• 문화기술의 융합
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• 제9권1호
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• pp.531-537
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• 2023

인테리어 공사는 설계단계에서 2D 도면을 바탕으로 예상되는 자재물량을 산출하고 예상비용을 산정, 적정한 소요예산을 산출, 합당한 공사 방안을 모색하게 된다. 그러므로 정확한 물량산출과 예산책정은 인테리어 공사의 수익성 여부를 판단하는 척도로서 매우 중요한 과정 중 하나이다. 이러한 과정이 대부분 2D 도면을 기본으로 하기 때문에 시간과 경력직이 투입되는 것이 현실이다. 경력직 인원이라고 하더라도 2D를 기반의 도면을 이용하여 면적산출을 하기 때문에 오류와 누락이 발생한다. 현재 인테리어 시장은 3D 모델링을 기본으로 기획에서 최종 설계까지 진행되고 있다. 그래서 이제는 3D 모델을 기반으로 한 물량산출이 오류와 누락을 줄일 수 있는 방법으로 대두되고 있다. 그래서 이 논문은 인테리어 분야에서 3D 모델링을 기반으로 한 물량산출의 기본 요소인 면적산출 추출에 대한 방법론을 제시하고자 한다.

• 한국건축시공학회지
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• 제13권5호
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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.

• 한국방재학회 논문집
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• 제4권4호
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• pp.21-26
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• 2004

우천시 합류식 하수도의 월류수(CSOs)에 의한 오염부하량을 감소하기 위한 대책으로 차집량의 결정은 매우 중요하다. 오염부하량 감소를 위한 대책으로 우수를 전량 차집하여 처리하는 것이 가장 바람직하겠으나, 시설의 규모와 기타 유지 관리면에서 합리적이지 않다. 본 연구에서는 배수구역의 유역형상, 면적, 강우시 차집량 등을 변화시키면서 이로 인해 변화하는 합류식 하수관거의 유랑과 수질 등을 분석하였으며, 계획차집량의 변동에 다른 CSOs의 영향을 파악함과 동시에 합류식과 분류식을 각각 비교해 봄으로서 하천에 방류되는 오염부하량의 정도를 비교해 보았다.

• KIEAE Journal
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• 제10권3호
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• pp.75-80
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• 2010

The goal of this study is to figure out the remodeling cycle at high-rise apartment housing and to analysis on quantity of $CO_2$ emission about remodeling cycle. The process of research is as follow; 1) Estimate the remodeling cycle through survey targeting residents at high-rise apartment building. 2) Simulate conditions on the high-rise apartment housing. 3) Calculate quantity of energy consumption and $CO_2$ emission 4) Derive elements that are on high level of environmental load evaluation. The main results of this study is as follow; 1) The cycle of finishing such as wallpaper is shorter than the cycle of building equipment such as elements in a toilet. 2) According to result of calculating $CO_2$ emission, fabric wallpaper and mortar are main factors that impact on the environment. The results is important to show reference points on quantitative measuring evaluation for the environmental-friendly extent.

• Journal of the Korean Wood Science and Technology
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• 제43권5호
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• pp.641-651
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• 2015

The aim of this study was to estimate the service life of alkaline copper quaternary (ACQ)-treated wood. The service life of preservative-treated wood was estimated by comparing a residual quantity of ACQ in wood with toxic threshold to fungi. Indoor and outdoor leaching tests were carried out in order to predict residual ACQ quantity within wood. As a result, the leaching ratio of ACQ from treated wood above ground via precipitation was 18.1% for 50 years. When the H4 treated wood, which is traditionally used in contact with the ground and fresh water, is used above-ground, the leaching ratio of ACQ for 50 years is 18.1% and the residual quantity of ACQ is $4.2kg/m^3$, which is higher than the toxic threshold of ACQ. Thus, the H4 treated wood used above-ground will be resistant to biodeterioration for at least 50 years.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2008년도 춘계학술발표대회 논문집
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• pp.285-290
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• 2008

Recently, the scale of the construction work has been increased due to the revitalization of the construction industries. therefore, the demolition work in downtown areas is increased too. Amelioration districts are deteriorating rapidly since it followed the policy which allowed a large number of constructions in a very short period of time. therefore, the quantity of construction wastes and the designated wastes such as asbestos are increased. This study was classifying and analyzing the constructions in amelioration districts to estimate quantity of the designated wastes and the unit of the designated wastes. According to the results of this research, the average annual designated wastes was increased up to 2.59% in comparison with 2,779,334 ton in 2000, there came out 3,151,653 ton of designated wastes in 2005. For the appropriate disposal of increasing designated wastes, it is necessary to study exact estimation of the quantity of wastes.

• 농업과학연구
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• 제40권3호
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• pp.243-252
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• 2013

This study was carried out to investigate safety evaluation of agricultural reservoirs due to raising the embankment. The seepage analysis and large-scale model test were performed to compare and analyze the pore water pressure(PWP), leakage quantity, settlement and piping phenomenon in the inclined core type and the vertical core type embankments. The PWP after raising the embankment showed smaller than before raising the embankment and the stability for piping after raising the embankment. The allowable seepage quantity and the allowable leakage for the steady state and transient conditions is within the range of safe management standard. After raising the embankment in the inclined core, there was no infiltration by leakage. For the vertical core, the PWP showed a large change by faster infiltration of pore water than in the inclined core. In a rapid drawdown, inclined core was remained stable but the vertical core showed a large change in PWP. Settlement after raising the embankment showed larger amounts of settlement than before raising the embankment. The leakage quantity before raising the embankment and the inclined core type showed no leakage. From the result, an instrument system that can accurately estimate a change of PWP shall be established for the rational maintenance and stabilization of raising the embankment for agricultural reservoirs.

• 한국건설관리학회논문집
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• 제24권5호
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• pp.83-94
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• 2023

In order to devise a rebar usage optimization algorithm, it is necessary to calculate the exact rebar length and revise the arrangement of rebars into special lengths. However, the process of rearranging numerous rebars and manually calculating their quantities is time-consuming and requires significant human resources. To address this challenge, it is necessary to develop an algorithm that can automatically estimate the length of rebars and calculate their quantities. This study aims to create an automatic estimation algorithm that improves work efficiency while ensuring accurate and reliable calculations of rebar quantities. The algorithm considers various factors such as concrete cover, hook length, development length, and lapping length, mandated by the building codes, to calculate the quantity of rebars for wall structures. The effectiveness of the proposed method is validated by comparing the rebar quantities generated by the algorithm with manually calculated quantities, resulting in a difference rate of 1.14% for the hook case and 1.37% for the U-bar case. The implementation of this method enables fast and precise estimation of rebar quantities, adhering to relevant regulatory codes.

• 국제학술발표논문집
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• The 4th International Conference on Construction Engineering and Project Management Organized by the University of New South Wales
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• pp.176-181
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• 2011

A role of cost modeler is that of facilitating design process by the systematic application of cost factors so as to maintain sensible and economic relationships between cost, quantity, utility and appearance. These relationships help to achieve the client's requirements within an agreed budget. The purpose of this study is to develop a parametric cost estimating model for the early design stage by using the multi-dimensional system of OLAP (On-line Analytical Processing) based on the case of quantity data related to architectural design features. The parametric cost estimating models have been adopted to support decision making in the early design stage. These models typically use a similar instance or a pattern of historical case. In order to effectively use this type of data model, it is required to set data classification and prediction methods. One of the methods is to find the similar class in line with attribute selection measure in the multi-dimensional data model. Therefore, this research is to analyze the relevance attribute influenced by architectural design features with the subject of case-based quantity data used for the parametric cost estimating model. The relevance attributes can be analyzed by Analytical Characterization. It helps determine what attributes to be included in the OLAP multi-dimension.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2000년도 하계학술대회 논문집 A
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• pp.242-244
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• 2000

This paper presents a method for real-time estimation of TCSC quantity in order to enhance the power system transient stability energy margin using fuzzy neural network in multi-machine system. This paper has two parts, the first part is to estimate the energy margin. To set critical energy, we use the potential energy boundary surface(PEBS) method which one of the transient energy function(TEF) method. And the second is to determine the TCSC quantify and the line to be injected. In order to make training data in this step, we use genetic algorithm. The proposed method is applied to 6-bus, 7-line, 4-machine model system to show its effectiveness.