• Title/Summary/Keyword: rehabilitation project

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Post-Occupancy Evaluation on Amenity of Apartments and High-rise Residential Complex (아파트와 초고층주거복합건축물의 거주성 조사 연구)

  • Bok, Na-Young;Kang, Boo-Seong;Kim, Jin-Wook;Lee, Hae-Jin;Shim, Kyu-Myung;Kim, Eun-A
    • Proceeding of Spring/Autumn Annual Conference of KHA
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    • 2009.11a
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    • pp.115-120
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    • 2009
  • Since the middle of 1990, "High Rise Residential Complex" has been started to construct to fulfill the use of high density land use. In addition, it bacame a major solution for a rehabilitation project to achieve a high volume ratio, which in turn brings a good business. In this study, POE is applied to secure residential satisfaction level between Apartment and High Rise Residential complex. Also life style differences are investigated between the two type of complexes. It was resulted that recent High Rise Residential Complex is quite acceptable in most respects, however interior vetillation and direct wind flow from living space through dining - kitchen to ease the cooking scent is not a satisfactory level. These two factors are most highly demanded for future design of High Rise Complex in considering specialties in our cultural life style.

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Analysis on the result of I/I calculation by the exiting method and the standardized maual method (하수관거 I/I(침입수/유입수) 분석방법에 따른 산정 결과 비교 -기존 보정방법과 환경부 표준 매뉴얼에 의한 방법-)

  • An, Byung-Mo;Song, Ho-Myun
    • Journal of Korean Society of Water and Wastewater
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    • v.25 no.2
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    • pp.213-221
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    • 2011
  • The purpose of sewer system is to separate rain water from sewage water. Through this, it is possible to prevent the flood and preserve public water territory. For the past few years, many problems of the sewer system have been solved by the execution of sewer rehabilitation project. However, they still exist in sewer system caused by I/I, which are divided into infiltration and inflow. Infiltration means the rain water and underground water that infiltrate through breakage point on pipes, inflow means the water that flows in through misconnection on pipes. This study shows how the I/I calculation has changed according to the new standardized manual and identifies the I/I difference between the new calculation and the existing one. Through the analysis on the two calculation methods we examined the appropriacy of the new method by comparing it to the old one. The result points out that the new standardized manual is more appropriate than the old in aspect of objectivity and reproducibility(establish standardization), rationality(alteration of inflow unit).

A Classification of the Fire Law related by Building Occupancy for the Comparative System of Fire Protection Performance (방재 성능 비교 시스템 구축을 위한 화재관련 법규의 건축 용도별 분류)

  • Shin, Ho-Sub;Suk, Chang-Mok;Cha, Chung-Sook;Han, Ju-Hyung;Kim, Young-Yeon
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • 2008.04a
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    • pp.25-28
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    • 2008
  • Korean city had been rapid developed through high industrialization and rapid economic growth after the 1970's. The city development process was guaranteed the fulfillment of city function through the city expansion based on New Towns and satellite cities rather than the reformation of existing city. This city expansion caused by degrading of city, being backward and producing many problems. To solve this problems, it was considered the rehabilitation of retarded function with rejuvenation such as a special law accelerating urban renaissance and reorganization project. Also a fire protection performance did not satisfied the required conditions of modern FPP system, such as the function deterioration of building facilities, the technological development with FPP facilities, changed fire laws and building occupancy for social needs. Insufficiency of requirements depreciated the building value and intimidated a safety of residents. To solve this problem, the improvement of FPP was essentially required and also strongly recommended an analysis and a comparative study between the required FPP of existing building and it improving effective FPP. Therefore, purpose of this study is that establish the basic data to construct a system to analyze and compare the building FPP.

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Mechanical and electrical properties of cement paste incorporated with pitch-based carbon fiber

  • Rhee, Inkyu;Kim, Jin Hee;Park, Sang Hee;Lee, Sungho;Ryu, Bong Ryeul;Kim, Yoong Ahm
    • Carbon letters
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    • v.23
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    • pp.22-29
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    • 2017
  • The compressive strength and electrical resistance of pitch-based carbon fiber (CF) in cementitious materials are explored to determine the feasibility of its use as a functional material in construction. The most widely used CFs are manufactured from polyacrylonitrile (PAN-based CF). Alternatively, short CFs are obtained in an economical way using pitch as a precursor in a melt-blown process (pitch-based CF), which is cheaper and more eco-friendly method because this pitch-based CF is basically recycled from petroleum residue. In the construction field, PAN-based CFs in the form of fabric are used for rehabilitation purposes to reinforce concrete slabs and piers because of their high mechanical properties. However, studies have revealed that construction materials with pitch-based CF are not popular. This study explores the compressive strength and electrical resistances of a cement paste prism using pitch-based CF.

Seismic assessment and retrofitting measures of a historic stone masonry bridge

  • Rovithis, Emmanouil N.;Pitilakis, Kyriazis D.
    • Earthquakes and Structures
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    • v.10 no.3
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    • pp.645-667
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    • 2016
  • The 750 m long "De Bosset" bridge in the Cephalonia Island of Western Greece, being the area with the highest seismicity in Europe, was constructed in 1830 by successive stone arches and stiff block-type piers. The bridge suffered extensive damages during past earthquakes, such as the strong M7.2 earthquake of 1953, followed by poorly-designed reconstruction schemes with reinforced concrete. In 2005, a multidisciplinary project for the seismic assessment and restoration of the "De Bosset" bridge was undertaken under the auspices of the Greek Ministry of Culture. The proposed retrofitting scheme combining soil improvement, structural strengthening and reconstruction of the deteriorated masonry sections was recently applied on site. Design of the rehabilitation measures and assessment of the pre- and post-interventions seismic response of the bridge were based on detailed in-situ and laboratory tests, providing foundation soil and structural material properties. In-situ inspection of the rehabilitated bridge following the strong M6.1 and M6.0 Cephalonia earthquakes of January 26th and February 3rd 2014, respectively, revealed no damages or visible defects. The efficiency of the bridge retrofitting is also proved by a preliminary performance analysis of the bridge under the recorded ground motion induced by the above earthquakes.

Expansion Strategy of Home Visit Nursing Services of Long-Term Care Insurance (노인장기요양보험 재가방문간호 서비스 개발과 확대 방안)

  • Lim, Ji Young;Kim, Juhang
    • Journal of Home Health Care Nursing
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    • v.27 no.3
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    • pp.241-249
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    • 2020
  • Purpose: This study aimed to investigate possible ways to expand the services of home-visit nursing through a review of the progress, achievements, and obstacles of home-visit nursing; a pilot project of an integrated home-service; the application of the Omaha System; as well as a case analysis of providing home-visit nursing services. Method: An integrated review was conducted using various source materials, including laws, previous studies, and a case analysis. Results: In case analysis of providing visiting nursing service, rehabilitation nursing, end-of-life nursing, and dementia care showed high nursing needs. It was necessary that the various home visit nursing services in the intervention area of the Omaha System, administrative services, case management, and center operation activities were all included in the payment systems of long-term care insurance. Conclusion: In the future, home visit nursing services of long-term care insurance should be reborn in the form of a center for integrated case management in the community, which would set long-term goals until the time of a client's death and encompass the realm of human rights for health, quality of daily life, and a dignity of life.

A STUDY ON THE LIFE CYCLE COST ANALYSIS IN LIGHT RAIL TRANSIT BRIDGES: FOCUSED ON SUPERSTRUCTURE

  • Lee Du-heon;Kim Kyoon-tai;Kim Hyun Bae;Jun Jin-taek;Han Choong-hee
    • International conference on construction engineering and project management
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    • 2007.03a
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    • pp.30-40
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    • 2007
  • The demand for light-rail construction projects has recently been increasing, and they are mostly supervised by private construction companies. Therefore, a private construction company that aim to raise gains from the operation of the facilities during the contract period greater than what they invested should b able to accurately calculate the costs from the aspect of Life Cycle Cost (LCC). In particular, a light-rail transit bridge that has a heavier portion from the aspect of the cost of light-rail transit construction requires a more accurate calculation method than the conventional LCC calculation method. For this, an LCC analysis model was developed and a cost breakdown structure was suggested based on literature review. The construction costs by shape of the upper part of a light-rail transit were calculated based on the cost breakdown system presented in this paper, and the cost generation cycle and cost unit price were collected and analyzed based on records on maintenance costs, rehabilitation and replacement. In addition, after forming some hypotheses in order to perform the LCC analysis, economic evaluation was conducted from the aspect of the LCC by using performance data by item.

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Techno-economic assessment of a very small modular reactor (vSMR): A case study for the LINE city in Saudi Arabia

  • Salah Ud-Din Khan;Rawaiz Khan
    • Nuclear Engineering and Technology
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    • v.55 no.4
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    • pp.1244-1249
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    • 2023
  • Recently, the Kingdom of Saudi Arabia (KSA) announced the development of first-of-a-kind(FOAK) and most advanced futuristic vertical city and named as 'The LINE'. The project will have zero carbon dioxide emissions and will be powered by clean energy sources. Therefore, a study was designed to understand which clean energy sources might be a better choice. Because of its nearly carbon-free footprint, nuclear energy may be a good choice. Nowadays, the development of very small modular reactors (vSMRs) is gaining attention due to many salient features such as cost efficiency and zero carbon emissions. These reactors are one step down to actual small modular reactors (SMRs) in terms of power and size. SMRs typically have a power range of 20 MWe to 300 MWe, while vSMRs have a power range of 1-20 MWe. Therefore, a study was conducted to discuss different vSMRs in terms of design, technology types, safety features, capabilities, potential, and economics. After conducting the comparative test and analysis, the fuel cycle modeling of optimal and suitable reactor was calculated. Furthermore, the levelized unit cost of electricity for each reactor was compared to determine the most suitable vSMR, which is then compared other generation SMRs to evaluate the cost variations per MWe in terms of size and operation. The main objective of the research was to identify the most cost effective and simple vSMR that can be easily installed and deployed.

Tack Coat Inspection Using Unmanned Aerial Vehicle and Deep Learning

  • da Silva, Aida;Dai, Fei;Zhu, Zhenhua
    • International conference on construction engineering and project management
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    • 2022.06a
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    • pp.784-791
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    • 2022
  • Tack coat is a thin layer of asphalt between the existing pavement and asphalt overlay. During construction, insufficient tack coat layering can later cause surface defects such as slippage, shoving, and rutting. This paper proposed a method for tack coat inspection improvement using an unmanned aerial vehicle (UAV) and deep learning neural network for automatic non-uniform assessment of the applied tack coat area. In this method, the drone-captured images are exploited for assessment using a combination of Mask R-CNN and Grey Level Co-occurrence Matrix (GLCM). Mask R-CNN is utilized to detect the tack coat region and segment the region of interest from the surroundings. GLCM is used to analyze the texture of the segmented region and measure the uniformity and non-uniformity of the tack coat on the existing pavements. The results of the field experiment showed both the intersection over union of Mask R-CNN and the non-uniformity measured by GLCM were promising with respect to their accuracy. The proposed method is automatic and cost-efficient, which would be of value to state Departments of Transportation for better management of their work in pavement construction and rehabilitation.

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Evaluating the Effectiveness of Chuna Manual Therapy for low back pain in the Pilot Insuring Project of the National Health Insurance (건강보험 시범사업 기관에 내원한 요통환자에 대한 추나요법 유효성 평가 연구)

  • Ryu, Jiseon;Kim, Dongsu;Shin, Byung-Cheul;Lim, Byungmook
    • Journal of Society of Preventive Korean Medicine
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    • v.22 no.3
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    • pp.1-10
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    • 2018
  • Backgrounds : In 2017, National Health Insurance implemented the pilot insuring project for Chuna manual therapy(CMT). 65 Korean Medicine(KM) hospitals and clinics were selected in the project to monitor the provision of insured CMT. Objectives : This study aimed to evaluate the effectiveness of CMT for low back pain provided in the real world setting. Methods : Patients with low back pain who agreed to participated in the study were enrolled and requested to complete questionnaires. Patients who received CMT regardless of receiving other KM therapies were classified to Chuna group, and patient who received KM therapies without CMT to KM group. Pain(pain-VAS) and back function(KODI, Oswestry disability index-Korean version), quality of life were assessed at baseline, 4 weeks, and 8 weeks. Additionally, patients who received CMT twice and more, and who's pain-VAS 20 and over were included, and patients who used pain injection were excluded in the analysis. Results : Of 371 patients who completed all questionnaire (mean age=42.6years, SD=12.45; 61% female), 96 were excluded, 170 were in Chuna group, and 105 were in KM group. Proportions of patients who had low back pain for more than twelve weeks in the Chuna group and KM group were 57.7% and 24.8%, respectively. Pain and back function were significantly improved on 4weeks and 8weeks in both groups, but there was no difference between two groups. For the patients in the sub-acute and chronic stage(>=12 weeks), change of total KODI scores in the Chuna group was higher than KM group(p=0.013) at 4weeks. Conclusions : CMT with other KM therapies can improve back function in the sub-acute and chronic patients. For insurance policy decision, economic evaluation of CMT is needed.