces seismic forces on structures during earthquakes ■ Enhances the bearing capacity of soft ground, preventing building settlement and liquefaction ■ Keeps overall ground improvement costs low *For more details, please refer to the PDF materials or feel free to contact us.

  • Ground foundation construction method
  • Ground improvement
  • Ground improvement materials

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[WIB Construction Method Case Study] Traffic Vibration Mitigation for Existing Roads

[WIB Construction Method Case Study] Traffic Vibration Mitigation for Existing Roads

Confirmed an average vibration reduction of 7dB and a maximum of 13dB at vibration level Lmax! Comfort has been improved!

In Kanagawa Prefecture, traffic vibrations caused by large vehicles passing through the roads have been affecting the living environment along the routes, leading to complaints from residents. As a response, road renovation work was carried out, and the 'WIB method' was implemented directly beneath the road. Vibration measurements were conducted before and after the countermeasures. When comparing the vibrations at the boundary between public and private properties of four residential buildings along the road before and after the measures, an average reduction of 7 dB and a maximum reduction of 13 dB in the vertical vibration level Lmax was confirmed, resulting in improved livability. [Case Summary] ■ Location: Kanagawa Prefecture ■ Vibration Source: Road traffic vibrations ■ Preservation Target: Several residential buildings along the road ■ Countermeasure Method: Plate-type WIB (honeycomb cell type) ■ Installation Position: Directly beneath the vibration source *For more details, please refer to the PDF document or feel free to contact us.

  • Ground foundation construction method
  • Ground improvement
  • Ground improvement materials

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[WIB Construction Method Case Study] Road Traffic Vibration Mitigation for Detached Houses Near a Logistics Center

[WIB Construction Method Case Study] Road Traffic Vibration Mitigation for Detached Houses Near a Logistics Center

The results showed a damping effect that exceeded expectations! It has become a foundation that can be comfortably and safely lived on in the future!

The detached houses in Okayama Prefecture are close to a logistics center, and the front road sees a large number of heavy vehicles passing frequently 24 hours a day, raising concerns that these traffic vibrations could affect the living environment of the newly built houses. The 'WIB method' was implemented directly beneath the detached houses. This achieved an average vibration reduction of 5dB (about 55% of the original vibration), resulting in a reduction effect that exceeded expectations within a limited budget. Additionally, the front road is planned to be widened in the future, and its impact has been considered from this stage, ensuring that the ground remains comfortable and safe for living in the future. [Case Overview] ■ Location: Okayama Prefecture ■ Client: Sanyu Soil Engineering Co., Ltd. ■ Vibration Source: Road traffic vibrations ■ Preservation Target: Detached houses near the logistics center ■ Countermeasure: Plate-type WIB method (honeycomb cell type) ■ Installation Position: Directly beneath the receiving side *For more details, please refer to the PDF document or feel free to contact us.

  • Ground foundation construction method
  • Ground improvement
  • Ground improvement materials

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[WIB Construction Method Case Study] Railway Vibration Countermeasures for Residential Areas Along Railways H29.2-3

[WIB Construction Method Case Study] Railway Vibration Countermeasures for Residential Areas Along Railways H29.2-3

Keep the vibration level below 60dB! To ensure greater vibration reduction, measures will be implemented directly beneath unused land!

A portion of a residential development site in Saitama Prefecture faces a railway, raising concerns about the impact on the living environment after the construction of homes. Therefore, the "WIB method" was implemented directly beneath the residences. Additionally, to ensure greater vibration reduction, countermeasures were also installed directly beneath the unused land. Vibration measurements were conducted before and after the countermeasures, resulting in a reduction of dominant vibrations in the 10-20Hz range by 10-14dB (to 1/5 to 1/3 of the original vibrations), keeping the vibration level below 60dB. [Case Overview] ■ Location: Saitama Prefecture ■ Client: Housing manufacturer ■ Vibration source: Railway vibrations ■ Preservation target: Residential buildings along the railway (a total of 4 buildings + unused land) ■ Countermeasures: Plate-type WIB method (directly beneath residences) and wall-type WIB method (directly beneath unused land) honeycomb cell type ■ Installation position: Directly beneath the receiving side (beneath residences) and along the propagation path (beneath unused land) *For more details, please refer to the PDF document or feel free to contact us.

  • Ground foundation construction method
  • Ground improvement
  • Ground improvement materials

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[WIB Construction Method Case Study] Railway Vibration Mitigation in Residential Development

[WIB Construction Method Case Study] Railway Vibration Mitigation in Residential Development

Evaluate the vibration levels for each type of train! Confirmed an average reduction of 6dB in the horizontal direction and 5dB in the vertical direction!

Vibrations from trains passing near the residential development site in Kanagawa Prefecture (currently Fujisawa SST) raised concerns about their impact on the living environment after the construction of the houses. In response, the 'WIB method' was implemented directly beneath each house. Vibration measurements on the ground were conducted before and after the countermeasures. When evaluating the vibration levels for each type of train, an average reduction of 6 dB in the horizontal direction and 5 dB in the vertical direction was confirmed. [Case Overview] ■ Location: Kanagawa Prefecture ■ Client: Ando & Associates Co., Ltd. ■ Vibration Source: Railway vibrations ■ Preservation Target: Residential houses along the railway (total of 11 buildings) ■ Countermeasure Work: Plate-type WIB method (honeycomb cell type) ■ Construction Position: Directly beneath the receiving side *For more details, please refer to the PDF document or feel free to contact us.

  • Ground foundation construction method
  • Ground improvement
  • Ground improvement materials

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[WIB Construction Method Case Study] Railway Vibration Countermeasures for Residential Areas Along Railways, July 2014, Tokyo

[WIB Construction Method Case Study] Railway Vibration Countermeasures for Residential Areas Along Railways, July 2014, Tokyo

Confirmed a vibration reduction of 4 to 5 dB! An example of measures taken directly beneath a house during its reconstruction!

In residential areas of Tokyo, vertical vibrations caused by passing trains were affecting the living environment. Therefore, during the reconstruction of the housing, the 'WIB method' was implemented directly beneath the residences. Vibration measurements on the ground were conducted before and after the countermeasures. As a result, a reduction of 4 to 5 dB was confirmed. 【Case Summary】 ■ Location: Tokyo ■ Client: Mitsui Home Co., Ltd. ■ Vibration Source: Railway vibration ■ Preservation Target: Houses along the railway ■ Countermeasure Method: Plate-type WIB (honeycomb cell type) ■ Installation Position: Directly beneath the receiving side *For more details, please refer to the PDF document or feel free to contact us.

  • Ground foundation construction method
  • Ground improvement
  • Ground improvement materials

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Improved Ground Improvement Method "WIB Method" [Helpful Materials Available Now!]

Improved Ground Improvement Method "WIB Method" [Helpful Materials Available Now!]

Simultaneously achieve environmental vibration reduction and liquefaction prevention in transportation, factories, and construction! Reliable technology for safety measures! This is our company's unique improved ground improvement method.

E&D Tech Design Co., Ltd.'s "WIB Method" is an improved ground method that reduces environmental vibrations from traffic, factories, and construction, as well as seismic shaking, while addressing liquefaction and enhancing and stabilizing the bearing capacity of weak ground. By using a rigid cell-type plate or wall structure, it simultaneously achieves liquefaction prevention and differential settlement prevention, making it a cost-effective method overall. Additionally, it can also address micro-vibrations that interfere with the operation of precision machinery and medical devices in high-tech industries. 【Features】 ■ Liquefaction prevention through strain suppression of the ground using a cell-form structure ■ Differential settlement prevention through improved horizontal bearing capacity of the ground using a plate structure ■ Vibration reduction value prediction and design based on ground surveys, achieving set targets ■ Recipient of the Minister of Education, Culture, Sports, Science and Technology Award for Scientific and Technological Achievement in 2011 ■ Capable of addressing micro-vibrations that affect medical devices *For more details, please refer to the catalog or feel free to contact us.

  • Ground improvement materials

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Vibration Control WIB Method

Vibration Control WIB Method

Eliminate vibration issues and create a comfortable living environment! Here are some examples of our achievements in vibration control.

Various vibrations from road traffic, railways, factories, and construction work exist around us. These vibrations are often perceived as unpleasant and can negatively impact daily life. The "Vibration Countermeasure WIB Method" addresses these vibration issues and creates a comfortable living environment. Additionally, the installation location and shape can be selected according to each property. 【Summary of Achievements (Partial)】 ■ Vibration Source: Road traffic vibration ■ Installation Location: Directly beneath the vibration source ■ WIB Method Type: Plate-type WIB Method (Honeycomb cell type) ■ Issue: Vibrations from large vehicles passing on the road propagate to nearby residences, leading to vibration complaints ■ Response: Road improvement work was carried out, and a honeycomb cell-type plate WIB Method was installed directly beneath the road *For more details, please refer to the PDF document or feel free to contact us.

  • Ground foundation construction method
  • Ground improvement
  • Ground improvement materials

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Liquefaction countermeasure WIB method

Liquefaction countermeasure WIB method

Reduction of seismic forces and prevention of liquefaction! Constraining the soil inside the cell to suppress ground deformation and reduce seismic motion.

The "Liquefaction Countermeasure WIB Method" protects buildings from damage caused by earthquakes and liquefaction. The basic structure consists of replacement soil that acts as a seismic isolation layer, ground improvement piles that function as a damping layer, and support ground improvement piles that support the building foundation. The ground improvement piles in the damping layer are constructed in a cellular form, creating a strong and stable composite ground (non-liquefaction layer). Additionally, by increasing resistance through the combination of pile foundations and the WIB method, it is possible to reduce the number of piles or lower the grade of the piles, thereby rationalizing the design and contributing to cost reduction. 【Features】 ■ Ground improvement piles in the damping layer are constructed in a cellular form ■ Creates a strong and stable composite ground (non-liquefaction layer) ■ During an earthquake, the cellular ground improvement piles restrain the soil inside the cells ■ Suppresses ground distortion and reduces seismic motion ■ Since liquefaction does not occur inside the cells, it blocks the propagation of liquefied mud water below, preventing surface liquefaction *For more details, please refer to the PDF materials or feel free to contact us.

  • Ground foundation construction method
  • Ground improvement
  • Ground improvement materials

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Different subsidence countermeasures

Different subsidence countermeasures

The safety of the building has improved! Strengthening the ground serves as a foothold for suppressing differential settlement.

Differential settlement refers to the uneven application of the building's load on the ground, causing the building to tilt. When differential settlement occurs, it can lead to various issues in daily life, such as doors and windows not closing properly and health problems. By constructing a WIB structure within the ground, the rigidity of the WIB structure distributes the load into the ground, resulting in a structural form that increases the bearing capacity against the building load beyond the strength of the original ground at ultimate bearing capacity. Since the WIB structure is built with a planar spread, it can be designed to evenly distribute the loads from buildings and other structures. As a result, it can suppress differential settlement of the ground and improve the safety of the building. 【Features】 ■ Strengthening the ground serves as a foothold for suppressing differential settlement. ■ Designed to evenly distribute the loads from buildings and other structures. ■ Can suppress differential settlement of the ground and improve building safety. *For more details, please refer to the PDF materials or feel free to contact us.

  • Ground foundation construction method
  • Ground improvement
  • Ground improvement materials

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[WIB Construction Method Case Study] Vibration Control Measures for Factories with Vibration-Generating Equipment

[WIB Construction Method Case Study] Vibration Control Measures for Factories with Vibration-Generating Equipment

A design that avoids interference with other buried objects! A case of vibration mitigation measures implemented directly under the factory.

At a certain company located in the Kinki region, there were concerns about the impact of vibrations from the internal roads on the new manufacturing plant being established. Since vibration-sensitive equipment is scheduled to operate within the factory, a quiet environment is required. Therefore, the "WIB method" was adopted as a vibration countermeasure, and a design was developed specifically targeting micro-vibrations. After the countermeasures were implemented, the perceived vibrations were reduced to 1/7 to 1/5 of the previous levels. The transmission of vibrations to the manufacturing plant was mitigated, creating an environment where the vibration-sensitive equipment could operate normally. 【Case Summary】 ■ Location: Kinki ■ Client: Certain Company ■ Vibration Source: Vibrations from the internal factory roads ■ Preservation Target: Newly established manufacturing plant ■ Countermeasure Method: Plate-type WIB (honeycomb cell type) ■ Installation Position: Directly beneath the receiving side *For more details, please refer to the PDF document or feel free to contact us.

  • Ground foundation construction method
  • Ground improvement
  • Ground improvement materials

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