2. On-site Photograph
Weight steel frame foundations investigation
	Most important one by building a house May it is called a unsung hero! It is investigating what foundations it being. Since a weight steel frame is heavy If drilling investigation is conducted and the strength of foundations is not known A house strong against an earthquake is not made.
	Then, what is known by drilling investigation? Drilling investigation 60km weight is dropped and 30cm of steel pipes is stuck, Or [ it dropped weight how many times (the number of times is called N value) ] The strength of foundations is investigated. A left photograph is the report of drilling investigation.
	Then, does N value have how many good times? Generally for sand, 10-15 are common. For a gravel, 15-30 are common. As for clay, 5-8 are common. Therefore, it is good to support a house in the place beyond this. However, watery sand Since it is easy to liquefy at the time of an earthquake, cautions are required. A left photograph is the object sample of the ground of drilling investigation. Exact judgment cannot be performed if there is this [ no ]. Expense is about 1,250 dollars(150,000 yen).
A left drawing is the geology of Nagoya-shi. 1. Deep yellow is the Atsuta layer of a good stratum. 2. Pink is the Ozone layer Komaki gravel layer of a good stratum. 3. Blue is the Toriimatu layer of a good stratum. 4. Orange is Yagoto layer of a good stratum. 5. Green is the Tokai layer of a hard stratum. 6. The thin yellow which is west here and there is the alluvium of a loose sands layer. 7. White is the alluvium of loose clay and a silt stratum. The area noticed about an earthquake or especially flood damage could be called No.6 and No.7. Moreover, the area noticed especially about a typhoon could be called No.4 and No.5. Only it and a fire want to take care anywhere. A strong house protects a family's life too. A left figure is the newest Nagoya foundations figure. It carried from civil engineering meeting central part branch work.