• Korean Journal of Construction Engineering and Management
• /
• v.2 no.3 s.7
• /
• pp.101-109
• /
• 2001

Application of system form is very effective to continuous horizontal or vertical walls of the apartment housing. Though the system forms that are used in the construction field have the advantage of concrete quality improvement and increasing number of usages, there are some problems in reaching early planning scheduling goal due to schedule delay and low productivity. This study is initiated to solve the problem and suggest some improvements searching for reasons that diminish the productivity. A case study was done in apartment construction field where system form was used and the productivity is analyzed by work sampling. Finally, productivity improvements for assembly of the form, internal form and external form are suggested, respectively.

• Korean Journal of Construction Engineering and Management
• /
• v.18 no.6
• /
• pp.98-108
• /
• 2017

Recently, the development of middle and high-rise building technology using modular construction method has emphasized the importance of site construction error management. The modular construction method is very limited to adjust the construction error in the field because of the factory production characteristics. Therefore, in order to prevent the construction error in advance, a management plan reflecting the characteristics of the modular construction method is required, and it is important to make the decision of the construction participant at each stage. This study analyzed the factor of construction error of modular construction and suggested a decision support model for construction error management based on construction process. The result of this study is expected to be a guideline for the modular construction participant to derive the construction error management plan.

• Journal of the Korea Institute of Building Construction
• /
• v.16 no.2
• /
• pp.151-159
• /
• 2016

Tower crane (T/C) is one of the major equipment that is highly demanded in construction projects. Especially, most high-rise building projects require T/C to perform lifting and hoisting activities of materials. Therefore, lifting plan of T/C needs to reduce construction duration and cost. However, most lifting plan of the T/C in construction sites has still performed depending on experience and intuition of the site manager without systematic process of rational work. Dependency structure matrix (DSM) is useful tool in planning the activity sequences and managing information exchanges unlike other existing tools. To improve lifting plan of T/C efficiently, this study presents a framework for the scheduling T/C using DSM through the case study in real world construction site. The results of case study showed that the scheduling T/C using DSM is useful to optimize the T/C lifting plan in terms of easiness, specially in the typical floor cycle lifting planning.

• Journal of the Korea institute for structural maintenance and inspection
• /
• v.14 no.5
• /
• pp.169-178
• /
• 2010

Generally speaking, the demolition works is the subsequent construction activity which has been done after building life-span of twenty two years or so. However, it was not prepared suitable systems and laws and regulations as long-term solutions. In this study, it was suggested the improvement guideline of safety management-related laws in domestic demolition works. The three improvement of laws was suggested as follows. ${\bullet}$ First, it was suggested proposals for demolition works standards in safety management plan of management law for construction activity. ${\bullet}$ Secondly, it was provided improvements for standard safety work guide of demolition works of industrial safety and health law. ${\bullet}$ Third, it was proposed integration method of redundancy in safety management plan and risk assessment regulations.

• Journal of the Korea Institute of Building Construction
• /
• v.17 no.4
• /
• pp.349-360
• /
• 2017

In concrete construction work, formwork is an important process that accounts for 10% of the total construction cost. Recent buildings are becoming bigger and higher. In order to maximize the efficiency and safety of this formwork, the system of formworking has been systematized. However, the human accidents and the noise complaints arise from dismantling processes frequently occur. In order to solve these problems, most of them are dependent on foreign technology, but they do not take into consideration the conditions of domestic construction site. In this study, we developed a table type multi-drop system form for a slab and beam which can improve the process, safety and reduction of disassembly noise, and evaluated the physical properties of the main members which are used in the system. The results of this study show that there is sufficient strength to be used as a slab and a laying material for both a yoke beam and a supporting post. The noise level is improved compared to existing method.

• Proceedings of the Korean Institute Of Construction Engineering and Management
• /
• autumn
• /
• pp.491-494
• /
• 2003

Curtain wall (for the outside wall) must be designed and constructed to resist weather condition of nature like rain. wind and surrounding environment. So, Now days, Mock-up test of curtain wall's total capability is generally used for skycraft building. But, Mock-up test specification in korea is so weak that there are lots of disputation. Also, lacking of clearness in specification causes many trouble in adaptation. Therefore, I would like to consider the problem of Mock-up test specification by inspecting and comparing with other country's works. and I will mention the way of approvement in our specification.

• Journal of the Korea Safety Management & Science
• /
• v.17 no.1
• /
• pp.21-32
• /
• 2015

High rising of the buildings offers a number of risk factors than ever before with regard to fire prevention. Especially in the construction site of high-rise buildings, people waste golden-time during the evacuation because temporary fire fighting facilities are not installed and transferred to a large fire because of fire suppression failure. In this study, the researcher derives the problems of fire protection in high-rise buildings construction sites and proposed the measures in such the legal aspects as fire building construction code and etc. There are the legal improvements such as orders of construction suspension in the problems of fire safety, appointing fire safety manager, temporary fire protection installation standards, enhancing penalty provisions regarding the use of fire, operating self fire brigade, confirming on-site after completing fire-protection facalities, establishment or strengthening special fire-protection investigations.

• Journal of KSNVE
• /
• v.3 no.4
• /
• pp.293-299
• /
• 1993

최근 토목, 건축재료 및 시공기술의 발전과 더불어 컴퓨터를 이용한 해석 기법의 개발, 경제규모의 확대, 주변환경과의 조화 및 미적감가의 끊임없는 추구는 구조물의 장대화, 연성화, 다양화는 물론 구조감쇠율의 감소 등을 가져옴으로서 바람에 의한 동적 거동의 영향이 증대되어 이에 대한 검토의 중요성이 크게 부각되기 시작하였다. 특히, 최근들어 활발히 계획, 공사중인 여러 현수교, 사장교 구조물 중 시공단계로서의 독립 tower, 발전소의 장대 굴뚝, 고층건물, 전망 tower, 공항 관제 탑 등이 좋은 예이다. 따라서 이들 구조물의 설계과정에서 제안된 여러형태의 진동 제어 방법중 수동 감쇠장치에 대하여 소개하기로 한다. 감쇠장치는 직접 외부에 부착 하는 강제 감쇠장치와 소량의 질량, 스프링과 감쇠장치들을 조합하여 부착하는 수동 감쇠장치가 있다. 수동감쇠장치는 소규모로서 유지보수가 거의 필요 없으며 외관의 변화가 거의 없고 저렴하다는 장점이 있다. 여러종류의 수동감쇠장치, 즉 TMD, IMD 그리고 TSD에 대한 개략적인 이론과 그 사용예에 대하여 설명하였다. 실험적 검증 및 실측결과 각 장치가 바람에 의해 야기되는 진동현상을 억제하는데 매우 유효한 것으로 판정되었고 또한 크기가 소규모일 뿐 아니라 유지보수가 거의 없으며 비용도 저렴하여 국내 건설 또는 건설예정인 유사구조물에도 많은 적용이 예상된다.

• Proceedings of the Korean Society of Disaster Information Conference
• /
• 2016.11a
• /
• pp.283-286
• /
• 2016

국내에 다수의 공동주택이 건설되고 있거나 공사중에 있으며 그 수요 또한 향후 지속적으로 증가할 예정이다. 그러나 이러한 증가추세의 공동주택 중 대피공간 규정이 신설된 1992년 이전에 시공된 건축물은 현재에도 대피공간 및 피난시설이 부재한 상황이다. 또한, 현재 계획 및 시공, 준공된 준초고층의 공동주택에 설치되어 있는 대피공간 및 이에 준하는 시설은 사생활 침해 및 타 용도 공간 활용 등으로 기능이 상실되어 있다. 이에 따라 공동주택 피난 및 대피공간에 대한 실효성을 검토할 필요가 있고 타 시 도의 선진사례를 분석하여 정책적 제안을 마련할 필요가 있다. 본 연구는 공동주택 피난시설의 효율성 강화를 위해 광주광역시의 공동주택 관련 현황 및 사례 조사와 관련 법규 분석을 통해 피난시설 및 대피공간의 문제점을 검토하고 효율성이 높은 대피시설 등을 활용할 수 있는 정책적 제언 및 인센티브 제도, 가이드라인 등 정책 대안을 제시하였다.

• Land and Housing Review
• /
• v.4 no.3
• /
• pp.295-301
• /
• 2013

In this study, cases of domestic tall residential buildings were investigated for the structural types, numbers of stories, total heights, type of lateral load resisting systems, and zoning of concrete strength. Based on these investigation data, the structural planning pattern of tall residential building was analyzed. SRC structure is main structural types of tall residential building at the initial stage of domestic tall residential building, but RC structure is substituted for main structural types since 2005. Retaining wall system is positioned at the core part of structural plan as a lateral load resisting system. Concrete strength zoning of vertical members like columns are divided by vertical heights of lower parts, middle parts, and upper parts. Basic data of structural planning of 40stories and 60 stories residential buildings was proposed based on case investigation.