• Journal of the Korea Institute of Building Construction
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• v.14 no.5
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• pp.407-413
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• 2014

Appropriate selection of lifting equipments for a high-rise building construction project is one of the important factors to the project's success. Proper position of a tower crane on a construction site is so important to be determined by an expert or an experienced construction manager who draws working range of a tower crane and moves it over 2D(dimensional) site layout plan. 3D CAD, BIM, and virtual reality are is used for building design and construction, but it is not usual to use them for temporary facility planning or selection of a tower crane. This study proposes a suitable method to use augmented reality to select proper position of tower cranes. An augmented reality prototype is implemented by Vuforia and Unity 3D on a smart device to verify the practicability of the proposed method. The prototype application installed on a smart device shows several tower cranes on different markers in a real architectural drawing to locate the proper tower crane.

• Journal of the Korea Institute of Building Construction
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• v.13 no.5
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• pp.506-512
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• 2013

Since the amendment of the law on the private sector investment in social infrastructure in January of 2005, the government has been actively promoting Build-Transfer-Lease (BTL) projects. Notably, most new educational facilities have been built as BTL projects. For these facilities, the unit cost per unit area has been applied to predict construction costs. However, since construction costs are mostly managed after the detailed design phase, the costs can be estimated incorrectly. For this reason, cost management is needed in the planning phase, with a sound approximate estimate to prevent the wasteful use of funds. To address this shortcoming, this study aims to develop a quantity prediction model for education facilities using regression analysis in the planning phase. The developed model is focused on the required quantities of reinforced concrete and bricks. In order to achieve the objective, the data of 44 educational facility projects collected from Gyeonggi-do was used in the regression model. This study can be utilized by major stakeholders to accurately predict construction costs by estimating the appropriate quantities of reinforced concrete and bricks in the planning design phase.

• Human Ecology Research
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• v.54 no.1
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• pp.83-95
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• 2016

This study explored the processes of parental divorce and adaptation in single-parent families as well as examined how the experience of living in family welfare facilities influences the adaptation process of such families. The research question to achieve the study objective was, "What is the adaption process for a singlefather family, and what influence does living in a single-father family welfare facility have on that process?" Data collection was conducted between June 2013 and April 2014 that included an in-depth interview process and continuous participatory observations on 14 children residing in the facility. The study results were as follows. The theme in a two-parent family period was 'changes in reduction of family: serious conflicts between parents.' Children directly witnessed intense conflicts between parents and experienced anxiety from situations that involved verbal and physical violence during the two-parent family period. The experience of children prior to entering the facility was represented by "loss and confusion experienced." The theme for children of singlefather family in entering a facility was "selecting a realistic alternative." Children's daily activities consisted of being with friends of a similar age, which allowed them to play and support each other in building social skills. The facility departure theme for the children was "hope for a new life."

• Journal of the Korean Institute of Educational Facilities
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• v.24 no.5
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• pp.11-18
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• 2017

An university dorm has significant implications in terms of providing residential, living, and learning spaces. With its supportive function, a dorm enables each university to provide higher level of education. The operation & maintenance(O&M) condition of the dorm has a decisive effect on the students' satisfaction. Accordingly, high levels of O&M services should be performed for students. However, Korean dorms are being operated and maintained by their own O&M guidelines without the consideration of spatial characteristics of dorm facilities and the comprehensive and systematic understanding on effective O&M processes. Given the fact that dorm facility can be a crucial factor in determining the entire quality of university and its O&M condition is closely related to the satisfaction of students, it is imperative that we need to pay more attention to the O&M condition and services. Therefore, the main objective of this research is to improve dorm students' satisfaction levels by applying different O&M method, preventive maintenance rather than reactive maintenance which has been performed so far. In ordering for doing it, 'Facility Management(FM) Standard' from KS, 'Facility Performance Indicator(FPI)' from APPA: Leadership in educational facilities and 'Building O&M Inspection Manual' from Korean Ministry of Land, Infrastructure and Transport were analyzed to come up with 15 significant O&M factors. After extracting O&M factors, the survey was conducted to determine importance rate and performance rate of each O&M factor. Using the Important-Performance Analysis(IPA), the priority of 15 O&M factors was established. The result of this research will be helpful for the efficient dorm facility O&M services and for facility managers to appropriately allocate the limited resources and human power.

• Journal of the Architectural Institute of Korea Planning & Design
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• v.34 no.11
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• pp.105-112
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• 2018

Global environmental problems are growing, and the importance of buildings with high energy consumption has been emphasized. In Korea, the Ministry of Land, Transport and Maritime Affairs has been promoting the mandatory zero energy building since 2020, and guidelines related to the zero energy building have been developed. In addition, based on the "Energy-saving Design Criteria for Buildings" of the "Green Building Promotion Act" in Korea, the standards for energy-saving design are specified and the energy saving plan is written. Besides, the 'Energy-saving construction standards for eco-friendly houses' also specify insulation, machinery, equipment, and sunshade. Also, there is little consideration about the cost such as construction cost and material cost which should be considered important in the construction stage. Therefore, this study aims at analysis of building type and energy performance versus materials for energy saving building design considering energy performance in planning aspect of initial design stage. In this study, because the variables can not be neglected in this study, it is selected as the lecture facility of the 'K' university campus building which can consider the remaining factors except the passive design element as the control variable, Energy performance analysis.

• Korean Journal of Construction Engineering and Management
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• v.25 no.5
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• pp.63-72
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• 2024

This study aimed to address the issue that about 92% of domestic BIM orders only focus on the design/drafting stage and the absence of government BIM implementation guidelines for maintainers. Despite the ability of BIM to reduce maintenance LCC by around 20%, such guidelines remain insufficient. In this study, we examined the COBie requirements by comparing 45 maintenance information and Autodesk Revit (2022) inputs with COBie data. As a consequence, the necessary elements correlated with 54 pieces of data across eight spreadsheets (Contact, Space, Type, Component, System, Spare, Job, Document) and there were 13 gaps in information between the construction and maintenance. These were subsequently integrated into the ontology and their associations were evaluated with the Reasoner tool. From the results inferred, it is apparent that the COBie requirements have a correlation with one another. It is essential to carry out a survey among practitioners and a pilot operation to assess performance in the future. This research is anticipated to furnish pivotal data for the implementation of an effective property upkeep system.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.21 no.4
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• pp.201-208
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• 2011

Objectives: According to the compliance of the asbestos-related regulation, every building has to be inspected for asbestos presence before its abatement work. This study was performed for identifying the types and contents of asbestos in building bulk samples. Materials and Methods: Bulk samples were collected during the asbestos inspection in 2010. We grouped the bulk samples into the regulated asbestos containing materials(RACM), presumed asbestos containing materials(PACM), and construction products. Additionally, the types of asbestos in all bulk samples were identified by polarization microscopy(PLM). Results: The RACMs were from building, house, pipe and facility. The RACMs were found mainly building (72.1%) and house (93.7%). The contents of chrysotile in building, house and facility were 66.9% (1-90%), 89.7% (2-90%) and 11.0% (2-90%), respectively. PACMs were surfacing material, thermal system insulation (TSI), and miscellaneous material. The miscellaneous materials that showed a high detection rate (79.2%) were ceiling, roofing and wall materials. Among them, the roofing materials had high chrysotile content(9.7%, 2-21%), followed by wall (8.7%, 2-21%) and ceiling (3.4%, 1-17%). In the construction products, asbestos was found mainly in slate (92.6%, 2-21%), including chrysotile. The slate had high asbestos content (9.7%, 2-21%), followed by cement flat board (8.7%, 2-19%) and textile (3.4%, 1-17%) Conclusions: Utilizing these results, it would be contributed to construct a useful ACM database and prevent from asbestos exposure to workers in the asbestos abatement and maintenance works.

• Journal of the Korean Institute of Gas
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• v.20 no.3
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• pp.38-45
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• 2016

In this study, we found that the release and dispersion of ammonia can create hazardous atmospheres using FLACS software. In General, ventilation or gas detector installations are recommended as preventive measures to control explosion incidents. However, the ventilation installations cannot be applicable to the refrigeration facility that uses ammonia as refrigerating medium, because the freezing room should be sealed. From the accident investigation of the explosion case, we suggested that all electronic devices were needed to be switched by explosion proof devices, and communication facility was also needed to be installed to announce to all employees within a building in case alert condition like ammonia releases occurred.

• Nuclear Engineering and Technology
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• v.48 no.3
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• pp.733-743
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• 2016

The purpose of this study is to present a rational depreciation method for a pyroprocess cost calculation. Toward this end, the so-called advanced decelerated depreciation method (ADDM) was developed that complements the limitations of the existing depreciation methods such as the straight-line method and fixed percentage of declining-balance method. ADDM was used to show the trend of the direct material cost and direct labor cost compared to the straight-line or fixed percentage of the declining-balance methods that are often used today. As a result, it was demonstrated that the depreciation cost of the ADDM, which assumed a pyroprocess facility's life period to be 40 years with a deceleration rate of 5%, takes up 4.14% and 27.74% of the pyroprocess unit cost ($781/kg heavy metal) in the $1^{st}$ and final years, respectively. In other words, it was found that the ADDM can cost the pyroprocess facility's capital investment rationally every year. Finally, ADDM's validity was verified by confirming that the sum of the depreciation cost by year, and the sum of the purchasing cost of the building and equipment, are the same.

• Journal of Navigation and Port Research
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• v.44 no.1
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• pp.20-31
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• 2020

The purpose of this study was to provide planning criteria for the thalassotherapy facility. Among the various contents of the planning criteria, the crucial parts of the thalassotherapy facility planning are the location, facility environment, and room space. To do this, we first examined the characteristics of the thalassotherapy facility and inquired about the thalassotherapy resources and treatments that are the basis of the thalassotherapy facility planning. And then, the overseas qualification criteria related to thalassotherapy facility were analyzed. Based on the above research results, the criteria for the thalassotherapy facility planning on location, facility environment, and spaces of rooms are presented. The location is within 1km of the coastline, where there is no pollutant emission facility, and the climate conditions are maintained more than 80% throughout the year below 'caution' level of the thermal sensation index and sensory temperature. The water quality of the facility environment meets the stricter criteria among the domestic standards or ISO 17680 standards, and the air quality is 60% of the atmospheric environment standard of the 「Framework Act on Environmental Policy」 and SO₂, NO₂, O₃ and PM10 concentration shall ensure that the annual number of exceeding standards meets the EU standard, and noise is less than 50dB per daytime, 40dB per night. Therapy spaces have to meet the standards of the 「Building Act」, the working standards of architectural planning and international standards according to their function and use.