The general contractor business in South Korea settled in the railway construction during the Daehan Empire, but depending on the construction intention and circumstances of the railroad, relationship among employer-contractor-subcontractor and their roles under the system of the construction process had changed. At the time of laying the Gyeongin and Gyeongbu-rail, the Empire, which had no capital and technology, passed all the power and responsibility of the rail laying to the contractor, who was involved in most of the process. After this, the empire tried to lay Gyeongui-railroad without the help of other countries. Japan prepared for the Russo-Japanese War and decided to construct the railway rapidly, and completed the railway in parallel with direct management work and contract work. From that time on, the general contractor would only do the work. During the construction of railroad in Daehan empire, the general contract business system was established. The ambiguous process was sorted out and divided. At this time, subjects in charge of design and construction has been divided. The internal organization of the project owner and the contractor were organaized and specialized.

This study focuses on the architectural changes of stele pavilion at the royal tombs of Joseon Dynasty. Throughout the survey on overall forty two stele pavilions, they were classified into basic type, expanded type, and 4-side corridor type. Basic type was usually used for general small stela, while expanded type was for extraordinarily large ones. 4-side corridor type, however, turned out to be used for both small and large stela and has appeared only during King Gojong period(高宗年間, 1863-1907). When it was first applied at Geonwolleung(健元陵) in 1870s, the purpose of 4-side corridor type seemed to stabilize the enlarged structure due to the size of the larger stele. Later, 4-side corridor type was repeated for small stela at Hongneung(洪陵) and Yureung(裕陵) in 1898 and 1904 respectively, to express higher dignity of Daehan Empire(大韓帝國). This type of plan continued to other pavilions in the center of Seoul such as Kinyeombijeon(紀念碑殿) and Seokgojeon(石鼓 殿) that were built in 1903 with sophisticated proportion and multiple brackets. This architectural change implies that stele pavilion itself has become more significant than stele inside.

The purpose of this study is to examine the construction industry of Korea from the 1920s to the 1930s by analyzing activities of construction-contractors trying to overcome the recession of the construction industry and intensified competition in the industry. In this paper, I looked at the activities of Hanazono Sakichi as concrete examples. First of all, with the strategy of the vertical integration, by manufacturing and selling building materials, Hanazono Sakichi expanded his company and the scope of contract business. The second, he attempted to diversify related projects. Through related diversification, he seemed to have earned not only land management profit but also advantages from related construction. These aspects were not only seen by Hanazono’s activities but also by other contractors’. On the other hand, a few contractors have taken over a trust company to secure the funds for land management. Attempts to maximize personal interests through the expansion and diversification of contractors' business can be seen as overcoming the pre-1920s environment, where almost construct works were ordered under the government, and creating opportunities for the private sector to work and make profit by themselves. In the end, it can be mentioned that ‘the contractor’ established ‘the construction industry’ through this process.

The grade of East Asian architecture is generally classified by the size, the shape of the roof, and the type of bracket set. The craftsmanship of columns, beam, purlin, stylobate, column base stone and paintwork is also a contributing factor for such classifications. These classifications can be found not only in historical documents such as Oksajo(屋舍條) of Samguksagi(三國史記) but also in house details regulations of residential architecture(家舍規制) of Joseon Dynasty. However, there are differences in detailed designs among the same grade of architecture regardless of the classification. In this research, the Palace, the Royal Residence(宮家), and the Jaesil(齋室) are considered as the Palatial Buildings and Royal Residences. And the advanced architectural ㅇ details which appear only in the Royal Architectures are defined as the ‘The Architectural Crafts as a Code of Manners’. The Architectural Crafts as a Code of Manners is detailed design, which can be seen as fabrication of materials and supplementary factors. The Architectural Crafts as a Code of Manners used in the Palatial Buildings and Royal Residences reveal the types and their historical changes. This research will present a basis for the repair and restoration of cultural heritages to be carried out in the future, and also prevent them from further damages, thus help to preserve the cultural heritages.

The harsh economic conditions of Buddhist temples in late Joseon dynasty, and the prevalence of the Buddhānusmrti(念佛) practice, which is a practice of reciting Amita Buddha(阿彌陀佛), led Buddhist temples to organize the Buddhānusmrti association(念佛契) in the nineteenth and early twentieth centuries. For the practices and the activities of organization, an architectural facility was required; thereby, many temples had a Yeombul-dang(念佛堂). However, only a few of the Yeombul-dang have survived and are known today. This research investigates the ways temples tried to acquire Yeombul-dang buildings during the period and their architecture characteristics by reviewing historical records and documentary works of literature. In this research, Yeombul-dang is found to have various types of building names and building forms. Different hall names such as Amitābha Hall(佛殿), Yosa(寮舍) and Daebang(大房) were used as Yeonbul-dang. The commonalities and differences in terms of building forms, spatial elements composition and layouts were found depending on how they were acquired. The Yeombul-dang were most commonly built as multi-complex buildings consisting of worshiping rooms and residential areas. Most of Yeombul-dang were located in the central areas of the temple site. On this basis, this research suggests the possibility that many Yeombul-dang is still being used under different names and for different purposes.