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TNF Method for shortening construction periods and reducing costs

TNF Method for shortening construction periods and reducing costs

New technology for shortening construction periods and reducing building costs! An explanation of the TNF method that overturns the conventional wisdom of traditional foundation construction methods!

This document provides a detailed introduction to the new technology "TNF Method" for shortening construction periods and reducing building costs. This method achieves a low-cost foundation that does not require piles. Typically, there are no underground beams, and the foundation and slab concrete are directly poured onto the improved layer shaped like a grid. We provide a detailed explanation of the "construction sequence," "cost comparison by construction type," and "construction achievements," along with diagrams and photos. We encourage you to read it. 【Contents】 ■ Why is foundation work necessary in construction? ■ What is the current situation regarding this? ■ What are the current issues? ■ Proposals for new construction and extensions ■ What is the TNF Method? *For more details, please refer to the PDF document or feel free to contact us.

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Seismic retrofitting measures: Maintenance-free and reliable manhole VD method.

Seismic retrofitting measures: Maintenance-free and reliable manhole VD method.

Through non-excavation, we will implement seismic reinforcement measures for existing manholes.

This method suppresses the uplift of manholes through two functions: ground improvement by vibration and the drainage function for excess pore water pressure relief. It allows for drilling from inside the manhole to the bottom of the manhole without drawing in groundwater or soil, enabling the installation of a filter. By vibrating the manhole body and compacting the surrounding ground, ground improvement is achieved, and even if excess pore water pressure occurs due to aftershocks, it is maintenance-free, providing peace of mind. [Features] - No excavation - Maintenance-free - Resistant to aftershocks *For more details, please refer to the PDF document or feel free to contact us.

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T-BAGS vibration reduction method

T-BAGS vibration reduction method

Absorbing building vibrations through the sliding of T-BAGS! Seismic isolation foundation structure and seismic isolation construction method using it.

The "T-BAGS Seismic Isolation Method" involves laying two layers of T-BAGS, sandwiched with a special sheet, beneath the floor slab and under the foundation. During an earthquake, the sliding of the T-BAGS absorbs the building's vibrations. Due to its extremely high durability, regular maintenance is not required. Additionally, by combining it with the TNF method, it can be applied in soft ground conditions and reduce installation costs. 【Features】 ■ Two layers of T-BAGS sandwiched with a special sheet laid beneath the floor slab and under the foundation ■ Applicable to soft ground ■ Low cost ■ Maintenance-free ■ Vibration reduction: from 300gal–800gal to below 200gal–250gal *For more details, please refer to the PDF materials or feel free to contact us.

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  • Anti-vibration, earthquake-proof, vibration-isolating devices

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TNF Hybrid Method

TNF Hybrid Method

Contributing to CO2 reduction through carbon storage effects of wood use! Introducing liquefaction countermeasure methods.

We would like to introduce our "TNF Hybrid Method." After ground improvement using the "TNF Method," we drive log piles from the improved layer. This compacts the loose sandy ground that causes liquefaction, improves the ground, and provides stable support for buildings. Additionally, the use of log piles (wood) contributes to carbon storage, helping to reduce CO2 emissions. 【Features】 ■ Low-cost liquefaction countermeasures ■ CO2 emission reduction ■ Compacts loose sandy ground and improves the foundation ■ Provides stable support for buildings *For more details, please refer to the PDF document or feel free to contact us.

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TNF+ Method

TNF+ Method

A new construction method applicable to mid-rise and high-rise buildings! Utilization of geothermal energy such as heat pumps is possible.

The "TNF+ (Plus) Method" enhances the "TNF Method (a shallow improvement method with a grid-like structure)" by applying columnar improvements to the bottom layer, making the ground even stronger and protecting buildings from weak ground. The improved layer can be formed into various shapes, allowing for the free installation of underground structures. At the time of land return, a pipe water jet is injected, instantly crushing the improved body through water pressure. 【Features】 ■ The columnar improvement section encloses the soil in the lower part of the improved layer, achieving a solid foundation. ■ A new method applicable to mid-rise and high-rise buildings. ■ The improved layer can be formed into various shapes, allowing for the free installation of underground structures. ■ By installing pipes in the columnar section, geothermal utilization such as heat pumps is possible. ■ High-pressure water is injected from the pipes installed in the columnar section to crush the improved body. ■ The improved body can be dismantled in a short period, reducing the cost of restoring the land to its original state. *For more details, please refer to the PDF document or feel free to contact us.

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WT method

WT method

Application to the installation of various facilities! Easy construction even on soft ground or ground with high groundwater levels.

The "WT Method" is a construction technique that improves underground areas such as parking lots using the TNF method, creating a reservoir consisting of walls on four sides and a bottom slab. By forming the contact surface between the bottom slab and the underlying ground in a grid pattern, it maintains the stability of the structure even on soft ground. Additionally, since the improved ground serves as a container, construction work such as rebar and ready-mixed concrete is almost unnecessary. It allows for a shorter construction period compared to typical retention facilities. 【Features】 ■ Easy to construct even on soft ground or ground with high groundwater levels ■ Minimal construction work required as the improved ground acts as a container ■ Shorter construction period compared to conventional retention facilities ■ Can be freely shaped, allowing for the installation of oil tanks and piping systems *For more details, please refer to the PDF materials or feel free to contact us.

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WT method + TNF method

WT method + TNF method

Integrating the ground behavior of gas stations on weak ground! Protecting buried facilities from earthquakes and other hazards.

We introduce a suitable construction method for the burial of tanks and piping at gas stations. By applying the "WT method," we form a container to house buried facilities such as tanks using improved ground. By combining it with the "TNF method," we integrate the ground behavior of gas stations on soft ground, protecting buried facilities from earthquakes and ground subsidence. Additionally, it eliminates the need for sheet piles and bracing, achieving a reduction in construction time and costs. 【Features】 ■ Suitable for soft ground - No uplift due to the absence of piles, preventing damage to piping - Applying the TNF method under buildings and in external structures prevents damage to underground facilities ■ Achieves low cost and reduced construction time - Eliminates the need for sheet piles and bracing, achieving a reduction in construction time and costs *For more details, please refer to the PDF document or feel free to contact us.

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TNF method

TNF method

Over 1,300 achievements nationwide! No need for pile driving, formwork, or foundation work.

At Yoshimitsu Corporation, we carry out ground improvement to create artificial bedrock suitable for buildings on weak ground across the country. Compared to pile foundations, we achieve approximately 30% cost reduction. Since pile work, formwork work, and ground preparation work are not required, the construction period is shortened by 50%. Please feel free to contact us when you need our services. 【Features】 ■ Approximately 30% cost reduction compared to conventional methods (pile foundation) (for a total floor area of 1000 m² and pile length of 30 m) ■ Construction period shortened by 50% compared to conventional methods, as pile work, formwork work, and ground preparation work are not required (for a total floor area of 1000 m² and pile length of 30 m) ■ No piles are used, which also reduces demolition costs when dismantling the building *For more details, please refer to the related links or feel free to contact us.

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Features of the TNF method (2)

Features of the TNF method (2)

Introducing the features of our TNF method, which can shorten construction time by 50% compared to conventional methods!

We would like to introduce the features of the "TNF Method" implemented by Yoshimitsu Corporation, which has over 1,300 achievements nationwide. In soft ground across the country, we carry out ground improvement to create an artificial bedrock suitable for the building. Compared to conventional methods, there is no need for pile work, formwork, or foundation work, allowing for a 50% reduction in construction time (for a total floor area of 1,000 m² and pile length of 30 m). Please feel free to contact us when you need our services. 【Features】 ■ Approximately 30% cost reduction compared to conventional methods (pile foundation) (for a total floor area of 1,000 m² and pile length of 30 m) ■ No piles are used, which also reduces demolition costs when dismantling the building *For more details, please refer to the related links or feel free to contact us.

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Shortening construction periods and reducing costs: TNF method

Shortening construction periods and reducing costs: TNF method

"Shallow improvement" that supports the entire ground surface of the building without using piles.

The "TNF Method" is a low-cost special foundation construction method that integrates the slab and building foundation with improved ground using solidifying materials, supporting the building across the entire improved ground surface without the use of piles. By dispersing soil stress in multiple directions, it suppresses one-directional soil extrusion. Construction is possible while protecting historical heritage and other underground features. Additionally, it significantly reduces the use of rebar, concrete, and formwork. 【Features】 ■ Suppresses differential settlement ■ No uplift steps that occur in pile-supported buildings ■ The improved ground shields against surface outflow of soil and mitigates liquefaction directly beneath the building ■ Minimal impact on underground natural environments such as groundwater ■ Protects underground buried objects ■ Reduces CO2 emissions *For more details, please refer to the PDF materials or feel free to contact us.

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TNF-D Method

TNF-D Method

Contributing to the overall shortening of the construction period! Compared to typical foundation shapes, the ground pressure under improved ground conditions is reduced.

The "TNF-D Method" disperses the stress under the foundation by shaping the foundation into a trapezoidal form. It reduces stress on the lower ground and supports the foundation with a solid TNF improved ground. By minimizing the volume of the foundation, it can decrease the amount of concrete, excavation, and rebar used. Additionally, it contributes to reducing environmental impact through labor-saving construction. 【Features】 ■ Reduction in foundation structure costs ■ Shortening of foundation structure construction period ■ Resolution of labor shortages ■ Reduction of environmental impact *For more details, please refer to the PDF materials or feel free to contact us.

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Features of the TNF Method (1)

Features of the TNF Method (1)

Introducing the features of our TNF method, which has reduced costs by about 30% compared to traditional pile foundations!

We would like to introduce the features of the "TNF Method," implemented by Yoshimitsu Corporation, which has over 1,300 achievements nationwide. In soft ground across the country, we carry out ground improvement to create an artificial bedrock suitable for the building. Compared to conventional methods (pile foundations), we can achieve approximately 30% cost reduction (for a total floor area of 1,000 m² and pile length of 30 m). Please feel free to contact us when you need our services. 【Features】 - Compared to conventional methods, there is no need for pile work, formwork work, or ground preparation work, resulting in a 50% reduction in construction time (for a total floor area of 1,000 m² and pile length of 30 m). - Since no piles are used, the demolition costs during building dismantling are also reduced. *For more details, please refer to the related links or feel free to contact us.

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Features of the TNF Method (3)

Features of the TNF Method (3)

No use of piles! Introducing the features of the TNF method, which can also reduce demolition costs during building demolition!

We would like to introduce the features of the "TNF Method," implemented by Yoshimitsu Corporation, which has over 1,300 successful projects nationwide. We carry out ground improvement to create an artificial bedrock suitable for buildings on soft ground across the country. Since we do not use piles, the demolition costs during building dismantling are also reduced. Please feel free to contact us when you need our services. 【Features】 ■ Approximately 30% cost reduction compared to conventional methods (pile foundation) (for a total floor area of 1,000 m² and pile length of 30 m) ■ Construction period shortened by 50% compared to conventional methods, as pile work, formwork work, and ground preparation work are not required (for a total floor area of 1,000 m² and pile length of 30 m) *For more details, please refer to the related links or feel free to contact us.

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