Abstract:Comparative analysis of the material criteria embedded in building sustainability assessment tools was performed. The material-related issues were identified, classified, and summarized. A framework, the triple bottom line of sustainability (environment, economy, and society), was used to examine the material assessment criteria, evaluation parameters, and descriptions. The material criteria were evaluated to identify the current features and weaknesses as balanced material assessments for sustainable development. The criteria showed significant differences in their scopes in covering the social and economic aspects beyond the environmental aspect. For comprehensive sustainability assessment purposes, it is essential that adequate attention be paid to all three dimensions. Finally, this paper proposes the indicators of the sustainable material assessment from an analysis of all the material-related items.

This paper examines the integration of sustainability principles into architectural education programs at South Korean Universities that have been accredited by the Korea Architectural Accrediting Board (KAAB). Accreditation requires the successful implementation of 30 so-called Student Performance Criteria (SPCs). Similar to recent improvements to international architectural education, different principles of sustainability have been successfully implemented by the KAAB. This paper identifies eight sustainability-related SPCs that can be utilized to teach sustainability. The analysis of 48 accredited five-year architectural education program curricula in South Korea has revealed which sustainability-related SPCs are addressed each semester. Furthermore, the average number of credits per sustainability-related SPC in different course types, such as theory courses and design studios, has been identified. Theory courses with an emphasis on sustainability education have been defined as sustainability core courses. The results reveal that a majority of existing programs primarily address environmental aspects of sustainability. Furthermore, a sequential course structure analysis elucidates three main curriculum types, with different potential for integrated sustainability education in sustainability core courses and design studios: (i) sustainability core course preceding (high potential); (ii) sustainability core courses and design studio, accompanying (high potential); and (iii) sustainability core course following (low potential).

Social and policy interest in the modernization and revitalization of the Korean traditional house (Hanok) has increased recently in Korea but its low thermal performance is one of its weaknesses. A feasibility study was conducted to evaluate the suitability of a Phase Change Material (PCM) in a modernized Hanok. The research method involved a test of the heating and cooling load reduction and Predicted Mean Vote (PMV) analysis for human comfort using an Esp-r simulation adopting multi variable PCM types as the building wall composite. The influence of PCMs on reducing the building energy load was assessed as a criterion for upgrading materials and infiltration to the passive house regulation. Compared to the base case, the heating and cooling load reduction ratio were as follows: Case 1 (old-Hanok), 10%; Case 2 (Korean Building Act), 21%; and Case 3 (passive house regulation), 53%. The optimal phase change temperatures of the PCMs were Case 1 (24-26 • C), Case 2 (23-25 • C) and Case 3 (24-26 • C). PMV analysis showed that the use of a PCM can narrow the comfort range and centralize the optimal point. Therefore, the following contents can be presented as the design and material guidelines. First, the optimal PCM temperature can vary according to the combination of materials and local climate. In addition, the infiltration and insulation should be verified and a certain portion of them should be secured. Finally, the addition of insulation to a passive house level should be considered actively using a PCM as a supplement for net zero energy building (nZEB).