• 한국농공학회지
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• 제43권1호
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• pp.102-105
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• 2001

This study has been done to investigate the characteristics of the wall materials of a earthen house ; the core-wall of a wood-frame house and the mud-wall of a all-wall house. A series of tests is carried out to study the physical properties of wall materials which are picked from existing earthen houses. The core-wall materials are composed of sandy soil or clayey soil with low plasticity. The mud-wall materials are sandy soil with well compaction effect. It is confirmed that the wall materials are common soils which are easily picked from the residential quarter.

• 한국가구학회지
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• 제29권1호
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• pp.40-48
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• 2018

This study analyzes the contribution of hanok that construction in reducing greenhouse gas (GHG) emissions in Korea by calculating the carbon storage of hanoks and comparing it to different housing types in Korea. The hanok is a traditional Korean house. And it were first designed and built in the $14^{th}$ century during thd Joseon Dynasty. According to our results, the number of hanoks in 2016 was approximately 547,085 which was accounting for 7.8% of the total construction market, This study found Gyeongbuk with 95,083, Jeonnam with 88,981, Gyeongnam with 76,388 and Seoul with 43,519 hanoks. According to the GHG Inventory Report for 2016, Korea's total annual GHG emissions amounted to 650 million $tCO_2$, with the carbon stocks in hanoks amounting to 19.2 million $tCO_2$. This accounts for 2.8% of Korea's total GHG emissions and 46.1% of the carbon absorbed by forests. Our results show that hanoks store four times more carbon than light-frame-wood-houses, and 15 times more carbon than concrete-reinforced and steel-frame houses. The main factors causing the hanok industry slowdown are the high construction costs, lack of government support, and insufficient knowledge of hanok architecture. Therefore, to further increase the carbon stock of hanok, more research is needed to improve the technical use of wood and reduce construction of the hanok and prepare legal and institutional arrangements related to hanok industry.

• Journal of the Korean Wood Science and Technology
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• 제45권1호
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• pp.1-11
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• 2017

건축물에서 냉방과 난방에 많은 양의 에너지가 소요되고 있다. 건축은 $CO_2$ 발생을 줄이고 에너지 소비 저감을 위하여 냉 난방 부하를 최소화할 필요성이 있다. 그리고 최근 주거문화는 친환경적이고 실내 쾌적성을 중시하는 방향으로 변화하면서 단독주택의 수요가 증가하고 있다. 국내 단독주택의 구조는 크게 조적조, 콘크리트조, 목조 주택으로 구분할 수 있다. 따라서 본 논문은 세 가지 구조방식(조적, 콘크리트, 목조)으로 구성된 동일 면적 단독주택의 냉 난방 부하와 에너지 요구량을 분석하였다. 구조방식별 벽체, 지붕, 바닥 레이어를 구성하였고, 각 레이어의 열관류율(U-value)은 목조 벽체와 같이 스터드를 고려해주기 위하여 PHPP 계산법을 이용하였다. 또한 스터드 유무에 따른 차이를 비교 분석하기 위하여 목조 벽체에서 스터드를 고려하지 않은 경우(비 스터드)를 분석하였다. 분석은 엑셀을 기반으로 자체 개발한 냉 난방 부하 산출 프로그램(CHLC)과 ECO2를 이용하였다. 냉 난방 부하와 에너지 요구량 결과, 목조 구조가 가장 높은 결과를 보였고 콘크리트 구조는 두 번째로 높은 값을 유지하는 것을 확인하였다. 두 구조방식은 에너지소비 측면에서 불리하다고 판단하였다. 결론적으로, 동일한 조건에서의 조적 구조는 다른 구조방식에 비하여 냉 난방 부하 및 에너지 요구량에 있어 유리하며, 목조 구조에서 스터드로 인한 열교를 제외한다면 에너지소비를 줄일 수 있다고 판단되었다.

• Journal of the Korean Wood Science and Technology
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• 제45권6호
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• pp.828-835
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• 2017

Airtightness of buildings is one of critical aspects of its energy performance. To build up references of airtightness of wooden houses built in Korea, blower door tests have been carried out in 42 houses since 2006. Causes of air leakage were investigated recently. The average value of air change rate was $3.7h^{-1}$ for light frame house and $5.5h^{-1}$ for post-beam construction at ACH50 (air change per hour at 50 Pa air pressure difference). Foam type insulation was more advantageous in ensuring building airtightness than glass fiber batt. Airtightness of wooden houses which were constructed after 2010 was improved to have less than $1.5h^{-1}$ of ACH50, threshold for application of artificial air change. The average air change rate of CLT (cross laminated timber) houses showed the lowest value, $1.1h^{-1}$, among the tested structures.

• Journal of the Korean Wood Science and Technology
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• 제11권2호
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• pp.27-40
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• 1983

최근(最近) 우리나라에서는 목재외(木材外)의 타계재료(他界材料)로의 건축(建築)이 이루어지고 있으므로 목조건축(木造建築)에 관한 연구(硏究)와 관심(關心)이 급속(急速)히 감소(減少)하고 있다. 이것은 국내(國內)에서의 목재생산(木材生産)이 극(極)히 저조(低調)하고 가격(價格)의 폭등(暴騰)으로 나타난 필연적(必然的)인 현상(現象)이라 하겠으나 목조건축(木造建築)이 아닌 타계재료(他界材料)로 시공(施工)한다고 하여도 목재(木材)는 꼭 쓰여지기 마련이다. 그러므로 주택(住宅)을 중심(中心)으로 각종건축물(各種建築物)의 구조(構造)를 이해(理解)함으로써 보다 합리적(合理的)인 목재이용(木材利用)을 꾀할 수 있을 것이다. 특히 목조주택(木造住宅)에 의존(依存)하고 있는 미국(美國)에서 경구조(輕構造)(light frame house construction) 또는 조립주택(組立住宅)(prefabricated house construction)에 의(依)한 목조주택건설(木造住宅建設)에 관(關)한 새로운 연구(硏究)가 착실(着實)하게 진행(進行)되어 큰 성과(成果)를 거두고 있어서 값 싼 주택(住宅)의 양산(量産)에 많은 도움을 주고 있음은 물론(勿論)이고 농용건축물(農用建築物)의 건설(建設)에도 크게 활용(活用)되고 있다. 더구나 8시간(時間)만에 한 채의 주택(住宅)을 건설(建設)할 수 있는 8시간건축(時間建設)(8 house construction)의 체계(體系)가 연구개발(硏究開發)되어 증가일로(增加一路)의 주택수요(住宅需要)를 메꾸어 나가고 있어서 우리나라에서도 부면(部面)에 관한 연구(硏究)가 추진(推進)되어야 할 것으로 믿는다.

• Journal of the Korean Wood Science and Technology
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• 제44권2호
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• pp.264-273
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• 2016

The insulation of a building envelope influences the hygrothermal performance as well as the thermal performance of the building. While most of Korean wood frame houses have an interior insulation system, the exterior insulation system with high thermal performance has recently been applied. While it can be effective in energy savings for better insulation performance, without consideration of the moisture, condensation and mould growth can occur. Therefore, in this study, hygrothermal behaviour, water content, and mould growth were analyzed using hygrothermal simulation of an exterior wall of a wood frame house with which the interior insulation and exterior insulation systems were applied. The wall layer included Wall A (Interior insulation) and Wall B (Exterior insulation). The U-values were identified as 0.173 and $0.157W/m^2K$, respectively. The total water content and OSB absolute water content of Wall A were confirmed to be higher than those of Wall B, but the absolute water content did not exceed the reference value of 20%. The moisture content of the two walls was determined to be stable in the selected areas. However, mould growth risk analysis confirmed that both Wall A and Wall B were at risk of mould growth. It was confirmed that as the indoor setting temperature decreased, the mould index and growth rate in the same area increased. Therefore, the mould growth risk was affected more by indoor and outdoor climate conditions than by the position of the insulation. Consequently, the thermal performance of Wall B was superior to that of Wall A but the hygrothermal performances were confirmed to be similar.

• Journal of the Korean Wood Science and Technology
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• 제45권2호
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• pp.147-158
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• 2017

Among the energy consumption in building, the heating energy takes the largest part. Therefore, it is important to minimize the heat energy loss in building for the reduction of overall energy use in construction. The most important points for the minimization of energy loss in building are insulation and airtightness. Especially, in wood houses, airtightness is very important for energy saving as well as increase of durability. However, the researches on airtightness of wood buildings have been started recently and are very deficient especially in Korea. In this study, air leakage properties and airtightness performance were evaluated for light-frame wood houses built in Daejeon and Chungnam area. Total 7 houses were evaluated, among which four houses (Case 1 to Case 4) were in the construction stage before interior finish and the other three houses (Case 5 to Case 7) were after completion of construction work. The tests for airtightness were conducted by pressurization-depressurization method, and the factors included in the measurements includes air leakage rate at 50 Pa (CMH50), air change rate at 50 Pa (ACH50), equivalent leakage area (EqLA) and EqLA per floor area. As a result of this study, key air leakage points in wood houses were found to be the gaps between floor and wall, the holes for wiring and plumbing, the double glasses windows and the entrance doors. The average value of ACH50 for the houses after completion of construction work was $3.5h^{-1}$ that was similar to Europe standard ($3.0h^{-1}$). ACH50 was proportional to EqLA per floor area but inversely proportional to the internal volume, the net floor area and the area of window.

• Journal of the Korean Wood Science and Technology
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• 제37권3호
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• pp.177-183
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• 2009

경상북도 청도군에 있는 4곳의 고택을 답사하고 기둥의 특징을 분석함과 아울러 기둥 부재 시료를 대상으로 광학현미경 기법을 사용하여 수종 식별을 실시하였다. 기둥은 직경(또는 한 변의 길이)과 배치 간격, 높이 등이 서로 관련성을 갖는데 기둥 사이의 간격에 따라 보통 기둥의 직경과 기둥의 길이를 기본단위로 하여 축조됨을 알 수 있었다. 수종 식별 결과 3곳의 고택에서는 침엽수 목재가, 1곳의 고택에서는 활엽수 목재가 확인되었다. 이중 활엽수 목재는 밤나무이고 침엽수 목재는 모두 소나무인 것으로 식별되었다. 전통적으로 목구조부재로 소나무가 많이 사용되었다고는 하나 일부 활엽수재도 구조용재로 사용된 것으로 밝혀졌다.

• Journal of the Korean Wood Science and Technology
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• 제24권3호
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• pp.65-71
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• 1996

In the design of wood structures, the consideration of the dynamic load effect has been increased. Generally, damping ratio is presented as the method of considering dynamic load effect. So, the relationship between joint type and damping ratio was investigated. It has been known that the joint extremely damp the dynamic load in wood structures. Static test was performed to determine the effects of nail size and friction area on joint strength and stiffness. Joint strength and stiffness were increased with nail size. However, the static properties of joint was not affected by friction area. Cyclic test was performed to determine the effects of nail size, friction area and load magnitude on damping ratio, Damping ratio was affected by all factors. Increasing the width of the bottom plate was suggested as the most adequate method to increase the damping ratio without the reduction of the static properties of the structures.

• 가정과삶의질연구
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• 제16권4호
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• pp.167-182
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• 1998

The purpose of this study was to investigate actual condition of the modern adaptation of interior elements (wall floor ceiling door & window) in traditional house. The examined objects were 316 pictures of residential interior spaces from the 5 different monthly magazines between Jan. 1993 to Dec. 1997 The results of this study were as follows; 1. Mostly they were either parital adaptation from the original or partially transformed adaptation rather than entire adaptation of the original 2. Of the traditional interior elements adapted in residential space only specific elements were being adapted. For example. partial adaptation from the original were oiled paper flooring(Jangpan) rice papered wall (Hanji) a ceiling finish that left the rafters and beams exposed (Yondunt-chonjang) and window or door frame which is vertical lattices accented with horizontal lattices grouped into three sections(Ttisal-mun)And partially transformed adaptation were wood flooring(Chang-maru) rice apered wall(Hanji) Yondung-chonjang wind or door frame of Wan character(Wanja-mum) 3. In regard to space the mostly adapted spaces were bedrooms rather than living or dining rooms.