{"id":34061,"date":"2021-08-10T05:45:16","date_gmt":"2021-08-09T20:45:16","guid":{"rendered":"http:\/\/kochihen.replan.ne.jp\/?p=34061"},"modified":"2021-08-10T18:38:36","modified_gmt":"2021-08-10T09:38:36","slug":"%e3%80%90%e5%ae%a4%e7%94%ba%e6%9c%9f%e3%80%8c%e5%a4%a7%e9%8b%b8%e3%80%8d%e8%a3%bd%e6%9d%90%e9%9d%a9%e5%91%bd%e3%83%93%e3%83%83%e3%82%b0%e3%83%90%e3%83%b3%ef%bc%8f%e6%97%a5%e6%9c%ac%e3%81%ae%e3%81%84","status":"publish","type":"post","link":"http:\/\/kochihen.replan.ne.jp\/?p=34061","title":{"rendered":"\u3010\u5ba4\u753a\u671f\u300c\u5927\u92f8\u300d\u88fd\u6750\u9769\u547d\u30d3\u30c3\u30b0\u30d0\u30f3\uff0f\u65e5\u672c\u306e\u3044\u3044\u5bb6\u32b3-11\u3011"},"content":{"rendered":"

\"\"<\/a>
\n\"\"<\/a>
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\n\"\"<\/a><\/p>\n

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\n\u3053\u306e\u300c\u9769\u547d\u300d\u306e\u30a4\u30f3\u30d1\u30af\u30c8\u3092\u307e\u3056\u307e\u3056\u3068\u5b9f\u611f\u3055\u305b\u3089\u308c\u308b\u306e\u3060\u3051\u308c\u3069\u3002\u30fb\u30fb\u30fb<\/p>\n

English version\u2b07<\/p>\n

[Muromachi period “Daigiri-Oga” sawmill revolution big bang \/ Japanese good house \u32b3-11]
\nIn the history of lumber lumber, “Daigiri-Oga” was introduced from China during the Muromachi period in the 14th and 15th centuries.
\nDaigiri is about 2 meters long and requires two people from the left and right or from above and below.
\nCut the wood by grinding it vertically. The production efficiency of timber building materials has increased dramatically.
\nAt the Takenaka Carpentry Tools Museum exhibition, about the era after Horyuji Temple
\nWith this lumbering revolution, we are in the era of painting from split sawing to “grinding sawing”.
\nThe lumbering method up to that point was called “splitting” lumbering.
\nThe illustration exhibition at Takenaka Carpentry Tools Museum introduced earlier was as follows.<\/p>\n

The photo shows the exhibition at the “National Museum of Japanese History” in Chiba Prefecture.
\nIn split lumber, insert a wedge along the “streaks” of the cut down wood.
\nI shook the mallet down and broke it to make lumber. as a result,
\nMost of the materials that are easy to use as structural materials are easy-to-break materials such as cedar.
\nThere must have been a problem with the supply of lumber due to the remote distance between the land used and the logging area.
\nThe reality of this sawmill was an obstacle to the evolution of Japanese wooden technology.
\nWhen all the fragile trees were collected, the supply became scarce.
\nRyotaro Shiba’s essay also touched on the changes over time in large-scale wooden architecture in Japan.
\nIt is said that the number of large wooden buildings will decrease from the Nara period, when it was flourishing, to the Muromachi period.
\nMr. Shiba took so much time to reforest as a result of logging being exhausted.
\nHowever, it seems that the situation was before the introduction of this Daigiri.
\nFrom Shitennoji \/ Horyuji to Todaiji \/ Kokubunji in each area
\nWooden engineers spread all over the country, but eventually a sawn bottleneck arose.
\nAs a result, the number of large-scale buildings may have decreased over time.
\nEven in the explanation of the Takenaka Carpentry Tools Museum exhibition, the wood species are selected by this Daigiri.
\nIt has become dramatically diversified, and it has become possible to ship lumber from familiar mountains in each region.
\nAfter all, it took too much time and effort to use split lumber, and there were restrictions on the tree species.
\nAnd as the population of each region expands and the scale of the economy expands, the power of control also spreads.
\nIt became a reality as the Warring States period = regional revitalization.
\nPowerful people in each region activated the castle construction as a military base,
\nThis “Daigiri” revolution may have expanded the production of structural materials geometrically.<\/p>\n

It seems that the war during the Warring States period was also a competition for civil engineering and construction.
\nTakeda Shingen’s Koshu gold production and military diversion of its civil engineering technology
\nHideyoshi, who utilizes the strange civil engineering architecture such as Sunomata’s Ichiya Castle and Takamatsu Castle’s water attack, etc.
\nI think that the mass utilization of timber due to this lumber revolution has progressed in the shadow of history.
\nThe diorama exhibition implies such an ethnic revolution.
\nImports of large saws and guns as weapons during the Muromachi period are important changes in Japanese history.
\nThe guns are taken up more widely, but I think the Daigiri was even more.
\nAs the war intensified, the construction of castles for offense and defense proceeded at the same time.
\nOf course, you can imagine the actual supply of active lumber,
\nResearch activities on this matter have received little attention.
\nLooking at the actual situation of Hideyoshi’s use of huge civil engineering buildings,
\nYou can really feel the impact of this “revolution” …<\/p>\n","protected":false},"excerpt":{"rendered":"

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