In this paper, we examined how large beams were developed in Korea, China, and Japan in the 6th and 8th centuries, and how this pattern affected Korean architecture later. A large inner space was required to symbolize the authority of the emperor and king and to achieve the purpose of enshrinement of a large Buddha statue forming a cluster, and a large beam over 9m was used to implement this. The use of large beams is confirmed from the late 4th century in China and from the late 5th century at the Seoyeongchonsa Temple Site in Nanjing. In Korea, it is identified from the Lecture hall of Neungsan Risa Temple Site in Baekje(567) and from the middle Buddhist shrine Temple in Hwangnyongsa Temple in Silla(584). Goguryeo is presumed to be around the 6th century, a little earlier than that. In Japan, large beams were used for the first time at the the Lecture hall of Bijosa Temple in 588, which was built by a Baekje engineer. From ancient times to the modern era, the inner space length of the Korean, Chinese, and Japanese architecture was exceptional in some cases, but 9-12m was common. This is judged to be the result of the experience of the material limitation of wood and the size of the inner space established in ancient architecture affecting future generations as a precedent.

Digital restoration of non-verbal expressions is difficult to trust unless the documentation. The purpose of this study is a new documentation methodology that can intuitively confirm the basis for restoration. The technical method utilized the BIM program function by referring to Italia's VRIM and Korea's HBIM cases. And the direction of documentation distinguishes between 'positivism' based on archaeological data and 'interpretivism' based on hypotheses. Specifically, it was applied to the 'Mireuksa Restoration Project' and tried to document it experimentally. This documentation proposed a framework for recording evidence according to sources based on the context of regions. Technically, the data organized in the Excel DB were directly input into the 3D model using the BIM program function. So, the user was able to intuitively review by matching the absence of the model and document information. The documenting method of this study is flexible to modify the restoration information whenever new evidence is found. And it has the advantage of being able to easily inform by converting it to IFC format.

The purpose of this study is to analogize the appearance of Korean Ancient Architecture in view of the Stone Remains from 3 Kingdom Period to Unificated Shilla Period. But in these period, there is no building remains but some stupas and fine arts. Especially, there are many architectural appearance and revealing signature in these Historical Stone remains. Architectural elements which are analogized by stone remains what has value as historical materials by preservation of original form from 3 Kingdom Preiod to Unificated Shilla Period are as follows : 1) Platform, the representative characteristic of Korean traditional architecture, was frame structure and accumulate structure. And circular or square footing stood a same shape column on it is put on the platform. 2) In the case of column, there used entasis column and inclined column and circular chamfer technique was applied on the top side of it. Upper side of column, capital and head pentrating tie that small bearing block was put on the center of it was joined. And longitu야nal rest(長舌) supported a cross beam. Capital and small bearing block had no bottom heel, and heel side was curved and straight. Centered bracket structure was often used, and multi bracket structure is not used yet. Inward incline technique was used. 3) Inward opening pair door which had lintel, threshold, doorjamb was usually used, Fixing stone was used for structural safety, and circular handle and lock was used for decoration. Handrail was used on the edge of wooden floor for decorative effect and safety. 4) Square rafter and circular rafter were used in the same period and so did flying rafter. Double eaves and single eave were used in the same period but, single eave was usually used. In this period, square rafter was usually used. This would be studied more by comparing with Japanese wooden architecture. 5) Hipped roof was used and half-hipped roof was not used yet. In front of th hip, there are small sculpture called Jap-Sang(雜像), and windbell was hang on the end of the hip rafter. Concave roof tile, convex roof tile, round eaver tile, decorative tile at end of roof ridge were used. Lotus style was well used on the face of roof tile for decoration. From the results of this study, wooden architecture of Unificated Shilla period was simple compare to Koryo dynasty and Chosun dynasty but, it had some brilliant character. It was hard work that analogized the form of non-existent wood architecture of Ancient Korean period by restricted stone remains. But, in addition to the results of this study and research of old documentations, more study should be go on.

While Shandong Province is the largest historical and cultural and the first agricultural province in China, in recent years, due to the accelerated urbanization and modernization process, the conflict between traditional culture and modern civilization has had a serious impact on rural culture, and the ancient architecture among the villages in Shandong has also caused certain damage. These ancient buildings scattered in various villages in Shandong are important historical and cultural resources, the embodiment of Shandong traditional culture, and have an important role in the revitalization of rural culture and the enhancement of rural cohesion. However, research on the subsequent survey, conservation and restoration, and tourism development of ancient buildings in Shandong has lagged behind, and the role of these buildings in the inheritance of traditional Shandong traditional culture has not been given due attention, and their role in the construction of rural culture in the new era of Shandong has been seriously neglected. Tourism utilization is generally considered to be the preferred way to solve the conservation problems of ancient buildings. This study argues that the cultural revitalization of rural culture can be driven by the tourism and cultural industry of ancient buildings, and it can also provide a strong and sustainable power source for the rural revitalization strategy of the whole Shandong Province.

The door in Chinese ancient architecture was regarded as a face of a building group. The decoration made by the ancients on the door is the most beautiful in the entire building. Whether or not a building group has a door leaf, as a place for people to enter and leave the building, the door frame is a must. Thus the door frame is an inevitable ubiquity of the architectural community. According to different regions and its different materials, the decorative methods and decorative themes of their door frames have their own characteristics.