{"id":41064,"date":"2023-06-27T05:47:00","date_gmt":"2023-06-26T20:47:00","guid":{"rendered":"http:\/\/kochihen.replan.ne.jp\/?p=41064"},"modified":"2023-06-27T18:18:33","modified_gmt":"2023-06-27T09:18:33","slug":"%e3%80%90%e5%9f%ba%e7%a4%8e%e9%ab%98%e3%81%a8%e6%96%ad%e7%86%b1%e6%94%b9%e4%bf%ae%e5%b7%a5%e6%b3%95-%e6%9d%b1%e5%b7%9d%e3%81%ae%e3%82%a2%e3%83%88%e3%83%aa%e3%82%a8-3%e3%80%91","status":"publish","type":"post","link":"http:\/\/kochihen.replan.ne.jp\/?p=41064","title":{"rendered":"\u3010\u57fa\u790e\u9ad8\u3068\u65ad\u71b1\u6539\u4fee\u5de5\u6cd5 \u6771\u5ddd\u306e\u30a2\u30c8\u30ea\u30a8-3\u3011"},"content":{"rendered":"

\"\"<\/a>
\n\"\"<\/a>
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\n\"\"<\/a>
\n\"\"<\/a>
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English version\u2b07<\/p>\n

[Foundation Height and Insulation Retrofit Method Higashikawa Atelier-3
\nFreezing depth” is a major factor for houses in cold regions. Insulation methods are an old and new theme. Especially, it is a major limiting factor for insulation retrofitting of existing houses. …<\/p>\n

The house + atelier architecture in Higashikawa that we are introducing here is a case study of a newly built atelier, but the house was renovated mainly to strengthen insulation. Although we had talked with the owner, Mr. Shimizu, at the atelier of the newly built house, we were not able to cover the thermal insulation renovation of this house adequately due to his reservation, as he was dealing with a large number of people. However, the foundation height was not high enough, so they had no choice but to leave the existing floor of the first floor as it was.
\nSo, we had to visually inspect the floor from the exterior.
\nIn cold regions such as Hokkaido, there is a concept called “freezing depth,” which means that there is a risk of the ground becoming uneven due to the freezing of water in the soil during the winter, and for this reason it is necessary to “dig down” the foundation to a certain depth. For this reason, it is necessary to “dig” the foundation down to a certain depth. In a cold region like the East River, the value is defined as 80 cm, but the existing house seemed a bit low on the ground surface visually on the exterior.
\nI had heard the explanation that this building was nearly 40 years old, but the details of the building’s age, up to the comparison of the building’s age with the age at which the freezing depth standard was established, are not known at this time. However, it still seems to be unsound as far as visual inspection is concerned. However, it is unknown because the ground surface may have been excavated below the above-ground portion.
\nAt this Shinjyukyo meeting, Dr. Norihiko Kamata also raised the issue of new foundation insulation. This is one example of how insulation retrofitting requires various “construction method options” depending on how the existing house is built. It is extremely difficult to raise the foundation of an existing building. It would be difficult to lift up the entire existing building. If you want to go that far, it is much more cost-effective to demolish the building and build a new one. In this case, traces of renovation from the outside of the foundation could be confirmed, but it could not be checked in a short time, including the existence of vents.<\/p>\n

The photo shows the foundation height of the existing renovated house at the top and the newly constructed atelier at the bottom. Visually, the difference in height above ground is clear. If the foundation height of the newly built side is secured, it would be possible to make various modifications to the foundation in the future.
\nOn the other hand, the existing building may be limited to digging up the soil around the perimeter and installing “skirt insulation” or similarly digging up the soil and reinforcing the insulation on the outside of the foundation. In the Niseko area, where I have recently been traveling away from home often, such foundation heights are uniformly set high, partly due to the heavy snowfall.
\nI would like to mention Dr. Kamata’s proposal for foundation insulation in the conclusion of this blog report. I heard that Dr. Kamata was also interacting with the North Research Institute in Asahikawa this time. The North Research Institute also said that they would accept Dr. Kamata’s proposal. This is an interesting move.<\/p>\n","protected":false},"excerpt":{"rendered":"

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