ブックタイトル「近代の文化遺産の保存理念と修復理念」英語版

概要

「近代の文化遺産の保存理念と修復理念」英語版

57be protected against air raids, so that damagewould be mitigated for continued operation.In some cases, it would even be cost efficientto demolish a part of the factory facilities toobtain open spaces. It did not matter whetherit was as a result a rational judgment or not.The history of industries relies on the fact thatthese investments were actually made based onwhat was then believed to be rational. Therefore,all industry-related modernization heritageproperties can be said to be significant from theviewpoint of history of industrial technology.2. The Significance of Modern CulturalHeritage Properties from the Aspect ofIndustrial TechnologyThere are two major points in evaluating thesignificance of modern cultural heritageproperties from the viewpoint of industrialtechnology.(1) Representing industrial technologyemployed at the facilityThese properties convey how the industry basedat the facility operated. In order to maintainthis significance, it is necessary to preserveand restore them in a way so that it would bepossible to explain how they operated whenit was a working facility of the industry. Forexample, the group of railroad facilities atUsui Pass has been well adapted to sightseeing,together with the neighboring Usui PassRailway Heritage Park. Had only the Meijiperiod brick masonry bridge or tunnels, nowincorporated into a promenade, been removedfrom their surrounding environments, it wouldhave been difficult for a non-professional torecognize them as components of a railroadsystem. It is ideal for industrial heritageproperties to be preserved in a way that depictstheir former function, which in this case ashaving had trains crossing over it, and to havethem restored based on actual traces had theybeen altered .　The focus of the following sections will be onaspects of conveying the industrial technologyonce employed at the factory. The followingparagraphs will deal with issues in preservationand restoration regarding the second point ofsignificance, as will be explained below.(2) Representing civil engineering andarchitectural technology adopted inconstruction of the facilityTechnology that created the industrial facilityis also industrial technology of the engineeringand architectural fields. Although culturalproperty structures with long histories havegenerally been repeatedly reroofed or havehad earthen walls repaired and re-plastered,there are modern cultural heritage propertiesthat retain their conditions from the timeof construction. With reinforced concretestructures, almost entirely, and in the case ofbrick masonry which is comparatively easy topartially repair, much of the portions remainoriginal. Therefore, from these properties, weare able to understand the civil engineeringand architectural technology at the time ofconstruction. There are two issues regardingpreservation of such structures.　First, in the process of restoration, tracesof the original construction methods thatdemonstrate industrial technology are lost.This is particularly evident in treatment ofreinforced concrete structures. Constructionduring the Second World War, in whichsteel reinforcement is sparse and the cementaggregate ratio is proportionally high, canbe seen widely. This indicates the tendency