As Sri Lanka Stupa had been affected by Indian stupa directly, understanding Sri Lanka Stupa is important to know about the flow of Buddhist Art History, which is showing the variation of Initial Buddhist stupa. Due to invasions and disasters, all Sri Lanka’s Stupa collapsed and became random mound. After restoration works, Stupa shape changed dramatically from the Initial shape to Existing shape. Since it is hard to find out how Initial stupas were like, Sanchi Stupa needed to be an example for the comparative study as an Initial shape. Sri Lanka Stupa have Square foundation and 3 Basal rings that are supporting the Main Dome. Entrances are on all 4 sides, Railing and Torana(gate) has never found in Sri Lanka stupa. Sri Lanka stupa has been classified with the shape of Dome into 6～8 types according to 『Vijayanta Potha』, the Ancient Buddhist Description, and described by several researchers confusingly. With the inconvenience of using unfamiliar words and irrational gap between the Initial Sri Lanka stupa and Existing Sri Lanka stupa, proposing new classification of Sri Lanka Stupa is necessary. Existing Sri Lanka Stupa can be classified into 4 types : which is ➀Bell type, ➁Pot type, ➂Mound type, ➃Bubble type. This suggestion is for further studies to use Easier and shorter words to describe the types and make it reasonable to use, since the current classification includes 3 stupa types even there is no case for any of them. Restrict Stupa Classifications within existing Sri Lanka Stupa is needed because the current classification had been continued for hundreds of years without any adjustments. Bell type is mainly located in Anuradhapura. Pot type and Mound type is only found in limited area, and Bubble type is located in most area of Sri Lanka.

Hanok recently is getting attention by Korean wave and the eco-friendly construction. However it has the not a few . weak points to live in modem and been recognized as a big problem such as efficiency problem, hight cost to construct and maintenance difficulty to be solved. The solution are the modularity and weight lightening of Hanok but the roof is one of the most difficult parts of it, the roofrepresents the beauty of Hanok with graceful catenary line, filling timber and soil should be improved to the modem materials and construction methods as an alternative. As the result, this study conceives the improvement figuring out the problem and the case study review as well as suggests the valuation of feasible plan and the potential for modularity by application of the actual field. The roof is consisted of the framework as the constructable role on the upper part of roof board, the insulation and air layer as well as additional roof board should be installed to make easy the roof construction and attach the vapor permeability water proofed paper. Accordingly, Additional rafter, Diaphragm board and Panel can be used as the alternatives. and this reports the possibility of workability, modularity applied in the field. The results of this study are expected to improve the efficiency of the waterproofing of roofs, insulation, maintenance, etc and so on contribute to the pervasiveness of the hanok.

Hanok recently is getting attention by Korean wave and the eco-friendly construction. However it has the not a few weak points to live in modern and been recognized as a big problem such as efficiency problem, hight cost to construct and maintenance difficulty to be solved. The solution are the modularity and weight lightening of Hanok but the roof is one of the most difficult parts of it, the roof represents the beauty of Hanok with graceful catenary line, filling timber and soil should be improved to the modern materials and construction methods as an alternative. As the result, this study conceives the improvement figuring out the problem and the case study review as well as suggests the valuation of feasible plan and the potential for modularity by application of the actual field. The roof is consisted of the framework as the constructable role on the upper part of roof board, the insulation and air layer as well as additional roof board should be installed to make easy the roof construction and attach the vapor permeability water proofed paper. Accordingly, Additional rafter, Diaphragm board and Panel can be used as the alternatives. and this reports the possibility of workability, modularity applied in the field. The results of this study are expected to improve the efficiency of the waterproofing of roofs, insulation, maintenance, etc and so on contribute to the pervasiveness of the hanok.