• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.5
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• pp.3192-3202
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• 2014

This study has its purposes on analyzing specific features of the elements according to scales of 32 main buddhist sancta among wooden temples with gable roof that are nationally designated as cultural assets, and analyzing influences and proportional relations between main and submaterials, so that it could be basic and objective data for restore and repair cultural assets in the future. Results of the study are following. First of all, the average plane proportion of doritong (facade) and yangtong (side) in 3-room building is about 1.31:1, while it is 1.70:1 in 5-room building. Secondly, as a result of analyzing the locational proportion and thickness of pillars at each location, floor room turned out to have wider space between pillars than that of edge room or side room in both cases of 3 and 5-room buildings. In the mean time, for the average thickness of the pillars in 3-room building, it was 491mm for corner pillars, 433mm for general pillars in cases of 3-room building, while it was 595 and 511mm respectively in cases of 5-room building. The reason why corner pillars are 60~80mm thicker than general ones in average, is determined to considered structural stability and optical illusion. For the third, as a result of analyzing the influences on pillar thickness, eaves projection and eaves height according to the scale(dimension) of buildings, 3-room buildings have outstanding correlation as its scale(dimension) goes bigger, while 5-room ones are not very much influenced by its scale(dimension). For the fourth, as a result of the relation between pillars and eaves, both of 3 and 5-room buildings have longer-projected and higher eaves as their pillars go taller; especially height of eaves turns out to have very close relation between length of pillars. In addition to that, both of 3 and 5-room buildings have much projected eaves as the eaves go higher.

• Journal of the Korean Wood Science and Technology
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• v.34 no.1
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• pp.15-22
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• 2006

ln order to manage efficiently many ancient wooden buildings, which have been preserved as cultural properties in Korea, the internal state of wood members should be evaluated exactly and periodically by a NDE (non-destructive evaluation) method. A research project was planned to develop an X-ray CT (computed tomography) system as a NDE method for wood, which could be easily applied in field. This paper includes the first part of this project. First of all, to establish a measuring procedure of wood density using X-ray radiography, the correlation between X-ray intensity and the film brightness was evaluated. Also, initial X-ray intensity was quantified with various radiate conditions controlled by the tube voltage and tube current. And then, the effects of density, annual ring angle, and thickness on the mass attenuation coefficient of wood were examined. Finally, Beer's law was modified with the above results and adopted to calculate the density of wood. As a result of this study, the measuring procedure of wood density was established using a portable soft X-ray device and this procedure was verified with some small wood specimens. This results will he used valuably for the following researches to develop a portable X-ray CT system.

• Korean Journal of Heritage: History & Science
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• v.49 no.2
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• pp.20-55
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• 2016

Koguryo's tomb mural paintings in North Korea are our precious cultural heritage which have been designated as UNESCO World Heritage property receiving high praise in the following criterion, i) exceptional creativeness of human being, ii) representative value showing the stage of development in construction history of East-Asia, iii) aesthetic superiority iv) uniqueness of building construction including tombs' ceiling. Mural paintings have been found from almost 100 tombs of the Koguryo dynasty out of 130 which are scattered across Huanren County, Lianoning Province, Ji'an, Jilin Province in China and Pyongyang in North Korea. Especially, most of them are gathered in Pyongyang from 4th and 5th century. Peculiarly, some of them have been constructed before King Jangsu's transfer of the capital to Pyongyang(AD 427). It can be regarded that Pyongyang territory had been under control of Koguryo and to become a new capital in the near future. And dense emergence of such tombs since the capital transfer from Gungnae City to Pyongyang during the reign of Jangsu is linked closely to the construction of tombs for rulers under strengthen royal authority of Jangsu and centralized system of authoritarian rule. Tomb mural paintings describe the owner's figure pictorially based on the truth just as in his living years. General lifestyles of ruling powers and sovereigns can be seen from the wall paintings portraying several buildings with various styles, figures, manners of living, which are considered that the tomb owner had led politically and sociologically in his life. In spite of not enough proofs to approve figure of architectures or "Gong-Po" in wall paintings on the tombs as those of Koguryo, it is persuasive with consideration for painting and decoration inside the tomb like wooden building in real life for the purpose of reenacting and continuing the tomb owner's luxurious life after death. "Du-Gong-Po-Zak" had appeared in company with Koguryo tomb murals and it can be found in most of the murals. And the emergence of substantial "Gong-Po-Do" can be counted more than a century ahead of the figure in murals. It could be a reasonable assumption as regards Koguryo tomb murals time of appearance match up with production period of Gahyungmyunggi(家形明器) and Hwasangseok(畵像石) Hwasangjeon(畵像塼) Design in the Mural Painting of the East-Han(東漢) Ancient Tombs in China. On this study, architectural "Gong-Po"s described in Koguryo tomb murals are categorized largely in "Bi(non)-Po-Zak-kye", "Jun(semi)-Po-Zak-kye", and "Po-Zak-kye" based on presence of "Ju-Du", "Cheom-Cha", and "Cheom-Cha-Sal-Mi" with developmental aspect, and, "Po-zak" is subdivided as "Bi(non)-Cheul-Mok" and "Cheul-Mok" types.