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【Customer Consultation and Issues】 A gap of up to 40mm has developed in the concrete pavement slabs within the highway tunnel, resulting in a height difference of up to 64mm due to fluttering. Patching materials were used to address the height differences, but to eliminate the discrepancies in the concrete pavement slabs, we adopted Upcon's concrete slab settlement correction method. This method allows for height correction within a short construction period without breaking the existing concrete pavement slabs. The gaps are filled with polyurethane resin, which expands on its own to fill the voids completely. The polyurethane resin injected beneath the concrete slabs flows into the crushed stone layer of the subbase, resolving any looseness in the surface layer and using the pressure from its foaming and expansion to lift the concrete pavement slabs and eliminate the height differences. 【Site Information】 Hiroshima Prefecture Total Construction Area: 653 square meters Construction Period: 10 nights

• Road construction

■The cargo in the warehouse is not stacked straight. ■There are level differences that hinder the movement of forklifts. ■The equipment, such as racks, is tilted. ■Abnormal operation is observed in the automatic racks. ■The transport robot has stopped. ■The machine cannot be leveled. Issues caused by floor tilting, level differences, and sagging due to earthquakes or ground subsidence, as well as voids under the floor, can be resolved using a patented unique method called the "Upcon Method," which utilizes polyurethane resin and can correct these problems in as little as one day. 【What is the Upcon Method?】 Polyurethane resin is injected into existing concrete floors that have subsided, and through the pressure of rapid foaming, the ground is compacted and strengthened while pushing up and correcting the concrete floor. Since the correction is done without demolishing the existing concrete floor, it significantly reduces the construction period. The polyurethane can lift the floor with a foaming pressure of up to 10t/m², eliminating the need to move heavy equipment or products. Therefore, corrections can be made without stopping the operations of factories or warehouses. ▼We will be exhibiting at the 【International Logistics Comprehensive Exhibition 2024】. Date: September 10 (Tuesday) to 13 (Friday), 2024 Venue: Tokyo Big Sight, East Exhibition Hall Booth Number: 7-808

• Foundation construction

Natural disasters such as earthquakes and typhoons have caused utility poles to fall, obstructing emergency vehicles and delaying recovery efforts, which has become a social issue. In recent years, accidents have also occurred where strong winds have caused utility poles to fall, leading to traffic disruptions and damage to buildings and homes. Upcon has developed a concrete pole reinforcement method called "Sturdy Pole," which increases the destructive load capacity of existing concrete poles to prevent collapse. The "Sturdy Pole" method involves injecting high-strength foam polyurethane resin, specifically developed for reinforcement, into the hollow section of existing concrete poles, achieving a short construction period and ease of installation. This method increases the strength of existing concrete poles without the need for replacement. Since there is no need for removal, it helps reduce construction time and costs while also contributing to the resilience of the national infrastructure. 【Features】 1. Short construction period Special polyurethane resin is injected, quickly filling the cavity with foaming and expansion pressure. 2. Easy installation Only drilling and injection into the existing concrete poles are required, allowing for installation by a small team. 3. Suitable for narrow spaces Reinforcement in narrow areas or along major roads where replacing existing concrete poles is difficult can be easily accomplished. ■ More details can also be viewed in the PDF data.

• Reinforcement and repair materials

We would like to introduce a case of "void (cavity) filling work" carried out at a power company substation in Hokkaido. During the renovation work of the building, voids were observed under the concrete floor, leading to a request for void (cavity) filling as a preventive measure against potential issues before installing heavy machinery. The urethane resin injection work was carried out while confirming the height with a laser level, and it was confirmed that the urethane resin was densely filled, completing the construction. 【Case Overview】 ■ Construction Area: 57m² ■ Maximum Void Volume: 100mm ■ Area: Hokkaido / Power Company Substation ■ Construction Period: 1 day *For more details about the case, you can view them through the related links. For more information, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods

Here is a case study of "floor sinking correction work" carried out at a nursing care facility in Shizuoka Prefecture. Due to weak ground, subsidence occurred, resulting in visible sinking of the floor within the facility. During a preliminary survey, a maximum subsidence of 60mm was observed at the center of the slab, and a gap of 50mm was confirmed near the beams. Using the foam pressure of polyurethane resin, the ground was compacted and strengthened, filling the gaps between the slab and the ground, while simultaneously correcting the floor sinking. [Case Overview] ■ Construction Area: Approximately 60m2 ■ Location: Nursing care facility in Shizuoka Prefecture ■ Construction Period: 1 day *For more detailed information about the case, please refer to the related links. For further details, please check the PDF materials or feel free to contact us.

• Renovation and repair methods

We would like to introduce a case of "subfloor void filling work" carried out at a nursing facility located in Shizuoka Prefecture. Due to weak ground, ground subsidence was occurring, causing the ground to sink while voids were observed under various areas of the building's floor. We conducted filling work using polyurethane resin to fill the voids beneath the floor slab, successfully eliminating the voids. 【Case Summary】 ■ Construction Area: Approximately 250m2 ■ Location: Nursing facility in Shizuoka Prefecture ■ Construction Period: 3 days *For more detailed information about this case, please refer to the related links. For further details, please check the PDF materials or feel free to contact us.

• Renovation and repair methods

Here is an example of "subsidance correction" carried out at an elementary school in Miyagi Prefecture. Due to floor subsidence, gaps appeared between the classroom walls and ceiling, causing the classroom door to tilt and hindering the opening and closing of the lock. The overall floor level of the classroom and hallway was corrected from a maximum subsidence of 69mm to within -18mm, and the gaps that had formed between the walls and ceiling before the work were also improved. 【Case Overview】 ■ Construction Area: 331m2 ■ Maximum Subsidence: 69mm ■ Area: Tagajo City, Miyagi Prefecture / Elementary School ■ Construction Period: 4 days *For more detailed information about the case, please refer to the related link. For more details, please check the PDF materials or feel free to contact us.

• Renovation and repair methods

We would like to introduce a case where we performed "floor sinking correction work" and "underfloor void filling work." The construction site was an elementary school located in Gifu Prefecture. Due to consolidation settlement, the floors of classrooms and the art room in the elementary school sank, and voids (cavities) were also observed under the floor. The area of the sinking correction was approximately 83m², with a maximum sinking amount of 64mm. Additionally, the maximum void amount was 40mm, and the construction period was 2 days. 【Case Summary】 ■ Area of sinking correction: Approximately 83m² ■ Maximum sinking amount: 64mm ■ Area of void filling: Approximately 165m² ■ Maximum void amount: 40mm ■ Area: Elementary school in Gifu Prefecture ■ Construction period: 2 days *For more detailed information about the case, please refer to the related links. For further details, please check the PDF materials or feel free to contact us.

• Renovation and repair methods

We would like to introduce a case of "floor sinking correction work" that we conducted. Due to the Kumamoto earthquake, the gymnasium of a junior high school in Kumamoto Prefecture sank. Since it could be corrected in a short time, we received a request for construction. The area of sinking correction was approximately 897m2. The maximum sinking amount was 53mm, and the planned correction value was within -10mm. The construction period was 7 days. 【Case Overview】 ■ Area of sinking correction: Approximately 897m2 ■ Maximum sinking amount: 53mm ■ Planned correction value: Within -10mm ■ Area: Junior high school gymnasium, Kikuchi-gun, Kumamoto Prefecture ■ Construction period: 7 days *For more details about the case, please refer to the related links. For more information, please check the PDF materials or feel free to contact us.

• Renovation and repair methods

We would like to introduce a case of "void filling work" that we conducted. The construction site is the first-floor hall of a student dormitory at a police academy in Miyagi Prefecture. Due to the impact of the Great East Japan Earthquake, voids developed beneath the hall, necessitating filling work. The construction area was approximately 45m², with a maximum void depth of 180mm. We injected polyurethane resin and conducted a confirmation of the resin filling using a CCD camera after the work was completed. 【Case Overview】 ■ Construction Area: Approximately 45m² ■ Maximum Void Depth: 180mm ■ Area: Police Academy Student Dormitory in Miyagi Prefecture ■ Construction Period: 1 day (August 2013) ■ Client: Ministry of Land, Infrastructure, Transport and Tourism, Tohoku Regional Development Bureau, Maintenance Division *For more details about the case, please refer to the related links. For further information, please check the PDF materials or feel free to contact us.

• Renovation and repair methods

Here is an example of "subfloor void filling work + subfloor settlement correction work" carried out at an elementary school in Miyagi Prefecture. Due to the impact of the Great East Japan Earthquake, settlement occurred in various areas of the school, including classrooms, the health room, the principal's office, and the gymnasium. The construction area was approximately 530m2, with a maximum settlement of 71mm and a maximum void size of 250mm. 【Case Overview】 ■ Construction Area: Approximately 530m2 ■ Maximum Settlement: 71mm ■ Maximum Void Size: 250mm ■ Area: Aijima Elementary School in Natori City, Miyagi Prefecture ■ Construction Period: August 2013 *For more details about the case, please refer to the related links. For further information, please check the PDF materials or feel free to contact us.

• Renovation and repair methods

We would like to introduce a case where we performed "subsidence correction work" in an elementary school classroom in Miyagi Prefecture. In this classroom, floor sagging occurred due to ground subsidence, raising concerns about the safety and health of the children. We raised the floor using the foaming pressure of polyurethane resin, correcting the maximum subsidence from -112mm to the planned value of -22mm. 【Case Overview】 ■ Construction Area: 1406m2 ■ Maximum Subsidence: 112mm ■ Construction Period: 6 days ■ Area: Miyagi Prefecture *For more detailed information about the case, please refer to the related links. For further details, please check the PDF materials or feel free to contact us.

• Renovation and repair methods

We would like to introduce a case of "settlement correction and void filling work" carried out on the gymnasium floor of a junior high school in Fukushima Prefecture. Due to the impact of an earthquake, the floor had significantly sunk in a bowl shape from the outer edges towards the center, causing issues with the use of the gymnasium. The area that had sunk by a maximum of 108mm was corrected to within the planned value of -15mm, and it was confirmed using a CCD camera that the polyurethane resin was filled without any gaps, completing the work. 【Case Overview】 ■ Construction Area: 1,036m2 ■ Construction Period: 8 days ■ Maximum Settlement: 108mm ■ Area: Fukushima Prefecture *For more details about the case, please refer to the related links. For further information, please check the PDF materials or feel free to contact us.

• Renovation and repair methods

We would like to introduce a video of the correction of the sinking floor in the gymnasium of an elementary school located in Miyagi Prefecture. The floor of the elementary school gymnasium has significantly sunk due to earthquakes and ground subsidence. This video explains the construction process of the Upcon method used in the gymnasium. The construction area is 665m2, and the construction period is 6 days. Please take a look. 【Site Information】 ■ Construction Area: 665m2 ■ Construction Period: 6 days ■ Maximum Sinking Amount: 133 ■ Maximum Void Amount: 90mm ■ Area: Miyagi Prefecture *For more details, please refer to the related links. For further information, please check the PDF materials or feel free to contact us.

• Renovation and repair methods

We would like to introduce a case of "sunken floor correction work and deflection correction work" conducted in an elementary school classroom in Tokyo. Due to ground subsidence, a maximum of 80mm of sinking occurred in the center of the floor, causing deflection. Concerns for safety and health rendered the classroom unusable. The areas of the classroom floor that had sunk were corrected to -10mm, moving from the outer edges toward the center. The deflection of the classroom floor was resolved, and the work was completed. 【Case Overview】 ■ Construction Area: 63m2 ■ Maximum Subsidence: 80mm ■ Construction Period: 1 day ■ Area: Tokyo *For more detailed information about the case, please refer to the related links. For more details, please check the PDF materials or feel free to contact us.

• Renovation and repair methods

We would like to introduce a case of "settlement correction work" carried out on the RTG running surface at a port facility in Akita Prefecture. Over time, the RTG running surface has settled, causing a step difference on the adjacent vehicle running path. Additionally, unevenness has occurred in the longitudinal direction, which has affected the operation of the RTG and snow removal work. Compared to other methods, the up-con method was adopted because it allows for construction without breaking the RTG running surface and without stopping operations for a short construction period. 【Case Overview】 ■ Construction Area: 258m² ■ Maximum Correction Amount: 57mm ■ Construction Period: 6 days (nighttime) ■ Area: Akita City, Akita Prefecture / Container Terminal *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Harbor Construction
• Ground foundation construction method

We would like to introduce a case of "maintenance and repair work (void filling and level correction)" conducted at Sendai Airport in Miyagi Prefecture. Due to the earthquake, a level difference occurred in part of the apron (parking area) at Sendai Airport. Subsequent investigations revealed that there were voids between the apron and the subgrade. To restore the functionality of Sendai Airport as soon as possible, our construction method was experimentally adopted as a way to repair the level differences and voids in the apron without removing it. 【Case Overview】 ■ Area: Maintenance and repair work at Sendai Airport ■ Test construction: Conducted in 2011 *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Airport facilities
• Ground foundation construction method

We would like to introduce a case where we conducted "maintenance and management construction" on Runway D at Tokyo International Airport in Tokyo during the fiscal year 2012. The construction period was 4 days. The construction procedure involved entering the construction plant vehicle after confirming the runway entry permission from the control tower. We carried out resin injection work while managing the levels. 【Case Overview】 ■ Area: Maintenance and management construction on Runway D at Tokyo International Airport ■ Construction Period: 4 days (December 2013) ■ Client: Kanto Regional Development Bureau, Tokyo Airport Development Office ■ General Contractor: Haneda Expansion Runway D Maintenance Management Construction Joint Venture *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Airport facilities
• Ground foundation construction method

We would like to introduce a case of "pavement repair work" conducted at the Taniwahara Management Office located on the Joban Expressway in Ibaraki Prefecture. A step was created at the joint between the AS pavement and CO pavement in the toll booth entrance, causing difficulties for vehicle passage. Our company carried out the repair work. At Taniwahara IC, we performed subsidence correction while checking the level. 【Case Overview】 ■ Area: Pavement repair work at Taniwahara Management Office, Joban Expressway ■ Duration: 2 days (May 2012) ■ Client: East Nippon Expressway Company Limited ■ General Contractor: Joban Kogyo Co., Ltd. *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Road construction
• Ground foundation construction method

We would like to introduce a case of "CO pavement slab step depression correction work" conducted at the Kawaguchiko IC L5 lane of the Chuo Expressway Fujiyoshida Line in Yamanashi Prefecture. The construction period was one day. We carried out the step correction of the CO pavement slabs within the toll booth. After traffic regulation, we positioned the construction plant vehicle inside the toll booth for the work. Please feel free to contact us if you have any inquiries. 【Case Overview】 ■ Area: Chuo Expressway Fujiyoshida Line Maintenance Work Kawaguchiko IC L5 Lane ■ Construction Period: 1 day (April 2011) ■ Client: Central Nippon Expressway Company Limited ■ Main Contractor: Central Nippon Highway Maintenance Company Limited *For more details, please refer to the PDF materials or feel free to contact us.

• Renovation and repair methods
• Road construction
• Ground foundation construction method

We would like to introduce a construction case we carried out for East Japan Expressway Company Limited. We performed "Concrete Pavement Slab Settlement Repair Work" at the Urawa Toll Booth on the Tohoku Expressway in Saitama Prefecture. We corrected the settlement of the tread area within the toll booth. 【Case Overview】 ■ Area: Urawa Toll Booth, Tohoku Expressway, Saitama Prefecture ■ Duration: 1 day (December 2012) ■ Client: East Japan Expressway Company Limited ■ General Contractor: NEXCO Maintenance Kanto Co., Ltd. *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Road construction
• Ground foundation construction method

We would like to introduce a case of "Mito District Pavement Disaster Recovery Work" conducted at the Hitachinaka IC of the North Kanto Expressway in Ibaraki Prefecture. The toll booth has a total of 8 lanes. The three lanes closest to the embankment showed significant subsidence, and traffic regulations were implemented one lane at a time, focusing on those lanes to carry out subsidence corrections. Additionally, partial subsidence corrections were also performed on other lanes where there were noticeable differences in height with the U-shaped drainage ditches. 【Case Overview】 ■ Construction Area: Approximately 1,446 m2 ■ Area: Toll booth at Hitachinaka IC of the North Kanto Expressway ■ Construction Period: 17 days (December 2012) ■ Client: East Nippon Expressway Company Limited ■ General Contractor: Jizaki Road Co., Ltd. *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Road construction
• Ground foundation construction method

We would like to introduce a case of "Disaster Recovery Concrete Pavement Slab Settlement Correction Work" conducted on the Route 4 Bypass in Koriyama, Fukushima Prefecture. This is the restoration work for the CO pavement slabs of the Route 4 Koriyama Bypass, which were damaged and settled due to the Great East Japan Earthquake. While limiting traffic restrictions during construction to lane reduction only, our method was adopted to raise the still sound CO pavement slabs using the foaming pressure of rigid polyurethane resin without replacement. 【Case Overview】 ■ Construction Area: Approximately 2,430 m2 ■ Area: Route 4 Bypass in Koriyama ■ Construction Period: 24 days (March 2013) ■ Client: Tohoku Regional Development Bureau, Koriyama Route Office *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Road construction
• Ground foundation construction method

We would like to introduce a case of "leveling repair work" conducted on the concrete pavement slab at a toll booth on the expressway in Ehime Prefecture. Due to ground subsidence, a height difference occurred in the concrete pavement slab at the expressway toll booth, affecting the passage of vehicles. We injected polyurethane resin under the subsided concrete pavement slab and quickly corrected a 30mm height difference. 【Case Summary】 ■ Construction Area: 12m² ■ Construction Period: 1 day ■ Maximum Height Difference: 30mm *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Road construction
• Ground foundation construction method

We would like to introduce a case of "preservation work and disaster recovery work" and "void filling work" conducted at the Higo Tunnel in Yamae Village, Kumamoto Prefecture. In early July 2020, record heavy rainfall in the Kumamoto Prefecture area caused large-scale river flooding and water damage, particularly along the Kumagawa River. We received a construction request from Nishi-Nihon Expressway Maintenance Kyushu Co., Ltd., and carried out emergency work to fill voids and cavities under the concrete pavement slabs that had lifted due to water pressure from the rain disaster, within the section of the tunnel that was closed to traffic. 【Case Overview】 ■ Construction Location: Higo Tunnel, Yamae Village, Kumamoto Prefecture ■ Construction Area: 76m² for the passing lane, 76m² for the driving lane ■ Construction Period: 3 days *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Ground foundation construction method
• Road construction

Here is a case study of "settlement repair work" carried out at a certain house with a slab foundation in Kanagawa Prefecture. Due to a maximum settlement of 66mm observed in one corner of the living room, polyurethane resin was injected under the slab foundation to implement the settlement correction. This time, the work was done in a house with very narrow space between neighboring properties, but our company can perform the work without the need for extensive construction, allowing for a short construction period without affecting the neighboring property. 【Case Overview】 ■ Construction Area: 40m² ■ Maximum Settlement Amount: 66mm ■ Area: Certain residence in Kanagawa Prefecture ■ Construction Period: 3 days *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Residential foundations
• Ground foundation construction method

We would like to introduce a case of "settlement repair work" carried out on a slab foundation house located in Hachioji City, Tokyo. Due to a maximum settlement of 95mm observed, polyurethane resin was injected under the slab foundation to implement the settlement correction. If you are troubled by the tilting of your slab foundation house caused by earthquakes, liquefaction, or ground subsidence, please feel free to contact us. 【Case Overview】 ■ Construction Area: Approximately 43m2 ■ Maximum Settlement: 95mm ■ Area: Hachioji City, Tokyo ■ Construction Period: 2 days *For more details, please refer to the PDF materials or feel free to contact us.

• Renovation and repair methods
• Ground foundation construction method
• Special Construction Method

We would like to introduce a case of "settlement repair work" carried out on a certain house with a flat foundation in Gifu Prefecture. There was a request to perform settlement repair before the exterior wall work, and we were contacted by the client. We injected resin under the flat foundation to carry out the settlement repair, completing the work in two days. 【Case Overview】 ■ Construction Area: Approximately 36m2 ■ Maximum Settlement Amount: 48mm ■ Area: Gifu Prefecture ■ Construction Period: 2 days *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Residential foundations
• Ground foundation construction method

We would like to introduce a case of "floor sinking correction work" and "underfloor void filling work" carried out in a condominium located in Higashi Ward, Kumamoto City, Kumamoto Prefecture. Due to the impact of the Kumamoto earthquake, the floor of the first floor of the condominium sank, creating gaps between the floor and walls, as well as between the walls and ceiling. By adopting the Upcon method, which allows for corrections without the need to move, the gaps that had formed between the floor, ceiling, and walls due to sinking were improved. 【Case Overview】 ■ Construction Area: 1200m2 ■ Maximum Sinking Amount: 61mm ■ Area: Kumamoto City, Kumamoto Prefecture ■ Construction Period: 15 days *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Ground foundation construction method
• Special Construction Method

We would like to introduce a case of "settlement correction work" carried out on a slab foundation house located in Kawasaki City, Kanagawa Prefecture. The homeowner, who purchased the property as a newly built house, was deprived of a comfortable living environment due to the tilting of the house caused by ground subsidence. Several methods for settlement correction were considered, but the homeowner chose to request the work from our company, which could quickly make the corrections without requiring a move. 【Case Overview】 ■ Maximum settlement amount: 107mm ■ Area: Kawasaki City, Kanagawa Prefecture ■ Construction period: 4 days *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Residential foundations
• Ground foundation construction method

We would like to introduce a case of "void filling work" conducted on a slab foundation house located in Tokyo. Due to ground subsidence, the ground level has lowered, resulting in the formation of voids beneath the slab foundation of the house. The voids were resolved in a single day of construction. 【Case Overview】 ■ Maximum void: Approximately 200mm ■ Area: Tokyo ■ Construction period: 1 day *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Ground foundation construction method
• Special Construction Method

We would like to introduce a case of "settlement repair work" carried out on a shallow foundation house located in Urayasu City, Chiba Prefecture. The house sank due to the impact of the Great East Japan Earthquake. The maximum settlement of approximately 60mm was corrected in 1.5 days. Additionally, due to many requests from customers who wanted to visit our construction site, we held an open house at this site with the kind cooperation of our customers. Many people were able to visit the site. 【Case Overview】 ■ Maximum Settlement: Approximately 60mm ■ Area: Urayasu City, Chiba Prefecture ■ Construction Period: 1.5 days *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Residential foundations
• Ground foundation construction method

We would like to introduce a case of "settlement correction work" performed on a slab foundation house located in Urayasu City, Chiba Prefecture. The slab foundation house experienced settlement due to liquefaction caused by the Great East Japan Earthquake. Living in a tilted house led to health issues such as poor physical condition. We corrected a maximum settlement of approximately 80mm over two days. 【Case Overview】 ■ Maximum Settlement: 80mm ■ Area: Urayasu City, Chiba Prefecture ■ Construction Period: 2 days *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Residential foundations
• Ground foundation construction method

Here is an example of "settlement correction work" carried out on a flat foundation house located in Ibaraki Prefecture. This house was newly built and experienced a maximum settlement of 500mm due to the Great East Japan Earthquake. Due to the significant tilt, we used a combination of the up-con method and the single-pipe pile driving method for the correction. 【Case Overview】 ■ Maximum Settlement: 500mm ■ Area: Ibaraki Prefecture ■ Construction Period: 10 days *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Residential foundations
• Ground foundation construction method

Here is an example of "settlement correction work" performed on a slab foundation house located in Kyoto Prefecture. This case involves a house that sank due to ground subsidence, resulting in warped door frames and gaps. The slab foundation house, which experienced a maximum settlement of 46mm, was corrected in 2.5 days. 【Case Overview】 ■ Maximum Settlement: 46mm ■ Area: Kyoto Prefecture ■ Construction Period: 2.5 days *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Residential foundations
• Ground foundation construction method

We would like to introduce a case of "floor sinking correction work" and "filling work for voids and cavities under the floor" conducted in a condominium located in Niigata Prefecture. In the particular RC apartment building (first floor) we are introducing this time, due to the sinking of the floor, there were issues not only with "the tilt of the floor" but also with "gaps occurring between the walls and ceiling" and "doors not closing." After completing the floor sinking correction work and the filling work for voids (cavities) under the floor, the gaps between the walls and ceiling were eliminated, and the misaligned tile joints were leveled. Additionally, the doors that had been unable to close due to the distortion of the frames from the sinking were now able to close properly. 【Case Overview】 ■ Construction Area: 69m2 ■ Maximum Sinking Amount: 36mm ■ Maximum Void Amount: 190mm ■ Area: Niigata Prefecture ■ Construction Period: 1 day *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Ground foundation construction method
• Civil Engineering Method

We would like to introduce a case of "settlement correction work" carried out on a slab foundation house in Unnan City, Tottori Prefecture. Since a maximum settlement of 46mm was observed, resin was injected under the slab foundation to implement the correction. Our company was chosen because the correction could be made without large-scale demolition work or moving. 【Case Overview】 ■ Construction Area: Approximately 106m2 ■ Maximum Settlement Amount: 46mm ■ Area: Unnan City, Tottori Prefecture ■ Construction Period: 2 days *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Ground foundation construction method
• Civil Engineering Method

We would like to introduce a case of "settlement repair work" conducted on a slab foundation house located in Sendai City, Miyagi Prefecture. Due to the impact of an earthquake, there was significant settlement from the bedroom towards the entrance. Cracks and gaps appeared in the columns and stairs of the entrance porch. All points, including a maximum settlement of 73mm, were corrected to within -10mm. 【Case Overview】 ■ Construction Area: Approximately 80m2 ■ Construction Period: 2 days ■ Maximum Settlement Amount: 73mm *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Ground foundation construction method
• Civil Engineering Method

Here is a case study of "floor sinking correction" conducted at a large shopping center in Nara Prefecture. Due to weak ground, the floor had sunk significantly. As a result of the floor sinking, gaps were observed in various places, such as between the floor and walls and between the walls and ceiling. An up-con method that can be corrected during nighttime while the business is closed was adopted, and our company carried out the correction. 【Case Overview】 ■ Construction Area: Approximately 3,240m2 (Backyard 405m2, Store Interior 2,835m2) ■ Maximum Sinking Amount: 94mm ■ Area: Nara Prefecture ■ Construction Period: 25 nights *Supported by 2 construction plant vehicles *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Ground foundation construction method
• Civil Engineering Method

Here is a case study of "settlement correction work" carried out at a large chain store in Akita Prefecture. Due to consolidation settlement, a maximum settlement of 121mm occurred. We addressed this using the Upcon method, which generates almost no noise, dust, or vibration, while paying particular attention to nighttime noise for nearby residents during the construction. The work was carried out over four nights outside of business hours. We injected polyurethane resin into the ground floor and corrected all areas within the construction range, including the maximum settlement of 121mm, to within the planned values (corrections of over 100mm). 【Case Overview】 ■ Construction Area: Approximately 1,160m2 ■ Maximum Settlement: 121mm ■ Area: Akita Prefecture ■ Construction Period: Continuous nighttime work for four days *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Ground foundation construction method
• Civil Engineering Method

Here is an example of "subfloor sinking correction work" carried out at a large pachinko parlor located in Miyagi Prefecture. The large pachinko parlor suffered significant damage due to the Great East Japan Earthquake. Extensive renovation work was conducted to reopen for business as soon as possible. Sinking also occurred in the store's floor, and the Upcon method, which allows for quick corrections, was adopted. Our company implemented the floor sinking correction. We injected urethane resin under the subfloor and corrected all areas within the construction scope, including a section that had sunk by a maximum of 112mm, to within the planned values. 【Case Overview】 ■ Construction Area: Approximately 230m2 ■ Maximum Sinking: 112mm ■ Area: Miyagi Prefecture ■ Construction Period: 1 day (2011) *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Ground foundation construction method
• Civil Engineering Method

Here is an example of "subfloor sinking correction work" carried out at a leisure facility in Ibaraki Prefecture. Correction work was implemented for a significantly sunken floor in the pachinko area within the facility. Sinking was also observed in other areas, including in front of the machine room and in the restrooms, and sinking correction work was conducted over a total construction area of approximately 350m2 over four consecutive nights. 【Case Overview】 ■Construction Area: Approximately 350m2 ■Maximum Sinking Amount: 93mm ■Area: Ibaraki Prefecture ■Construction Period: Four consecutive nights (2011) *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Ground foundation construction method
• Civil Engineering Method

Here is a case study of "subfloor sinking correction work" conducted at a large supermarket in Chiba Prefecture. Due to the impact of the Great East Japan Earthquake, the floor inside the store sank significantly. The Upcon method, which can be corrected during the night while the store is closed, was adopted, and our company carried out the correction. Since the store primarily handles fresh food products, we not only used plastic sheets for protection around the injection gun during construction but also enclosed the injectors to prevent resin dispersion while working. 【Case Overview】 ■ Construction Area: Approximately 2,000 m² ■ Maximum Sinking Amount: 99 mm ■ Area: Chiba Prefecture ■ Construction Period: Continuous 9 nights * To expedite the construction period, two construction plant vehicles were utilized (2011). * For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Ground foundation construction method
• Civil Engineering Method

We would like to introduce a case of "subfloor sinking correction work" carried out at a large supermarket located in Gifu Prefecture. Most of the backroom and store area had sunk, causing gaps between the floor and walls due to the floor sinking, resulting in various issues throughout the store. An Upcon method that can be corrected during nighttime while the store is closed was adopted, and the correction was carried out by our company. 【Case Overview】 ■ Construction Area: Approximately 700m2 ■ Maximum Sinking Amount: 85mm ■ Area: Gifu Prefecture ■ Construction Period: Continuous 5 nights (2013) *For more details, please refer to the PDF materials or feel free to contact us.

• Renovation and repair methods
• Ground foundation construction method
• Civil Engineering Method

We would like to introduce a case of "subfloor sinking correction work" and "subfloor void filling work" carried out at a shopping center in Iwate Prefecture. Due to consolidation settlement, sinking was observed over a wide area of the floor. As a result of the floor sinking, gaps appeared between the floor and walls, causing various issues throughout the store. An Upcon method that could be corrected during nighttime while the store was closed was adopted, and our company carried out the corrections. Additionally, as voids and cavities were also observed under the floor, void filling work using urethane was conducted. [Case Overview] ■ Construction Area: Approximately 540m2 ■ Maximum Settlement Amount: 71mm ■ Maximum Void Amount: 190mm ■ Area: Iwate Prefecture ■ Construction Period: Continuous 7 nights *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Ground foundation construction method
• Civil Engineering Method