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  6. Building 'Tilt Correction' and 'Ground Improvement' directly beneath the building *Comprehensive catalog available now*

Building 'Tilt Correction' and 'Ground Improvement' directly beneath the building *Comprehensive catalog available now*

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last updated:Nov 21, 2025

メインマーク 【全国対応】/東京・大阪・札幌・仙台・新潟・金沢・名古屋・福岡
メインマーク 【全国対応】/東京・大阪・札幌・仙台・新潟・金沢・名古屋・福岡
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The ground directly beneath existing buildings can also be improved! Appropriate methods are selected based on the building structure and ground conditions. Sometimes, two methods are combined to meet diverse needs!

■Selecting and implementing the optimal construction method with reliable technology and extensive experience■ With our extensive knowledge of ground and construction based on rich experience, we interpret the necessary information from surveys to clarify the causes of subsidence. We select appropriate construction methods while considering the situation and carry out the implementation. Sometimes, we adopt hybrid methods that combine different techniques to meet diverse needs. We can propose appropriate modification and reinforcement work for a wide range of structures and ground conditions, including factories, warehouses, stores, and public facilities. We correct the tilt of existing buildings and construct a solid foundation directly beneath them to prevent further subsidence. ★You can view our 'Comprehensive Catalog' introducing the construction methods we handle by downloading the PDF. 【Listed Construction Methods】 ■High-pressure injection mixing method ■Underpinning method ■Side pinning method (helical pier method) ■GSIS method ■JOG method ■TerraTech method Please feel free to contact us. Toll-free number: 0120-873-835

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Building 'Tilt Correction' and 'Ground Improvement' directly beneath the building *Comprehensive catalog available now*

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  • ▼A closer look at ground improvement under the building.
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【Comprehensive Catalog - Contents】 <Settlement Prevention> Ground improvement and support under existing buildings - High-pressure jet grouting method (small diameter type, medium to large diameter type) - Underpinning method - Side pinning method (helical pier method) - GSIS method <Tilting Correction and Void Filling> Settlement correction under concrete floor slabs - JOG method - Terratec method *For more details, please refer to the PDF document or feel free to contact us. Toll-free number: 0120-873-835

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[Ground Improvement] Correction of Building Tilt and Ground Improvement Method Directly Under the Building

[Ground Improvement] Correction of Building Tilt and Ground Improvement Method Directly Under the Building

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[Inclination/Subsidence/Step Difference/Cavity Filling] "TerraTech Method" Correction of subsidence in concrete floor slabs due to ground subsidence or disasters.

[Inclination/Subsidence/Step Difference/Cavity Filling] "TerraTech Method" Correction of subsidence in concrete floor slabs due to ground subsidence or disasters.

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Settlement Correction / Void Filling: Construction Case Studies - TerraTech Method

Settlement Correction / Void Filling: Construction Case Studies - TerraTech Method

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Construction Modification Work: Case Study Collection of Teratec Method

Construction Modification Work: Case Study Collection of Teratec Method

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This is the first time for Mainmark to exhibit.

Announcement of Participation in "Western Japan Manufacturing Technology Innovation 2025" to be Held in Kokura, Fukuoka in July 2025.

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The exhibition "Nihon Manufacturing Technology Innovation 2025," which will be held from July 2 (Wednesday) to July 4 (Friday), 2025, at the West Japan General Exhibition Center, has been confirmed! At "Nihon Manufacturing Technology Innovation 2025," cutting-edge technologies that address various challenges faced by manufacturing sites in the Kyushu and Yamaguchi regions, centered around Kitakyushu, will be showcased. Mainmark will be exhibiting for the first time, introducing the "TerraTech Method," which contributes to safety measures by filling the voids under floors where machinery and equipment are installed, and improving productivity and preventing workplace accidents by correcting floor inclinations. We look forward to welcoming everyone visiting the Ipros manufacturing site. *For more details, please see the announcement below: https://mainmark.co.jp/news/20250522

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This is the first time for Mainmark to exhibit.

Announcement of participation in "MF-TOKYO 2025" to be held in Tokyo in July 2025.

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The exhibition at "MF-TOKYO 2025," which will be held from July 16 (Wednesday) to July 19 (Saturday), 2025, at Tokyo Big Sight, has been confirmed! "MF-TOKYO 2025" is an international exhibition related to forming machinery (presses, sheet metal, forming, automation, and peripheral equipment). Mainmark will be exhibiting for the first time, showcasing safety measures such as floor void filling for heavy machinery and equipment like presses, as well as the "TerraTech Method," which contributes to productivity improvement and prevention of labor accidents by correcting factory floor inclinations. We look forward to welcoming everyone visiting the Ipros manufacturing site. *For more details, please see the announcement below: https://mainmark.co.jp/news/20250529

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This is the first time that the main mark is exhibiting alone.

Announcement of participation in "FOOMA JAPAN 2025" to be held in Tokyo in June 2025.

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The exhibition at "FOOMA JAPAN 2025," to be held from June 10 (Tuesday) to June 13 (Friday), 2025, at Tokyo Big Sight, has been confirmed! "FOOMA JAPAN 2025" is one of the largest exhibitions in Japan's food industry, aimed at exchanging technologies and information related to food machinery, equipment, and related devices. Mainmark will be exhibiting for the first time independently, showcasing the "TerraTech Method," which contributes to pest control through void filling under floors and improves productivity and prevents workplace accidents by correcting the slope of factory floors! ■ Main topics to be introduced: - Investigation of voids under floors, level surveys of floors, vibration surveys - Void filling method "TerraTech Method" for correcting floor subsidence without stopping operations - Construction to level tilted buildings - Ground improvement work beneath buildings We look forward to welcoming everyone visiting the Ipros manufacturing site. *For more details, please see the announcement below: https://mainmark.co.jp/news/20250418

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We have extensive repair experience in environments where it is difficult to stop operations, such as stores and factories.

We have published examples of the construction work for the sinking correction project.

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We have newly published a case study on our service site for the Teratec method. This is a case of settlement correction work carried out at an electronics retail store in Shiga Prefecture. There were concerns about the sagging of the store floor due to ground subsidence, and we were consulted by the company. We understand that our Teratec method was chosen because it allows for construction without interrupting daily operations. Additionally, the positive feedback from a previous project was also a key point. Our company has extensive experience in settlement measures and void filling work while maintaining daily operations for stores and factories. With eight offices nationwide, we are ready to assist you, so please feel free to contact us if you are facing issues with ground subsidence or voids under your floors. ■ Case Study (Teratec Method Service Site): https://teretek.jp/repo/r181

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メインマーク

メインマーク 【全国対応】/東京・大阪・札幌・仙台・新潟・金沢・名古屋・福岡

Building materials, supplies and fixtures

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The main business activities of Mainmark involve "returning tilted floors and buildings to a level state" and "preventing existing floors and buildings from tilting." We primarily offer the "TerraTech Method," which allows us to level tilted floors without stopping operations, and we provide various construction proposals tailored to our customers' concerns, from investigation to execution. ■ Nationwide responsible construction with over 5,000 completed projects Mainmark has established offices in eight locations across the country and conducts responsible construction nationwide. We serve a wide range of clients, including factories, stores, warehouses, offices, and apartments. ■ Non-disruptive floor tilt and subsidence correction method "TerraTech Method" Our main service, the "TerraTech Method," is a patented technique that injects TerraTech resin (rigid polyurethane foam resin) into concrete floors that have developed tilts, subsidence, steps, or voids due to ground subsidence or earthquakes. The expansion force of the resin levels the sunken floor and fills the voids beneath it. This technology is also registered with the Ministry of Land, Infrastructure, Transport and Tourism's "NETIS," ensuring its reliability. Patent No. 4896949 "Method for Correcting Sunken Floors" NETIS Registration No. "QS-080007"

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