• Journal of the Korea Institute of Building Construction
• /
• v.15 no.4
• /
• pp.413-423
• /
• 2015

Exterior Insulation and Finishing System(EIFS) is recognized as a promising alternative for energy reduction as energy reduction ratio of apartment is to be increased from 40% to 60% in 2017. However, EIFS is not actively applied to apartment because additional construction costs and duration are required for the current existing construction method of EIFS. Therefore, this study proposes a conceptual framework for concurrent construction method of EIFS which can reduce construction costs and duration by working sequentially from frame work to exterior insulation finishing work, and then verify the method's feasibility by analyzing a case study. It has been proven from the analysis that concurrent construction method of EIFS reduces 6.7% of construction duration and 13% of construction costs compared with the conventional exiting method. The proposed method is expected to contribute to invigorated application of EIFS to apartment.

• Journal of the Korean GEO-environmental Society
• /
• v.25 no.6
• /
• pp.13-17
• /
• 2024

The general soil nailing method, which is currently used domestically and internationally to stabilize the slopes of sandy slopes, is to form a kind of gravity-type retaining wall by drilling the ground and grouting it with a single steel bar. This method can reduce construction costs, ease of construction, relative strength and displacement, and is highly efficient. The difference between grouting and rebar adhesion to the yield pullout force and the difference between the amount of deformation in relation to the same pullout resistance was analyzed through field tests to identify engineering excellence, and in terms of construction cost, the reduction effect was evaluated by analyzing the difference in the number of drillings and the impact on the overall construction cost, such as material cost, when the same strength constant is applied to the ground with the same resistance.

• Proceedings of the KIEE Conference
• /
• 2011.07a
• /
• pp.2120-2121
• /
• 2011

현재 정부가 추진하고 있는 전기분야 실적공사비 적산제도와 관련된 최근의 움직임은 당초의 취지와 달리 실적공사비에 대한 개념 부족과 임의적 해석 등으로 실적공사비 적산제도 도입의 바람직한 방향성에도 불구하고, 실적단가 축적의 기초 자료인 계약내역서의 직접 공사비 낙찰률 적용 관계 등 실적단가의 적정성에 대한에 근본적인 접근보다 예산절감, 물가안정 측면으로 접근하여 시장단가 반영에 대한 왜곡현상이 발생 할 수 있는 제도상의 문제점으로 실적단가 축적에 대한 적정성 판단에 따른 실적단가의 보정 수단이 미약하여, 현행 법제도 하에서 실적단가의 적정성 확보를 위한 대응 방안을 제시하여 실적공사비를 정착시킬 필요가 있다. 왜냐하면 품셈에 의한 문제점 등으로 실적공사비 적산제도로 공공 건설공사의 예정가격산정 방식을 전환 하였다고 볼 때, 본 제도의 실패는 또 다른 제도로의 전환 또는 보완이 필요하다고 판단된다.

• Journal of Drive and Control
• /
• v.18 no.1
• /
• pp.62-66
• /
• 2021

• Journal of the Korea Institute of Building Construction
• /
• v.7 no.4
• /
• pp.51-59
• /
• 2007

• Construction Engineering and Management
• /
• v.17 no.1
• /
• pp.44-47
• /
• 2016

• Construction Engineering and Management
• /
• v.23 no.2
• /
• pp.55-59
• /
• 2022

• 한국도로학회지:도로
• /
• v.10 no.2
• /
• pp.58-67
• /
• 2008

교통량이 많은 도심지내 장대 지하차도 건설은 교통정체 해소에 기여를 하지만 초기 공사비가 많이 소요되는 단점이 있다. 또한, 화재등 유고시 이용자의 안전을 최우선으로 고려되어야 한다. 즉, 장대 지하차도 건설에 있어서 경제성과 안전성이 함께 만족할 수 있는 건설 방안이 필요하다. 세종지하차도는 이러한 문제점을 극복하고자 다음과 같이 지하차도의 환기방식 및 단면, 포장형식, 사고 예방 및 발생시를 대비한 종합방재시스템을 구축하였다. $\cdot$환기방식은 종류식 환기방식의 경제성과 횡류식 환기방식의 제연성능을 겸비할 수 있는 조합형 환기방식과 Duct Arch 단면을 적용하여 공사비 절감 및 운영시 유지관리비를 획기적으로 절감하였다. $\cdot$지하차도 포장형식은 화재시 내화성이 우수하며 유독가스 발생이 없는 HPC(고성능 콘크리트 포장) 포장을 적용하여 이용자의 안전을 최우선으로 고려하였고 일반 아스팔트 포장 및 배수성 아스팔트 포장에 비해 우수한 성능과 공용수명을 가진 공법을 적용함으로서 유지보수비용의 절감을 가능하게 하였다. 또한, 콘크리트포장의 단점인 소음발생을 최소화하기 위해 타이닝과 그루빙을 적용하였다. $\cdot$지하차도내 화재 등 유고시 신속한 대피가 가능하도록 피난 연락문 간격을 167m 간격으로 설치하고 비상탈출계단 6개소를 확보하였다. 또한 노약자 및 환자의 지하차도 외부로 대피를 돕기 위해 비상엘리베이터 3개소를 설치하는 등 사고발생 시 종합적으로 대처할 수 있는 시스템을 마련하여 적용하였다.

• Proceedings of the Korea Concrete Institute Conference
• /
• 2008.11a
• /
• pp.37-40
• /
• 2008

Recently, Construction Business, is changing very quickly, exceedingly needs to slim down the construction expensive by reducing material costs and the term of works. The term of formwork takes 25% of the term of works and costs 15% to 20% of the cost of construction. Hereupon, the purpose of this study is to investigate the Axial Strength of Centrifugall Formed Shell PC Columns that can reduce the term of formwork, the costs of material, the difficulty of throwing away the waste. Shell PC Column is loaded stirrups and manufactured at factory, so it has good points like construction's quality control and part's precision. However, it needs to be tested for checking bonded ability because it is set up at core and coverd with concrete. therefore this study is necessary three type of columns, which are a RC column, different type of two compressive strength core concrete columns and a Shell PC Column. By three columns, this study compare with and analysis three columns's bonded and Compressive Behavior abilities.

• Journal of the Korean GEO-environmental Society
• /
• v.8 no.3
• /
• pp.11-18
• /
• 2007

This paper studied the economical efficiency of ground source heat pump system under various conditions in apartments which have important effects on the housing market. And this study analysed the initial cost increase, saved managing cost and recovery time of initial cost. Analysis result showed as time of heating-cooling and water heating increases, the amount of saved managing cost increased much than the initial construction cost, so recovery time shortened. And as the net area of apartment increases, the recovery time increased. The study of the relation between the installation type and recovery time of initial construction cost showed when heat-cooling system adapted ground source heat and water heating system adapted waste heat, the initial construction cost was recovered most quickly. When Ground Source Heating system was used for the heating-cooling and water heating system, ground source heating system was used for the heating-cooling and waste heat used for water heating, and ground source heating system was used for the heating-cooling and LNG used for water heating, the construction cost increased 72,000, 66,900 and 62,300 won each per $m^2$ compared to the current system (package air-conditioner, heating and water heating using LNG).