• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2016년도 춘계 학술논문 발표대회
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• pp.181-182
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• 2016

We developed eco-friendly lightweight concrete in order to apply eco-friendly lightweight concrete into structural wall or slab of shallow depth urban railway system. However, since lightweight aggregate has different structural feature of porous and it has been overvalued at current KS standard when applied, we did compare the characteristics of freezing and thawing of normal weight aggregate concrete by comparative test method(KS, ASTM). According to test method, there was a big difference of dynamic elastic modulus in lightweight concrete rather than in normal weight aggregate concrete. The big absorption factor in lightweight aggregate is main reason for that. For more detail, in KS law in which only 14 days water curing is carried out, the big amount of moisture in lightweight aggregate is frozen and high heaving pressure occurs and finally that lead to destruction of lightweight concrete. Therefore, it is considered that in case of lightweight concrete, resistibility against freezing and thawing has been undervalued in domestic KS law compared to ASTM law, which is overseas standard. So, a variety of examination about testing criteria and rule would be necessary for exact assessment of lightweight concrete.

• 한국철도학회논문집
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• 제3권4호
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• pp.177-184
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• 2000

In this paper, a HVAC controller which has a bilinear system is designed to control the air temperature in building room and a saving of energy on the HVAC system. For modeling of the HVAC bilinear system, AHU(Air Handling Unit) is modeled on the control of inside-outside air flow using three dampers in a duct. A heat exchanger and the single room are also modeled by the energy conservation law. Under the modeling of the HVAC bilinear system, the control's law of the bilinear HVAC system is derived by Lyapunov's non-linear theory and Deress's the linear feedback laws for bilinear system. In this paper it was proved that the controller of the HVAC bilinear system is able to control the air temperature with a disturbance in order to get a target of temperature in the building room by the computer simulation when the control inputs regulate the air flow rate and a capacity of the heat exchanger.

• 한국안전학회지
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• 제32권1호
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• pp.53-59
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• 2017

Safety inspection activities of the facilities including the electricity, gas, building, and firefighting, etc. are individual checks by the separate law of each government department, comprehensive inspections for the specific managed facilities or during a weak season, and national safety overall diagnostics for the disaster prevention. Thus, types of the inspections are various and they have been carried out repeatedly as well as duplicately. That can make the people or institutes to take such inspections feel great burdens. Therefore, the investigation on the current situation of the individual inspection by the separate law for the electricity, gas, building, and firefighting, etc. as well as of various others by the government needs to be carried out and according to the results the repetitive and duplicated inspections should be reduced and converged to one comprehensive one. In this regard, we proposed solutions to improve the government safety inspection system, function, and role.

• 한국건축시공학회지
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• 제13권2호
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• pp.102-111
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• 2013

During the administration of a construction project, various types of participants are engaged in the project. From the design phase to the maintenance phase, these participants may confront many risks. To avoid these risks, participants should utilize an insurance company or a bond company. The types of risks and liability that a construction manager may face are listed in the construction law or contract. But there are some arguments related to risk transferring and the content of risks. For this reason, construction managers must carefully consider any possible risks in the contract and the construction law. Therefore, for construction managers to deal with risks appropriately, the introduction of a legal requirement to carry professional liability insurance, a defined compensation range for damages, a method of guarantee in the event of defects, a defined compensation claim period for damage, and a method of damage claim were suggested in this study.

• 한국실내디자인학회논문집
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• 제15권5호
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• pp.202-208
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• 2006

The purpose of this study is to suggest architectural planning guideline for the improvement of the evacuation environment in a ward. To suggest of guideline, the problem of irrational domestic criteria is searched according to compare National fire code (NFPA101, Life safety code) with Korea building law. This study includes stairs, corridors and exit door etc. but excludes fire facilities. To verify effectiveness of suggested guideline, egress simulation is run that based on databases according to literature survey. The results of this study could be summarized as follow: Suggested guidelines are subdivision(fire partition), evacuation by elevator, secure useful waiting space of elevator hall and smokeproof enclosures, the corridor is divided by fire or smoke barriers corridor from hazardous room, only wheeled items are arranged in corridors of a ward story. The result of computer simulation for suggested guidelines verify that egress time can be decreased 20% or above.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2002년도 학술대회논문집
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• pp.147-150
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• 2002

Domestic electrical construction inspection system was introduced into building site in 1963 by registered architects' law, meanwhile, inspector appointed by ministry of owners lake charge of Government managing building site. Afterwards several systems has been adopted to heal some problems each of them has revealed. These times Government granted authority for inspection on surveillancer, furthermore, formulate a supervising system which articulate the responsibilities of supervision and put it in effect as of 1st, January, 1994. This supervision system gets rid of factors causing faulty work to a considerable extent. However, as it is still in early stage, the system has various problems to overcome, For example, actual state of handling modifications of design in accordance with supervision system in field shows a difference between process provided by law and field process. Thus this study inquire and analyze actual condition of supervision system, at the same time, problems occuring in modifications of design under supervision, and then propose a way to improve it

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2009년도 하계학술발표대회 논문집
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• pp.1112-1118
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• 2009

The aim of this paper is improvement plan of mechanical field construct production system in Korea construction industry market. Recently Korea's construction production system is changing rapidly. While change, mechanical system construction field must prepare proper system for construction production system and later mechanical construction work will give order directly. Through this study the author will show the improved mechanical field construct production system and it can useful future construction industry production system in Korea.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2017년도 춘계 학술논문 발표대회
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• pp.31-32
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• 2017

The Korea is conducted performance based on design according to fire fighting law in 2009, but it came out problems related to PBD consistently. Especially, there is no specific guideline or code related to evacuation safety verification. so it came out different results according to designer. This study is looking for each country criteria and suggest the basis data for Manual composition through comparison.

• 설비공학논문집
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• 제23권6호
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• pp.470-476
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• 2011

The aim of this paper is improvement plan of mechanical field construct production system in Korea construction industry market. Recently Korea's construction production system is changing rapidly. While change, mechanical system construction field must prepare proper system for construction production system and later mechanical construction work will give order directly. Through this study the author will show the improved mechanical field construct production system and it can useful future construction industry production system in Korea.

• 대한건축학회논문집:계획계
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• 제33권12호
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• pp.3-11
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• 2017

The non-mandatory guidance and illogical ordinance of local government generate complicated and vague regulations and procedures. These cause inconvenience in building administration, and give rise to unnecessary social and administrative expenses. The purpose of this study is to suggest the improvement of building administration by local government from an institutional point of view through the literature review and the specialist survey focusing on the problems arising from the building ordinances and non-mandatory guidance. The results of this study are as follows; In the first place, the connection between law and ordinance should be improved in a systematic, definitude manner and high-degree of completion. Second, the monitoring management system should be arranged in order to excavate and improve the non-mandatory guidance. Third, the effort should go into improving ability and disposition of building official. Fourth, it is necessary to materialize and clarify the regulatory contents and adjust them to fit the legal system. Lastly, it is important to reinforce incentives and procedures of verification in order to manage building ordinances of legal government's own free will. In order to improve of building administration by local government, it is necessary to make the structure of sustainable improvement and discuss not only institutional aspect but also elements of building administration in later study.