• Title/Summary/Keyword: Building Condition

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A Field Study on the Preference in the Construction Management (공사관리업무에 대한 선호도 조사 연구)

  • 이두진;최민권;손재진
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2001.11a
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    • pp.124-129
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    • 2001
  • With the social demands for tall building, the level of techniques for construction become high and there are various building materials. Also, the construction system become very complicated with the increase of worker. In spite of above facts, the method of construction management depends on the experimental capacity of a construction manager, and there are many unreasonable elements. These elements prevent well-going in construction process. To solve this problem, it is necessary to make a new system of construction management which is adequate for the condition of company and the contents of construction. In this study, the characteristic of production system and the present condition of construction management were investigated with the help of survey. Thus, the new method of construction management which can clear the previous problems was proposed.

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Analysis of Boundary Conditions for Cost Breakdown Structure in the Construction and Maintenance phase (시공단계와 유지관리단계 비용분류체계의 경계조건 분석)

  • Jeong, Jae-Hyuk;Shin, Han-Woo;Kim, Tae-Hui
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2012.05a
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    • pp.21-23
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    • 2012
  • The process of building project for planning, designing, construction, maintenance, and waste disposal are related with each other. However, we have a difficulty for estimating building's LCC due not to be flexible each other. Therefore, we analyzed the boundary condition between the process of construction and maintenance, and analyzed the factor of segment. We also suggested the Link System for flexible relation.

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A Field Study on the Preference in the Construction Management - Focused after construction Stage - (현장관리 업무체계의 실태조사 연구 - 준공 후 업무를 중심으로 -)

  • Lee, Doo-Jin
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2003.11a
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    • pp.85-89
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    • 2003
  • With the social demands for tall building, the level of techniques for construction become high and there are various building materials. Also, the construction system become very complicated with the increase of worker. In spite of above facts, the method of construction management depends on the experimental capacity of a construction manager, and there are many unreasonable elements. These elements prevent well-going in construction process. To solve this problem, it is necessary to make a new system of construction management which is adequate for the condition of company and the contents of construction. In this study, the characteristic of production system and the present condition of construction management were investigated with the help of survey. Thus, the new method of construction management which can clear the previous problems was proposed.

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A Field Study on the Preference in the Construction Management - Focused after construction Stage - (현장관리 업무체계의 실태조사 연구 - 준공 후 업무를 중심으로 -)

  • 이두진
    • Proceedings of the Korean Institute of Building Construction Conference
    • /
    • 2003.05a
    • /
    • pp.85-89
    • /
    • 2003
  • With the social demands for tall building, the level of techniques for construction become high and there are various building materials. Also, the construction system become very complicated with the increase of worker. In spite of above facts, the method of construction management depends on the experimental capacity of a construction manager, and there are many unreasonable elements. These elements prevent well-going in construction process. To solve this problem, it is necessary to make a new system of construction management which is adequate for the condition of company and the contents of construction. In this study, the characteristic of production system and the present condition of construction management were investigated with the help of survey. Thus, the new method of construction management which can clear the previous problems was proposed.

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The Properties of Optimal Passive Tuned Mass Dampers (최적 수동 동조질량감쇠기의 특성)

  • 노필성;강병두;김재웅
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 1996.04a
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    • pp.165-172
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    • 1996
  • Recently, the response of a high-rise building to external dynamic force created by wind and earthquake has received much attention. This response is dependent on wind intensity, surrounding environment, building size, shape, mass, stiffness and amount of energy dissipation available in the system. The study has been done on these parameters. Attempts have been made to increase the damping in building system and thereby reduce structural response. These attempts have centered on adding an energy-dissipative system(passive tuned mass damper; passive TMD) to the building system and increasing the overall effective damping. In this paper the optimum condition of passive TMD will be derived with respect to random excitation and the properties of the optimum condition will have been studied.

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Actual Condition of the Aircraft Noise in the Building Site Development Arranged District (택지개발예정지구 항공기 소음 실태조사 연구)

  • Kim, Heung-Sik;Park, Young-Min;Joo, Si-Woong
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2004.11a
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    • pp.1040-1043
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    • 2004
  • The purpose of this study is to present a fundamental data for evaluating aircraft noise of building site development. By the field experiments and an predicted equal noise level contour using the INM program, actual condition in the building site development arranged district was investigated. In order to get the results, Analysis of factors effected on noise level, sound level on the rate of increase to aircraft demand and difference on the aircraft noise levels according to floor level in apartment house was carried out.

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Safety diagnosis process for deteriorated buildings using a 3D scan-based reverse engineering model

  • Jae-Min Lee;Seungho Kim;Sangyong Kim
    • Smart Structures and Systems
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    • v.31 no.1
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    • pp.79-88
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    • 2023
  • As the number of deteriorated buildings increases, the importance of safety diagnosis, maintenance, and the repair of buildings also increases. Traditionally, building condition assessments are performed by one person or one company and various inspections are needed. This entails a subjective judgment by the inspector, resulting in different assessment results, poor objectivity and a lack of reliability. Therefore, this study proposed a method to bring about accurate grading results of building conditions. The limitations of visual inspection and condition assessment processes previously conducted were identified by reviewing existing studies. Building defect data was collected using the reverse-engineered three-dimensional (3D) model. The accuracy of the results was verified by comparing them with the actual evaluation results. The results show a 50% time-saving to the same area with an accuracy of approximately 90%. Consequently, defect data with high objectivity and reliability were acquired by measuring the length, area, and width. In addition, the proposed method can improve the efficiency of the building diagnosis process.

Suggestion of the Prediction Model for Material Properties and Creep of 60~80MPa Grade High Strength Concrete (설계기준강도 60~80MPa급 고강도콘크리트의 재료 특성 및 크리프 예측모델식 제안)

  • Moon, Hyung-Jae;Koo, Kyung-Mo;Kim, Hong-Seop;Seok, Won-Kyun;Lee, Byeong-Goo;Kim, Gyu-Yong
    • Journal of the Korea Institute of Building Construction
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    • v.18 no.6
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    • pp.517-525
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    • 2018
  • The construction of super tall building which structure is RC and must be certainly considered on column shortening estimation and construction reflected concrete creep has been increased. Regarding the Fck 60~80MPa grade high strength concrete applied in the domestic super tall building project, the mechanical properties and creep deflection according to curing conditions(Drying creep/Basic creep) were reviewed in this research. Results of compressive strength and elastic modulus under sealed curing condition were 5% higher than unsealed condition and difference of results according to the curing condition was increased over time. Autogenous and drying shrinkage tendency showed adversely in the case of high strength concrete. Additionally, creep modulus under unseal curing condition was evaluated 2~3 times higher than sealed condition. Modified model of ACI-209 based on test result was applied to estimate long period shortening of vertical members(such as Core Wall/Mega Column) exactly, it is designed to modify and suggest the optimal creep model based on various data accumulated during construction, in the future.

A Study on the Deterioration Patterns of Building Components in the Rental Apartment Housing (임대공동주택 구성재의 열화도 패턴에 관한 연구)

  • Lee Kang-Hee
    • Journal of the Korean housing association
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    • v.17 no.4
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    • pp.65-72
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    • 2006
  • Most of buildings have been deteriorated with time-elapse by reflection of the building location, material, environmental circumstances and so on. The performance would go down and be demolished if anything could not be done after constructed. The maintenance should be required to preserve a decent living condition or improve a inferior condition by various plans and practices. The maintenance plan needs various data such as a repair scope, a repair time, a forecasted cost, a plan of management and so forth. Among the above required data for planning the maintenance, the deterioration characteristics of the building components would be first analyzed. The deterioration pattern would be a key role to affect and make a maintenance plan. In this paper, it aimed at classifying the deterioration patterns of building components. A deterioration pattern would be analyzed between the cumulative repair cost and time-elapse and modeled with these relations. A deterioration patterns are classified into 4 types-a accelerated type, a straight type, a temporary type and a slowly type. As a result of this research, a accelerated type includes window, window frame, general paintings, general water proofing in building components. A straight type includes the lacquer paintings, furnishings in building components and water supply pipe, boiler, sanitaries in mechanical facilities and lighting in electric facilities. Based on these research results, further study should be conducted to include any other components and an estimating model.

A Study on Field Examinations and Interviews for Yeonpyeongdo Temporary Housing (연평도 임시주거시설 실태 및 면담조사 연구)

  • Moon, Jung-In;Song, Young-Hak;Wang, Woo-Chul;Lim, Seok-Ho
    • Journal of the Korean housing association
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    • v.23 no.3
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    • pp.21-28
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    • 2012
  • The artillery fire accident in Yeonpyeong Island showed that the man-made disaster caused by the domestic political conditions as well as the conventional natural disaster can occur in Korea. Especially, it can be known that the whole community can be abandoned despite of a small scale of practical damage in residential district and the resulting large scale of refugees can be produced in the nation. This study investigated the real condition of temporary housing which has been provided at the Island. Firstly, in the theoretical review based on the literature study, the content on the background of temporary housing, the providing procedure of its concept, the status of supply, etc. has been considered. And it researched the current condition of the entire temporary housing through the questionnaire and interviews targeting the residents in the Island. So it purposed to make use of the results as a plan and design for future temporary housing against disaster.