Building Maintenance Research Articles

MILP of multitask scheduling of geographically distributed maintenance tasks

Due to its proactive impact on the serviceability of components in a system, preventive maintenance plays an important role particularly in systems of geographically spread infrastructure such as utilities networks in commercial buildings. What makes such systems differ from the classical schemes is the routing and technicians' travel times. Besides, maintenance in commercial buildings is characterized by its short tasks’ durations and spatial distribution within and between different buildings, a class of problems that has not been suitably investigated. Although it is not trivial to assign particular duties solely to multi-skilled teams under limited time and capacity constraints, the problem becomes more challenging when travel routes, durations and service levels are considered during the execution of the daily maintenance tasks. To address this problem, we propose a Mixed Integer Linear Programming Model that considers the above settings. The model exact solution recommends collaborative choices that include the number of maintenance teams, the selected tasks, routes, tasks schedules, all detailed to days and teams. The model will reduce the cost of labor, replacement parts, penalties on service levels and travel time. The optimization model has been tested using different maintenance scenarios taken from a real maintenance provider in the UAE. Using CPLEX solver, the findings demonstrate an inspiring time utilization, schedules of minimal routing and high service levels using a minimum number of teams. Different travel speeds of diverse assortment of tasks, durations and cost settings have been tested for further sensitivity analysis.

Appropriate building repair and maintenance strategies using multi-criteria decision making analysis – A Delphi study

As an influential and significant factor in improving the service of building components and elements, maintenance plays an essential role in maintaining reliability, availability, and quality, as well as increasing efficiency and security. Therefore, how to define this maintenance system and determine the appropriate criteria and strategies for that play an important role in the cost and longevity of the buildings after construction and during their operation. The purpose of the article is to determine the effective criteria for evaluating buildings based on maintenance and repair (R&M) and finally determining the appropriate strategy for the maintenance of residential buildings, using multi-criteria decision-making methods. These criteria were first identified by reviewing the literature and using the Delphi method to obtain the opinions of maintenance experts. The criteria were then prioritized, based on the SWARA method, and the results were compared and evaluated. Based on comparison, safety, health, environment, and proper utilisation were rated the top four criteria to consider for building R&M. Finally, using the VIKOR[1] method, it was found that the breakdown maintenance (BM) and corrective maintenance (CM) strategies are the best strategies to use for the R&M of residential buildings. [1] Vlse Kriterijumsk Optimizacija Kompromisno Resenje.

Управление жилищно-коммунальными услугами в многоквартирном доме: оценка альтернативных способов

The article presents a comparative analysis of the main methods of housing and communal services management in an apartment building in Russia: direct management of the owners of premises, management of a homeowners’ association or a housing cooperative, management of a management organization. The purpose of the work is to identify the advantages and disadvantages of various methods of housing and communal services management, depending on the various characteristics of apartment buildings and the characteristics of the owners of premises, which allows improving the methodological tools of organizational and managerial aspects of the activities of economic entities in the housing and communal services market. The author has compiled in the table a description of alternative ways of managing an apartment building in accordance with the Housing Code of the Russian Federation. The author gives an assessment of the positive and negative sides of each of the listed methods. The author came to the conclusion that the owners of premises in an apartment building, when choosing a management method, should take into account the satisfaction of consumers of housing and communal services as much as possible, should comply with laws, sanitary and technical rules for the maintenance of an apartment building, and should also minimize the costs of managing an apartment building. The results of the comparative analysis will allow the owners of premises and local self-government bodies to make a more rational choice of the method of managing the MCD. Also, this study makes it possible to highlight problems in the issues of control of management companies and further improve the regulatory and legal norms governing activities in the field of management of MCD. The results obtained by the author will be useful for drawing up various government programs that stimulate the processes of digitalization of service activities of management companies in the provision of housing and communal services.

Rehabilitation and Providing Functionality for Preserving Architectural Monuments from Damage Factors

The process of maintenance and rehabilitation of archaeological buildings play an important and vital role in preserving the human heritage from exhaustion to remain an essential and indispensable milestone through its interaction with the community in addition to the economic aspect gained from its reinvestment. Developed countries have realized that, the best way to preserve the historic building and prolonging its life alongside maintenance, is by its rehabilitation by providing a new function that ensures its survival and continuity, with taking in consideration not to damage or change its historical value and privacy and that the new function be harmony and consistent with the cultural nature of the architectural building and its structure and ,and consist with the conditions of Venice agreement 1964.The re-employment of archaeological buildings and areas are considered the best solutions that balance between the needs of urban growth, and estate development and economic benefit, ,therefore the process of rehiring is important for both the building itself or for the urban environment and the general nature of the city it contains. Rehabilitation and functionality of buildings and archaeological areas are to preserve them from damage is what must be the top priority of governments, archaeological and tourist organizations .The research discusses the problems associated with the damage caused by leaving the buildings without rehabilitation and usage, and the possibility of developing an effective strategy for the rehabilitation and employment of architectural monuments that harmony with contemporary reality ,and try to meet future challenges in protecting them from natural and human damage. The problem discussed in the research is about the Insufficient research attention and lack of maximum benefit from research studies dealing with the rehabilitation, investment and preservation of architectural monuments and their preservation from damage factors and The research aims to Highlighting the need to rehabilitate, invest and preserve architectural monuments from damage factors, Establishment of general objectives for restoration and rehabilitation processes that must be applied to architectural heritage and - Highlighting some experiences in Rehired buildings and determination the resulting pros and cons. The importance of research lies in studying the different policies for the rehabilitation and investment of architectural artifacts and Development of a strategic framework for the protection and preservation of architectural heritage through rehabilitation and investment , The research used the descriptive method , The most important results obtained, The erroneous choice of new recruitment of archaeological buildings damages its architectural value and accelerates its deterioration , Repurpose the architectural heritage as a way to revive traditional crafts, Repurpose is the most important strategy of architectural heritage preservation techniques, Analysis of successful experiments leads to the development of preserving architectural heritage and transferring experience to successive generations , The human plays a major role in the destruction of archaeological possessions as a result of low awareness about the importance of heritage

Conservation Practices Depleting Values and Lifespan of Heritage

Human Life was developed based on needs and requirements for living. Each building embodies one or more of these concepts, such as life, love, hope, and death, in its own unique way. Many beautiful works have been created to express love such as Taj Mahal. The importance of hope (temples) and the requirement for burial grounds or crypts to satisfy the after death were factors in the development of religion and society. Buildings and monuments play a significant role in cultural representation or serve as a remembrance to an occasion. Heritage has been harmed and destroyed for the last few decades. Their sense of belief in tradition and culture had been eroded by human society's unceasing yearning for advancement. The maintenance and preservation of such buildings and their worth are significant due to the necessity for knowledge about historical events and developments. Conservation is the process of preserving and restoring the fundamental (architectural and historic) qualities of heritage by eradicating erosion and sedimentation signals (usually) using a variety of techniques, while creating an urban context to blend with modernist features. The Indian Conservation History and study of practices based on values and architectural context is very rich. There are a lot of conservation methods regardless of engineering background, which helps in the preservation of Heritage. The approaches had benefits and drawbacks that must be identified for the sustainability of Heritage. The study of conservation in this document is based on architectural and intangible values, which include cultural, mythical, regional (urban), environmental, traditional, social, and service accommodations.

A comparative analysis of seismic and tsunami fragility curves for school buildings in Banda Aceh coastal area

The potential for a large disaster in Banda Aceh City requires that the school buildings to be highly resilient to the risks that may arise. One of the efforts to evaluate the performance of the building structure is by developing a fragility curve that shows the probability of damage to school buildings. For seismic susceptibility, the fragility curve is formed using the Incremental Dynamic Analysis method which uses historical earthquake data. As for tsunami susceptibility, the fragility curve is formed by reviewing the inundation heights that have occurred based on the data that have been available. The aim of this study is to elaborate the seismic and tsunami susceptibility of the typical school buildings that located in three coastal districts in Banda Aceh City. The summary results of this study indicate that it is necessary to carry out periodic maintenance of school buildings in the coastal area of Banda Aceh city so that they become strong buildings and are ready to be used if a large-scale disaster occurs.

“Internet+ Party Building”: Research on the Integrated Management System of Grassroots Party Building at the Fingertips

The purpose of the research is to develop an integrated information platform for grass-roots Party construction in colleges and universities, as well as improving the target, efficiency, and integration of grass-roots Party construction management. The development of grassroots parties at colleges and universities must now contend with additional difficulties such as information fragmentation, poor PC and mobile terminal integration, a lack of online and offline connectivity, and data security. In the research, we have implemented timely mechanism innovation, platform reconstruction, reconstruction of Party building data standards, operation and maintenance of information security, enrichment of carriers and team building, among other targeted actions, in the framework of “Internet+ Party building”. In the end, the aforementioned measures are extremely important as research results for advancing the development of a comprehensive information platform for grassroots Party construction and the use of Party construction activity at colleges.

Application of BIM Technology in Building Operation and Maintenance Management

The operation and maintenance stage is the longest key stage in the whole life cycle of a construction project. In this stage, not only a large amount of data information needs to be processed, but also many aspects such as building safety, space and equipment maintenance need to be considered. Compared with the stage of building design and construction, its management is more difficult. To solve this problem, this paper introduces BIM technology into the operation and maintenance management stage, and elaborates the application of BIM technology in five aspects in the operation and maintenance management stage in detail. Finally, it studies the actual situation of BIM technology application in the operation and maintenance stage by swot analysis, which is of practical significance to promote the application of BIM technology in building operation and maintenance management, and will further promote the in-depth popularization of BIM and maximize its value.

The Effect of the Expected Time-to-Purchase on the Acceptable Price Premium for Green Buildings

Green buildings help to mitigate the impacts of construction on the environment by reducing the use of natural resources and limiting the emission of air pollutants associated with building construction and maintenance. Homebuyers who understand the life-cycle benefits of green buildings (such as lower operating costs, better indoor environment and reduced environmental impacts) are often willing to pay an additional price premium for such buildings. Although several studies examined the factors affecting the acceptable size of green building price premium, how the expected time to home purchase might affect the acceptable size of such premium remains unexplored. Here, we attempt to answer this question by using data from a countrywide survey carried out in Israel, in which responses from 390 potential homebuyers were collected and analyzed. We find that the willingness to pay a price premium for green buildings changes significantly with time to purchase and is the lowest for respondents who state that they do not plan to buy a home anytime in the near future. We explain this rather unexpected result by arguing that people who have no immediate home buying intention, might have only limited knowledge about contemporary housing market trends and thus do not consider green building as a viable alternative to traditional construction.

Assessment of Public Building Defects and Maintenance Practices: Cases in Mettu Town, Ethiopia

Assessment of Public Building Defects and Maintenance Practices: Cases in Mettu Town, Ethiopia

An artificial neural network analysis of the satisfaction of hospital building maintenance services

Modern hospital buildings are very large, complex, sophisticated, and costly structures. The productivity of the hospital building users is influenced by the building performance. Maintenance services are conducted on the buildings to ensure optimum building performance and users’ satisfaction. However, many instances, have been recorded dissatisfactions among the hospital building users with respect to the performance of the maintenance services. This research investigated the satisfaction of private hospital building users with respect to maintenance services through a survey questionnaire that included ten satisfaction of maintenance services. The data revealed that the users are most satisfied with the standard of workmanship, cleanliness of the maintained area, communication with users during maintenance works, and degree of politeness and kindness of the maintenance workers. Using the nine/ten as the independent variables, an artificial neural network model to predict the satisfaction of users with maintenance services was presented. The model revealed that cleanliness and tidiness of the maintained area and the quality of maintenance works are the main predictors of the total maintenance service delivery of the maintenance organisations.

A study on the Crime Prevention Effect of Urban Regeneration Projects

본 연구는 도시재생 사업이 활성화된 경상남도 A시와 B시의 사업지역을대상으로 설문 및 범죄자료를 비교 분석하고, 도시재생 사업에서 셉테드(CPTED)의 연계 가능성을 고찰하기 위해 진행되었으며 연구 결과는 다음과같다. 첫째, 주민인식 분석 결과, A시와 B시 사업지역 모두 생활안전 개선의 필요성이 매우 높은 특징이 확인되었으며, 도시재생 사업의 요소와 주민들의 인식적 측면의 범죄 불안감은 어느 정도 관계가 있는 것으로 나타났다. 특히, 대인범죄 불안감은 이웃 간 신뢰도, 공동체 활동 참여도 등 사회적 환경(S/W) 개선, 대물범죄 불안감은 생활환경 및 도시재생 사업 만족도, 동네환경 및 지역경제 개선 기대효과 등 주로 물리적 환경(H/W)의 개선과 관계가 있는 것으로 추론되었다. 둘째, 사업지역 범죄추세 분석 결과, A시 사업지역은 침입-대물범죄, B시사업지역은 침입-대인/대물범죄, 노상-대인범죄 감소에 효과가 있는 것으로나타났으며, 인접 행정동의 감소 추세보다 큰 폭으로 감소해 도시재생 사업에의한 범죄예방 효과가 있었다고 추론된다. 또한, 세부 사업요소와 범죄자료를 비교한 결과, 두 사업지역 모두 노후 건축물 정비 등 물리적 환경개선에 따른범죄예방 효과가 나타났지만, 여전히 범죄 불안감은 높은 것이 확인되었다. 기존의 선행연구와 본 연구에서도 확인된 바와 같이 범죄와 범죄 불안감은상호 관계가 있음을 고려한다면 후속 도시재생 사업에서는 셉테드 내용을 적극적으로 추가하고, 사업 모니터링 과정에서 공간유형별 범죄 및 범죄 불안감을 분석하여 현재보다 더욱 긍정적인 효과를 규명한다면 도시재생 사업을 통한 셉테드의 확산도 가능할 것으로 판단된다.This study was conducted to compare and analyze surveys and crime data for business areas in A and B cities in Gyeongsangnam-do, where urban regeneration projects were activated, and to examine the possibility of CPTED linkage in urban regeneration projects, and the study results are as follows. First of all, as a result of resident perception analysis, it was confirmed that the need for improvement of life safety was very high in both city A and city B project areas, It was found that there was some relationship between the elements of urban regeneration projects and fear of crime. In particular, anxiety about Crimes against Persons is related to improvement of social environment (S/W) such as trust between neighbors and participation in community activities, while anxiety about Crime against object is mainly related to physical environment (H/W) was inferred. Second, as a result of analyzing the crime trend of the project area, it is inferred that the A city business area was effective in reducing intrusion-object crime, B city business area was effective in preventing crimes by urban regeneration projects. In addition, as a result of comparing detailed business elements and crime data, both business areas showed crime prevention effects due to improvement in the physical environment such as maintenance of old buildings, but fear of crime was still high. Considering that crime and crime anxiety are mutually related as confirmed in previous studies and this study, CPTED contents are actively added in the subsequent urban regeneration project, and crime and crime anxiety by space type are analyzed in the project monitoring process. Therefore, if more positive effects than the present are identified, it is judged that the spread of CPTED through urban regeneration projects is possible.

Analysis of Back-End Requirements of a Web-Based Application to Identify Damage for Building Structures

The need for well-maintained facilities can certainly affect activities in the building. To meet these needs, a building maintenance work program is needed to achieve the planned life of the building. The problem with contractors is that they still use telephone communication to receive reports of any damage to the building. This paper discusses the needs analysis in the construction of a building damage reporting system from the back-end side. The application is built on a web-based basis and provides information about the building in terms of the structural aspect as well as grouping the damage based on the damage criteria. The results of this study are obtained in the form of 10 tables that will compile a system database and transaction analysis that can be done in the system, namely generating building damage data reports where there are four categories of damage, namely light damage, moderate damage , severe damage, total damage and this application can later be used by building managers in reporting building damage through applications and contractors can monitor through applications

Asbestos Exposure and Malignant Mesothelioma in Construction Workers-Epidemiological Remarks by the Italian National Mesothelioma Registry (ReNaM).

Notwithstanding the ban in 1992, asbestos exposure for workers in the construction sector in Italy remains a concern. The purpose of this study is to describe the characteristics of malignant mesothelioma (MM) cases recorded by the Italian registry (ReNaM) among construction workers. Incident mesothelioma cases with a definite asbestos exposure have been analyzed. Characteristics of cases and territorial clusters of crude rates of MM in construction workers have been described, as well as the relation between asbestos use before the ban and the historical trend of workforce in the construction sector in Italy. ReNaM has collected 31,572 incident MM cases in the period from 1993 to 2018 and asbestos exposure has been assessed for 24,864 (78.2%) cases. An occupational exposure has been reported for 17,191 MM cases (69.1% of subjects with a definite asbestos exposure). Among them, 3574 had worked in the construction sector, with an increasing trend from 15.8% in the 1993–98 period to 23.9% in 2014–2018 and a ubiquitous territorial distribution. The large use of asbestos in construction sector before the ban makes probability of exposure for workers a real concern still today, particularly for those working in maintenance and removal of old buildings. There is a clear need to assess, inform, and prevent asbestos exposure in this sector.

Defect management of hospital buildings

Healthcare organisations are increasingly recognising the need to improve building performance in order to improve health care delivery, profits, and to reduce penalties. Hospital maintenance organisations are under constant pressure to plan maintenance work due to a shortage of funds on account of huge catalogues of defects in hospital buildings. While investments in hospital building maintenance are increasing, the requirement to increase building performance and user satisfaction is also increasing. The nature of building faults and the factors that influence hospital building maintenance management in Malaysia were explored. Primary data were collected through structured interview techniques involving six hospital maintenance organisations. According to the results of a survey interview involving six hospitals, water seepage, cracks, peeling paint, broken ironmongery, pipe leakage, damaged plasterboard, and discoloured paint are all widespread in hospital structures, according to the results of a survey interview involving six private and public hospitals. The key aspects that determine the maintenance management practise of hospital buildings are user attitudes, misuse/abuse, weather, and bad maintenance practice. The data revealed that hospital building users are demanding improved building performance through enhanced maintenance management service delivery. Implicit in the findings of this research is the lack of effective maintenance organisations. It is necessary to reorganise the hospital's maintenance organisations. From an ontological standpoint, the main findings of this study are generalizable to other hospitals and building typologies in and outside of Malaysia.

Fundusz Kwaterunku Wojskowego w Polsce międzywojennej

The initiative to establish the Military Housing Fund ( Fundusz Kwaterunku Wojskowego , FKW) was launched in 1925 in the Polish Senate, which, during considering the draft Act on accommodation for the army in peacetime adopted by the Polish Sejm opposed the possibility provided for by the draft law (causing social unrest) to seize (for a compensation) private premises for permanent accommodation for officers and married non-commissioned officers, in a situation where other (specified in the Act) methods of acquiring housing for this purpose did not bring the expected results. The Senate voted in favour of the construction and maintenance of residential buildings intended as permanent housing for the military by a specially established FKW. A fundamental role in the structure of its financing (as non-returnable income) was played by the accommodation tax. However, it covered the same premises and the same people who were already burdened with the municipal tax on premises and the state tax on premises. The situation in which the same premises and the same individuals were burdened, according to the same rules, with three taxes (in the total amount of up to 15% of rent), changed on 2 August 1926 with the enactment of the Act on the tax on premises, which replaced the previous ones and the new tax was to be collected starting from 1 August 1926, also for the purposes of the FKW (a total of 114,174,379 Polish zlotys was paid to the FKW account by the end of 1938). This solution, combined with the authorisation of the FKW to take out (with the guarantee of the Government) a loan of up to 140 million zlotys, allowed the FKW to pursue a quite broad construction activity, which resulted (in the period 1927–1937) in 7,334 dwellings for officers and married non-commissioned officers (in 1938 a total of 1,577 dwellings were under construction).

Study on Deterioration Characteristics and Fracturing Mechanism of Concrete Under Liquid Nitrogen Cold Shock

High-pressure water jet crushing concrete has significant advantages in safety, quality and environmental protection, which has a broad application prospect in the maintenance and reconstruction of concrete building. Nevertheless, it still has some problems such as high threshold pump pressure and large specific energy consumption. Water jet breaking concrete with liquid nitrogen (LN2) cold shock assistance combined with the low-temperature-induced fracturing and hydraulic impact can effectively reduce the working pressure of water jet and improve the energy utilization rate. On account of the unclear cracking characteristics and mechanism of concrete under the LN2 cold shock, this research carried out the following systematic research focusing on the key scientific issues above based on mechanical tests, scanning electron microscopy (SEM), and nuclear magnetic resonance (NMR). Results indicate that the total mass of concrete exfoliated blocks after compression failure increases as the LN2 cold shock time and the number of shock cycles goes up, and the uniaxial compressive strength decreases from 8.27 to 21.96%. Through SEM and NMR analysis, it is found that LN2 cold shock can cause more micro-cracks to develop inside the concrete, and the pore development increases as the cold shock time and the cycle number increase. Additionally, under the condition of water jet pump pressure of 150 MPa, the maximum width and depth of crater for cold shock of 5 min increase by 41.79% and 20.48%, respectively, and those for cold shock of 10 min increase by 76.72% and 40.43%, respectively, compared with the original sample.

Critical Insight into Defects in Malaysia Hospital Buildings Maintenance Management

Healthcare buildings require efficient maintenance management to afford patients, visitors, and other users of hospital buildings such as healthcare professionals a serene and safe environment that accelerates wellbeing and provides maximum comfort. To achieve this goal, hospital buildings must adopt effective maintenance management approaches and services. Apart from ensuring the safety of the environment, users of the buildings must be satisfied with the quality of available services, particularly, those offered to patients. Against this backdrop, this study assesses the effects of defects on hospital buildings and analyzes the practicality of maintenance best practices such as sufficient allocations of funds and appropriate management of resources (including time and labor) towards the improvement of the prevalent status quo. This is important because the maintenance practices employed in hospitals intrinsically impact the performance of the hospital buildings as a result of defects. Survey questionnaires were administered to users of hospital buildings in Malaysia. The most significant defects reported concerned Algae on concrete floors, weather and climate conditions, and sanitary appliance & fittings damages. These defects depreciate the appearance, functionality and utility of hospital buildings thereby lessening their performance and efficiency. Therefore, this study asserts the pertinence of reevaluating the maintenance management approaches employed towards the rectification of the highlighted defects in hospital buildings across Malaysia. The study posits the adoption of systemic proactive maintenance procedures to preempt decay, causalities and reduce cost implications.

REDUCTION OF THE BIM DIMENSION OF THE FULL LIFE CYCLE OF BUILDING AND FACILITIES

Statement of the problem. The subject of the research is information models of a complete life project in the sector of architecture, design and construction and maintenance of buildings and structures. The purpose of the research is to optimize BIM technologies by building a model based on a discrete vector data description. Results. Analyzed the main obstacles to the widespread introduction of BIM technologies and procedures for the full life cycle of a construction project in the practice of the construction complex of the Russian Federation throughout the entire life cycle of the project, including the stages of construction, operation and disposal, as well as global trends in this process. The method of BIM dimension reduction based on discrete vector data description is formulated. The technology of forming a hierarchical dynamically added and updated information base BIM, taking into account the possibility of its aggregation, has been developed. The algorithms proposed in this work are implemented in the shell of a relational database management system. Conclusions. BIM dimension reduction, based on a discrete vector description of data, allows youto completely solve the problems of both designing and updating the BIM information base, and its transfer between project participants. BIM data formats are determined by the stage of the complete project life cycle. Fully functional for the stage of determining the scope of work on a project, BIM is one-dimensional and is simply determined by the vector of clusters of a lower degree of integration, which allows you to completely overcome all obstacles to the widespread introduction of BIM technologies and procedures of the full life cycle of a construction project into practice. The optimal shell for the implementation of BIM technologies is relational databases.

Perpustakaan dalam pelestarian warisan budaya di Indonesia tinjauan literatur sistematis

Introduction. Libraries as information institution serves users by collecting, managing and disseminating information and knowledge. One of the important is by preserving cultural heritage. This study aims to describe role of libraries in preserving cultural heritage through publication of scientific articles on the topic of cultural heritage.
 Data Collection Methods. The paper used a systematic literature review with a qualitative approach.
 Data Analysis. Several stage involved in data analysis included planning, implementinging, and synthesising the search results
 Results and Discussion. Findings indicate there are seven selected journal articles discussing policies as obstacles in the preservation of cultural heritage and there are five articles containing the role of libraries focusing on physical form and public education.
 Conclusion. Based on the selected scientific journal articles describing the role of libraries in Indonesia in preserving cultural heritage, the topics focuses on education for community, procurement, maintenance of physical buildings, ancient manuscripts collections and cultural themes. Furthermore,constraints and challenges faced by libraries,including policies, create an impact on human resources, budget and infrastructure.