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2012.09


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Environmental Friendly

Safety

pile pile

foundationbeam

alluvial layer

diluvium layer

bearing stratum

Not require things like the underground beams for TNF.

The foundation and concrete slab materials are directly placed on the lattice-typed improved

ground layer. As the improved ground layer, the foundation and the slab are constructed in

one body, it can transfer the load of a structure to the ground effectively. In case of building

on soft ground, so far the bearing pile foundation system has been mainly adopted in which

the piles are penetrated down to the firm bearing stratum through the week layer. However,

TNF can realize the low-cost foundation without piles by using the ground surface layer as the

bearing stratum.

The structure of the foundation and the structure of the raft foundation with shallow soil improvementof the building consisting of the improved groundmass and the raft foundation

What kind of foundation is TNF

What kind of foundation is TNF? In short, it is the combination system of the

raft foundation and the ground improvement (shallow soil improvement).The load through the columns (the load of the floors and walls of the second

and higher stories) can be transferred to the bearing ground not only through

the foundation under the columns but also through the slab around the

foundation, by the unifying effect with improved ground, foundation and slab.

In addition, it prevents ground moving laterally at the bottom of the improved

ground layer by the latticetyped because the ground is confined improved

ground layer. The structure becomes stable by this supporting mechanism.

(This is called the confining effect of TNF.) This is one of the good point of

TNF.

foundation(improved ground)

Low-cost

1Little settlementThere is no extra increase in load because the design load at the foundation is almost equal

to that of the ground.

2Control of the differential settlement

As this foundation is lattice-type, underground stresses become uniformly.

The curb type shallow stabilized ground disperses the underground load. and distribution of the

settlement become uniformly by the effect of rigidity of the improved ground.

3No difference in level caused by the arising of piles in case of the structure

with the bearing pile foundation system.

The TNF raft foundation is constructed in one body with the ground, so there is no arising of

piles by the ground settlement. Therefore , there are to equipped pipes under the ground or

the slab.4Prevention of the liquefaction when earthquakes occur

The effect of confining the ground prevents the liquefaction effectively because it controls the

liquidity of soil when earthquakes occur.

1No damage to the underground environment

It is possible to construct without any damage to the

underground natural environment such as underground

water veins.

2No influence on buried property

It is possible to build on ruins without destroying them. It is also

possible to construct on the disposal station of industrial wastes.

Reduction of CO2

It is possible to reduce a large amount of CO2 by using

fewer building materials and shortening the construc-

tion terms, so that the operating time of heavy construc-

tion machine can be decreased.

1Combine of the foundation slab and the improved ground layer

Crushed stone, concrete, reinforcing bars, and molds can be reduced considerably, and low-cost

can be realized by the combine of foundation slab and improved ground layer.

2Improvement of the on-site ground

Since only the shallow ground soil is improved, the amount of soil carried out and in are

decreased considerably because it is not necessary to dispose of excavated soil.

3Reduction of the cost for removal

In case of the structure with pile foundation on a fixed leased land, the cost of removing and

disposing of the piles arises when the land is returned. In TNF system, the cost of destruction

becomes low largely becouse the improved layer can be used effectively as the soil generated

under construction, or put aside.

4Shortening of construction terms

Since the foundation and the slab concrete is directly placed on the improved ground layer,

construction terms can be reduced considerably.

Excavation

Secondimprovement

Nonimprovement

Firstimprovement


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Reliable AccomplishmentsYears of accomplishiments 1993NowConstruction Accomplishments: more than 250 buildings more than 770,000

the soft ground with asilt layer about 19m deepfrom the ground surface.

The condition of the parts constructed by TNF raft foundation system

The condition of the parts constructed by the bearing pilefoundation system

There appears no difference inlevel by the natural settlementbetween the store constructed byTNF and the ground around it.

The piled foundation has arisen (byapproxomately25cm) relatively tothe ground at the septic tankadjoining the store because the

ground has settled down naturally

TNF

the piled foundation

The past external forces byHyogoken Nanbu Earthquake on January 17.1995

Earthquake intensity 4(middle earthquake)Geiyo Earthquake on March 24 .2001 Earthquake intensity 5(strong earthquake)

21,617000yen

36

pile

Pile VS TNF

reinforcing rod construction

As of Sep 2012

0

50

100

150

200

250

H24H23H22H21H20H19H18H17H16H15H14H13H12H11

the number of buildingsproperties

The total of the constructed properties

after the grant of the patent

suitability judgment execution

The total of the constructed properties

0

100000

200000

300000

400000

500000

600000

700000

800000

H24H2322H21H20H19H18H17H16H15H14H13H12H11

the area of construction( )

The total of the construction area

770,000

suitability judgment execution


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TNF System plus middle layer improvement.TNF System is applicable to middle and high rise buildings.

.

Please refrain from the reproduction and duplication of the contents from this brochure without permission.

TNF is one of our registered trade marks.

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