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Journal articles on the topic 'Buildings, mechanical equipment'
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1
Nash, Anthony. "Noise from rooftop mechanical equipment in residential buildings." Journal of the Acoustical Society of America 125, no. 4 (April 2009): 2494. http://dx.doi.org/10.1121/1.4783331.
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Wu, Liang, Changzhong Wu, and Jiaxin Tian. "Structural design of architectural 3D printing equipment." Journal of Physics: Conference Series 2541, no. 1 (July 1, 2023): 012001. http://dx.doi.org/10.1088/1742-6596/2541/1/012001.
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Abstract Referring to the development status of building 3D printing equipment at home and abroad, this paper compares various schemes, and designs and analyzes the performance parameters of the mechanical system and various mechanisms of building 3D printing equipment. The detailed design scheme of each component is present and provides a reference for the development of 3D printing equipment for large buildings in the future.
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Wowk, Roman. "Optimizing building designs for mechanical equipment tones." Journal of the Acoustical Society of America 153, no. 3_supplement (March 1, 2023): A150. http://dx.doi.org/10.1121/10.0018468.
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Poor noise conditions in buildings often involve tones from mechanical equipment. However, noise criteria generally neglect tones due to (1) lack of agreement on what constitutes a tone; (2) lack of acoustical data from equipment and noise treatment manufacturers in ⅓-octave or better resolution; and (3) limited design tools and resources to act on detailed information even if it were available. Since building designs also cannot be tested and optimized prior to production like cars, appliances and other mass-produced products, problems can remain hidden until final occupancy. Therefore, design strategies usually involve a variety of conservative and/or safe “best practice” approaches that avoid certain space adjacencies or equipment types altogether, often at significant cost. This is unsurprising when considering the complexity and risks associated with many tonal noise control problems, often including sound-structure interaction. However, a path for innovation exists through wider use of frequency-response-function (FRF) measurements (or measurements with otherwise known inputs) and the ability to analyze, share and incorporate the findings into source-path-receiver designs. This presentation will propose steps to gather, standardize and distribute such information and use case studies to illustrate how this is an enormous opportunity for optimizing building designs for cost and performance.
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Feng, Xian Jie. "Passive Wireless Communication Technology Applied in Green Building." Advanced Materials Research 1061-1062 (December 2014): 1190–93. http://dx.doi.org/10.4028/www.scientific.net/amr.1061-1062.1190.
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The passive wireless communication as a kind of advanced new technology, has been widely applied in the green energy-saving buildings. It is through the control of building system terminal equipments, data exchange mode and control layer, and update the mechanical and electrical equipment control logic, to achieve the purpose of implementation of green energy-saving renovation project. The use of this technology to radically reduce the construction cost, and not just make the energy consumption of building system control, and a substantial reduction in cable laying, metal used, battery replacement, pollutants brought about by the construction cost. Advanced passive wireless sensor, using energy collection technology, and make full use of indoor light energy in daily life, human activities of mechanical energy, etc., to achieve the purpose of automatic control of the green building system.
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Wallace, Marc, Matthew Riegert, and Patricia Rosa. "The boom in life science development and its impacts on community noise." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 264, no. 1 (June 24, 2022): 735–44. http://dx.doi.org/10.3397/nc-2022-804.
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There is a boom in life science research and laboratory development in many areas of the country. And the speed of that development has accelerated since the COVID-19 pandemic. A life science facility may look like a traditional office building, but the sound emitted from the rooftop mechanical equipment associated with spaces occupied by pharmaceutical and biotechnology companies is distinct. A sound study was prepared for permitting the reconstruction of a major mixed-use redevelopment in an urbanized area of greater Boston. The redevelopment included retail, office, laboratory, residential and hotel uses amongst multiple buildings that would occur over several years. The complexity of the project required the collaboration of the developer, architectural and mechanical design teams, and acoustical consultants, to ensure that the cumulative sound impacts from all the buildings' future rooftop mechanical equipment did not exceed the local noise ordinance once the redevelopment was completed. The sound study also allowed the buildings to later be customized for future life science tenants. This paper will present the framework developed for each design team to allow the project to demonstrate compliance by establishing a noise budget.
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Retamales, Rodrigo, Gilberto Mosqueda, Andre Filiatrault, and Andrei Reinhorn. "Testing Protocol for Experimental Seismic Qualification of Distributed Nonstructural Systems." Earthquake Spectra 27, no. 3 (August 2011): 835–56. http://dx.doi.org/10.1193/1.3609868.
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Building codes and standards now require seismic qualification of mechanical and electrical equipment and their mounting systems in important buildings to ensure that they remain functional during and after major seismic events. To better understand the seismic behavior of nonstructural building contents and equipment, experimental procedures have been proposed for either displacement or acceleration sensitive nonstructural components, through racking or shake table protocols, respectively. However, certain types of nonstructural systems are sensitive to both accelerations and interstory drifts. An innovative testing protocol is proposed that can subject nonstructural systems to the combined accelerations and interstory drifts expected within multistory buildings during seismic shaking. Moreover, the proposed protocol, when used with equipment such as the University at Buffalo Nonstructural Component Simulator (UB-NCS), allows for the assessment of the seismic performance of distributed nonstructural systems with multiple attachment points, and the evaluation of seismic interactions between components. The versatility and capabilities of the testing protocol are demonstrated through testing of a full-scale hospital emergency room containing typical nonstructural components and life support medical equipment.
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Abramkina, D., and A. Ivanova. "STUDY OF NOISE LEVELS FROM VENTILATION SYSTEMS IN CORRIDORS OF RESIDENTIAL BUILDINGS." Bulletin of Belgorod State Technological University named after. V. G. Shukhov 8, no. 1 (January 16, 2023): 32–41. http://dx.doi.org/10.34031/2071-7318-2022-8-1-32-41.
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Stained glass windows are applied in residential buildings more often nowadays, and therefore the natural ventilation is impossible to apply. The mechanical ventilation is good for apply in the situation. A lot of questions about the rationing of the noise in internal rooms in residential buildings are arisen. Residents complain the ventilation equipment noise from inter-corridor and the living area. Therefore, the question about study of noise generation in ventilation system and mechanical equipment^ that is applied in design, issue requires detailed research. For the study the question is necessary to do some research: analysis of foreign articles of noise regulation, measurement of noise in the inter-corridor and residential spaces, doing some calculations based on researching measurements, identification of normative noise characteristics for measurement data and carrying out measurements on noise measurement in the ventilation. This article presents the results of natural studies on noise levels from the operation of engineering equipment in the inter-apartment space of a residential building in the daytime (from 08:00 to 22:00 hours) and at night (from 00:00 to 06:00 hours) of the day. A theoretical study was carried out to compare the standard levels of sound pressure in residential buildings in different countries.
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Ingeli, Rastislav, and Peter Buday. "Analysis of the Impact of the Fireplace Heating on the Energy Performance of the Family House." Periodica Polytechnica Mechanical Engineering 64, no. 2 (March 13, 2020): 145–49. http://dx.doi.org/10.3311/ppme.14979.
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Reduction of energy use in buildings is an important measure to achieve climate changes of mitigation. It is essential to minimize heat losses when designing energy efficient buildings. For energy efficient building in a cold climate, a large part of the space heating demand is caused by transmission losses through the building envelope. In compliance with the today's trend of designing sustainable and energy-saving architecture, it is necessary firstly to solve the factors influencing the energy balance. This year the subsidy for houses has been valued at € 8,000. The condition is that the building is classified in the energy class A0 according to the Energy Performance Act. Energy class A0 characterizes nearly zero energy buildings. The main concern is for the public to become interested in such buildings. The subsidy is designed to reward and promote those buildings that their heat and technical characteristics and modern technical equipment that meet energy class. In addition to a good plan to raise the profile of such buildings, there has been a lot of speculation to help make buildings in energy class A0. They are mainly owners of family houses where there is no gasification and are forced to have electricity as a source of heat and hot water. Electricity has a high primary energy factor, which means that buildings do not have to be approved.
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Porter, Keith, Gayle Johnson, Robert Sheppard, and Robert Bachman. "Fragility of Mechanical, Electrical, and Plumbing Equipment." Earthquake Spectra 26, no. 2 (May 2010): 451–72. http://dx.doi.org/10.1193/1.3363847.
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A study for the Multidisciplinary Center for Earthquake Engineering Research (MCEER) provides fragility functions for 52 varieties of mechanical, electrical, and plumbing (MEP) equipment commonly found in commercial and industrial buildings. For the majority of equipment categories, the MCEER study provides multiple fragility functions, reflecting important effects of bracing, anchorage, interaction, etc. The fragility functions express the probability that the component would be rendered inoperative as a function of floor acceleration. That work did not include the evidence underlying the fragility functions. As part of the ATC-58 effort to bring second-generation performance-based earthquake engineering to professional practice, we have compiled the original MCEER specimen-level performance data into a publicly accessible database and validate many of the original fragility functions. In some cases, new fragility functions derived by ATC-58 methods show somewhat closer agreement with the raw data. Average-condition fragility functions are developed here; we will address in subsequent work the effect of potentially important—arguably crucial—performance-modifying factors such as poor anchorage and interaction.
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Berlinov, M. V. "Vibration Safety During the Operation of Industrial Building Structures under Conditions of Dynamic Effects from Equipment." Occupational Safety in Industry, no. 6 (June 2023): 81–89. http://dx.doi.org/10.24000/0409-2961-2023-6-81-89.
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A general approach to the vibration safety of capital construction objects in Russia under the conditions of dynamic effects from industrial equipment is given based on the analysis of the requirements for the structures of buildings and facilities at the design and operation stage. The directions that are related to buildings and structures are described, including the mechanical safety requirements for buildings and structures. The analysis was carried out in order to determine the requirements for the structures of buildings and facilities that require processing in order to harmonize Russian regulatory technical documents in construction and industrial safety. The relevance of the chosen topic is determined by its compliance with the main goals and objectives of the Russian state policy in the field of industrial safety, aimed at consistently reducing the risks of accidents occurrence at the industrial facilities, and minimizing their negative consequences. The article states that the characteristics of the elements of building structures, which were considered during the design in dynamic calculations of the strength and stability of a building or structure, may change during operation under the influence of climatic factors or aggressive influences of external and internal environments, including the influence of technological processes that can cause fatigue phenomena in the material of building structures. The method of calculation for dynamic loads of structures of buildings and facilities, considering the changes in power and environmental influences during operation, is briefly described. The main proposals for changing the requirements for the structures of buildings under vibration effects were developed and compiled in the form of a list. The results of the implementation of the submitted proposals will contribute to improving the efficiency of the processes of domestic industrial construction of buildings and structures, updating the regulatory and technical base, ensuring the safety of production facilities, maintaining compliance of buildings and structures with their functional purpose, reducing the risk of harm to health, property of individuals or legal entities, state or municipal property and the environment.
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Zhang, Zhi Jun. "Research on the Specialization and Theory of Building Engineering." Advanced Materials Research 989-994 (July 2014): 5472–75. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.5472.
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Architectural engineering, also known as building engineering, is the application of engineering principles and technology to building design and construction. Definitions of an architectural engineer may refer to an engineer in the structural, mechanical, electrical, construction or other engineering fields of building design and construction; a licensed engineering professional in parts of the United States; in informal contexts, and formally in some places, a professional synonymous with or similar to an architect. Structural engineering involves the analysis and design of physical objects (buildings, bridges, equipment supports, towers and walls). Those concentrating on buildings are responsible for the structural performance of a large part of the built environment and are, sometimes, informally referred to as “building engineers”.
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McKevitt, W. E. "Proposed Canadian code provisions for seismic design of elements of structures, nonstructural components, and equipment." Canadian Journal of Civil Engineering 30, no. 2 (April 1, 2003): 366–77. http://dx.doi.org/10.1139/l02-069.
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Proposed code provisions for the seismic design of elements of structures, nonstructural components, and equipment are presented. In these provisions a new format is introduced which gives a consistent treatment for all elements and components, architectural, mechanical, and electrical. For the first time, soil effects are included in the provisions, which also seek to ensure that designers consider the interrelationship of the nonstructural components and differential displacements within the building structure. The proposed force equation is based on a uniform hazard spectrum approach with force modification factors. Specified force levels are based on data from instrumented buildings recorded during recent earthquakes. Updated requirements for connection design specify forces that are consistent with component design forces. New element and component categories are provided in an expanded table of elements of structures, nonstructural components, and equipment. To assess the impact of the proposed provisions on component design at various locations across the country, calculations are presented for typical multistorey buildings in a number of Canadian cities.Key words: seismic design, elements of structures, nonstructural mechanical electrical architectural components.
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I. D. Bennetts and I. R. Thomas. "Designing Against Fire." Electronic Journal of Structural Engineering, no. 1 (January 1, 2007): 9–21. http://dx.doi.org/10.56748/ejse.621.
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This paper considers the design of buildings for fire safety. It is found that fire and the associated effects on buildings is significantly different to other forms of loading such as gravity live loads, wind and earthquakes and their respective effects on the building structure. Fire events are derived from the human activities within buildings or from the malfunction of mechanical and electrical equipment provided within buildings to achieve a serviceable environment. It is therefore possible to directly influence the rate of firestarts within buildings by changing human behaviour, improved maintenance and improved design of mechanical and electrical systems. Furthermore, should a fire develops, it is possible to directly influence the resulting fire severity by the incorporation of fire safety systems such as sprinklers and to provide measures within the building to enable safer egress from the building. The ability to influence the rate of fire starts and the resulting fire severity is unique to the consideration of fire within buildings since other loads such as wind and earthquakes are directly a function of nature. The possible approaches for designing a building for fire safety are presented using an example of a multi-storey building constructed over a railway line. The design of both the transfer structure supporting the building over the railway and the levels above the transfer structure are considered in the context of current regulatory requirements. The principles and assumptions associated with various approaches are discussed.
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Abramkina, Darya. "Noise from mechanical ventilation systems in residential buildings." E3S Web of Conferences 457 (2023): 02007. http://dx.doi.org/10.1051/e3sconf/202345702007.
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Modern people spend up to 90% of their time indoors. Therefore, the research aimed to identify noise sources from engineering equipment, and developing recommendations for their elimination was an urgent scientific task. The paper considers the problem of noise pollution from mechanical ventilation systems in residential buildings. One of the most common errors in conducting acoustic calculations is the exclusion of noise generated by regulating devices, which significantly contribute to the final sound pressure levels at the outlet of the ventilation grate. The results of field studies are presented; they prove the need to normalize permissible noise levels in non-residential premises of an apartment and develop a legislative framework for measuring noise in hybrid ventilation systems. Practical recommendations for designing exhaust ventilation systems with a prefabricated vertical duct have been developed. It has been found that the replacement of throttle valves with iris diaphragms and the installation of silencers on prefabricated channels and apartment withdrawals, given the influence of the vortex zone from control devices, reduce the overall noise level from the ventilation system.
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Siry, Joseph M. "Air-Conditioning Comes to the Nation's Capital, 1928–60." Journal of the Society of Architectural Historians 77, no. 4 (December 1, 2018): 448–72. http://dx.doi.org/10.1525/jsah.2018.77.4.448.
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The classical architecture of Washington, D.C., has received much historical attention, but little attention has been paid to the mechanical systems that made these buildings habitable in the capital city's notoriously hot and humid summer climate. In Air-Conditioning Comes to the Nation's Capital, 1928–60, Joseph M. Siry describes how comfort air-conditioning first appeared in the U.S. Capitol building, in the chambers of the House of Representatives and the Senate, in 1928–29. From the 1930s on, air-conditioning systems were extended to the whole of the Capitol, the Senate and House office buildings, the Federal Triangle, and beyond. All of these projects involved the integration of equipment for heating, ventilating, and cooling into the spatial and structural forms of these mostly classical buildings. Air-conditioning had major implications for the annual operations of Congress and the efficiency of federal workplaces. This account advances the historiography of mechanical systems in modern architecture.
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Bugaevskii, G. N., and A. Yu Stepanyuk. "An experimental study of the reaction of buildings and equipment to mechanical action." Journal of Mathematical Sciences 82, no. 3 (November 1996): 3463–67. http://dx.doi.org/10.1007/bf02362666.
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Shooshtari, M., M. Saatcioglu, N. Naumoski, and S. Foo. "Floor response spectra for seismic design of operational and functional components of concrete buildings in Canada." Canadian Journal of Civil Engineering 37, no. 12 (December 2010): 1590–99. http://dx.doi.org/10.1139/l10-094.
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It has been observed during previous earthquakes that the damage to operational and functional components of buildings often result in more injuries, fatalities and property damage than those inflicted by structural damage. Operational and functional components of a building include architectural components, mechanical and electrical equipment, as well as building contents. A rational approach to designing these elements against seismic excitations involves the use of floor design spectra. The development of such design spectra for buildings in Canada constitutes the objective of the paper. This objective was achieved by conducting comprehensive analyses of selected reinforced concrete buildings, with different lateral force resisting systems and building heights, under code compatible earthquake records for an eastern and a western Canadian city. It was observed that the floor response was significantly amplified, especially for buildings with short periods. Generally, the higher floors showed higher amplifications with differences in spectra between the floors being more pronounced in low-rise buildings and shear wall buildings with short fundamental periods. The results provided a large volume of data to generate floor response spectra for the design of operational and functional components of buildings in Canada. The details of the approach and the design spectra are presented in the paper.
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Fenglei Zu and Cheuk Ming Mak. "Estimation of Best Mounting Positions for Vibratory Equipment in Buildings." Journal of Vibration and Control 17, no. 2 (September 23, 2010): 301–10. http://dx.doi.org/10.1177/1077546309360055.
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Csontos, Györgyi. "Using Passive Energy Systems in Ecofarm Architecture." YBL Journal of Built Environment 1, no. 1 (July 1, 2013): 39–58. http://dx.doi.org/10.2478/jbe-2013-0003.
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Abstract The history of eco (organic) farming in Hungary has begun in 1983. Currently, approx. 2% of the agricultural area is managed this way. This research gives a survey on the architectural backgrounds of this specific land management type. Sustainability and energy conservation have brought along a new demand in the construction industry, including design and operation of agricultural buildings: the usage of energy efficient, environmentally friendly and preferably renewable energy based building alternatives. Among the energy-saving solutions we have to emphasize those passive systems in particular, which use the natural conditions (sunlight, shading, ventilation, gravity, etc.) on their own, without the help of mechanical equipment, and achieve energy efficiency by placing and structuring technological buildings accordingly.
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Hu, Jun, and Huai Wen Hu. "The Key Technology Research of Building Automation System." Applied Mechanics and Materials 203 (October 2012): 125–29. http://dx.doi.org/10.4028/www.scientific.net/amm.203.125.
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Contemporary building automation system (BAS) is realize automatization control and management system through to the modern advanced computer technology, communication technology and control technology, and other comprehensive utilization,which can realize the intelligent buildings all mechanical and electrical equipment and the energy equipment of the united network control connection, so as to achieve the whole building environment system of monitoring and management, to it’s best for people to create a comfortable safety, high efficiency and energy saving life environment. In this paper, there’s a deep discussions of the building automation system of composition, development and the present situation; and the key technology of the present situation and development prospects, and we set a plan based on the technology of building automation system LonWorks solutions, and expounds the concrete realization of key technologies of the system, based on the development of the host general much input/output intelligent node module.
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Wang, Zheng, Mark B. Luther, Mehdi Amirkhani, Chunlu Liu, and Peter Horan. "State of the Art on Heat Pumps for Residential Buildings." Buildings 11, no. 8 (August 14, 2021): 350. http://dx.doi.org/10.3390/buildings11080350.
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Heat Pumps are becoming one of the most considered mechanical conditioning equipment in our buildings. While they are popular, there appears to be quite a vast range of system types and applications in building conditioning. This paper primarily reviews the literature on heat pumps, the various types, and the consideration of design end uses. The fact that there are different energy sources for heat pumps is considered, as well as the different sinks in which energy is stored or dissipated. It is evident that advanced heat pump systems cater well to the use of renewable energy resources. Therefore, in the move towards net-zero energy building operation, the correct selection of a heat pump can help to increase self-consumption of solar PV generation and even make use of direct solar energy heating. This paper reviews the technologies for heat pump selection, application, and design for residential buildings.
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Drake, Richard M., and Robert M. Walter. "Design of Structural Steel Pipe Racks." Engineering Journal 47, no. 4 (December 31, 2010): 241–52. http://dx.doi.org/10.62913/engj.v47i4.991.
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Pipe racks are structures in petrochemical, chemical and power plants that are designed to support pipes, power cables and instrument cable trays. They may also be used to support mechanical equipment, vessels and valve access platforms. Pipe racks are non-building structures that have similarities to structural steel buildings. The design requirements found in the building codes are not clear on how they are to be applied to pipe racks. Several industry references exist to help the designer apply the intent of the code and follow expected engineering practices. This paper summarizes the building code and industry practice design criteria, design loads and other design consideration for pipe racks.
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Taly, N. "The Whittier Narrows, California Earthquake of October 1, 1987—Performance of Buildings at California State University, Los Angeles." Earthquake Spectra 4, no. 2 (May 1988): 277–317. http://dx.doi.org/10.1193/1.1585476.
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The Whittier Narrows earthquake (Richter Magnitude 5.9), which struck Southern California in the morning of October 1, 1987, caused some $20.5 million damage to various engineered buildings at California State University, Los Angeles and the death of a student due to a falling precast concrete panel. Peak ground acceleration of 0.39 g and a building response of 0.48 g were recorded in one of the affected buildings. The damage was both structural (cracking of reinforced concrete beams, columns and shear walls) and non-structural (cracked plaster and partition walls, dislodged and broken ceiling tiles, lights and other fixtures, damage to the science, computer and mechanical equipment and to utilities). A fire broke out in one chemistry laboratory and toxic combinations of chemicals were created by the spills in another chemistry laboratory. Shaking from the earthquake also aggravated existing friable asbestos contamination, forcing closure of one and portions of other buildings.
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Sui, Qian, and Chong Jie Wang. "Analysis of the Application of Double Envelope Enclosure in the Energy-Saving Design of High-Rise Buildings." Applied Mechanics and Materials 361-363 (August 2013): 352–56. http://dx.doi.org/10.4028/www.scientific.net/amm.361-363.352.
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This paper analyzes architectural concept of the use of double envelope enclosure, and expounds the advantages of the energy efficiency in the construction of double-envelope enclosure. After parsing the key points of the high-rise building energy efficiency design, which leads to the use of double envelope enclosure in the energy-saving design of high-rise buildings. Including the thermal insulation of double doors and windows which reduce the energy consumption of the air conditioning equipment; the ventilation ability of double-envelope enclosure which reduce the power consumption of mechanical ventilation; thermal insulation and sound insulation performance of double-envelope floor and roof which improve the indoor comfort. As a result, the use of double envelope enclosure in the energy-saving design of high-rise buildings is worthy of promotion.
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Zhao, Yanhua, Wei Meng, Peifu Wang, Dongqing Qian, Wei Cheng, and Zhongqing Jia. "Research Progress of Concrete 3D Printing Technology and Its Equipment System, Material, and Molding Defect Control." Journal of Engineering 2022 (September 20, 2022): 1–22. http://dx.doi.org/10.1155/2022/6882386.
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The traditional construction technology not only has environmental friendly problems such as noise and dust but also has resource-saving problems such as large template quantity and low construction accuracy. In addition, the traditional construction technology has an insurmountable technical bottleneck in the construction of special-shaped buildings. Building 3D printing technology can effectively overcome many problems existing in traditional construction technology and provide unlimited possibilities for the construction of special-shaped buildings. Concrete 3D printing technology is one of the most important technical categories of building 3D printing. In this study, the research status and progress of concrete 3D technology were reviewed from the aspects of equipment system, materials, defect control, and application scenarios. On this basis, the development foreground was prospected.
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Ilyich, Fedyukov, and Chernova Sergeyevna. "Method for express diagnostics of resonant properties of wood aged in buildings." Journal of Applied Engineering Science 18, no. 4 (2020): 510–14. http://dx.doi.org/10.5937/jaes0-27078.
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New method and technical solutions for nondestructive express diagnostics and targeted selection of spruce wood with unique dendro-acoustic properties aged in buildings are presented. Flow charts of equipment and ways of its application to identify resonant properties of wood in different parts of a building, including the walls made of round timbers, ceiling and floor boards are given. The proposed ways of wood quality diagnostics in buildings has its advantages over conventional methods.
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SKORUK, Oleg. "REINFORCEMENT OF CAVITY FLOOR SLAB STRUCTURES WITH METAL BEAMS AND REINFORCED FIBER CONCRETE." Building constructions. Theory and Practice, no. 12 (June 27, 2022): 115–25. http://dx.doi.org/10.32347/2522-4182.12.2023.115-125.
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The operation of buildings and structures is connected with the expansion of production capacities, technical re-equipment of existing enterprises, current repairs and a whole series of different factors that arise and different periods of their existence. All this leads to carrying out and carrying out work on strengthening individual elements or a building or structure as a whole to ensure their bearing capacity for design or new loads.Nowadays, among the construction structures that are installed in buildings, a significant amount of time is occupied by reinforced concrete elements of industrial sulfur production, respectively. The need to strengthen them arises in the process of operation not only during the reconstruction and technical re-equipment of buildings and structures, but also as a result of improper operation, local orgeneral overloads, corrosive or mechanical wear of the constituent elements of structures or buildings as a whole. All this leads to a decrease in nondestructive ability and as a result of the occurrence of pre-emergency or emergency situations.Also, elements that require reinforcement are located in operated buildings, where the implementation of any construction work is complicated and requires quick execution.The main traditional methods of strengthening structures are building up or increasing their crosssection due to the addition of new fragments or elements to them, the introduction of ties or sprengels with the creation of pre-tension, thearrangement of duplicating or supporting elements or the unloading of structures by their partial dismantling or disassembly.In the conditions of current production or operation of a building or structure, these methods of reinforcement cannot always be applied due to the compressed performance conditions, the heavy weight of the reinforcement structures, and thecomplexity of installation.The decision regarding the need to repair or strengthen building structures in order to restore or increase their bearing capacity and operational suitability is made on the basis of data obtained during their appropriate examination in accordancewith current normative documents, engineering investigations, as well as taking into account the results performed verification calculations.The scope and nomenclature of inspections and searches is determined depending on the technical condition, the degree of responsibility of the buildings (structures), the features of the planned measures for repair and strengthening.
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Zheng, Weicheng. "Analysis on the Mechanical Properties of Viscoelastic Damper and Its Application in Construction Engineering." Highlights in Science, Engineering and Technology 1 (June 14, 2022): 150–54. http://dx.doi.org/10.54097/hset.v1i.442.
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With the deepening of the structural vibration control technology and theory, all kinds of energy dissipation and vibration reduction equipment have been more and more used in engineering. Using SAP2000 software, the elastic-plastic time period before and after the installation of viscoelastic damper is calculated, and it is compared, which provides a useful example for the future application in high-rise buildings.
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Deng, Hua Feng, Qian Luo, Xian Fan Yuan, and Min Zhu. "Study on the Effect of Resistance Sliding Key Chamber Blasting Construction of a Hydropower Station on Adjacent Buildings." Advanced Materials Research 594-597 (November 2012): 2773–76. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.2773.
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In order to monitor and control the effect of blasting vibration on dam body, spillway overflow surface and mechanical and electrical equipment foundation at the excavation of resistance sliding key chamber, the fixed monitoring point scheme was used to monitor vibration speed of each point. According to the construction progress, a total of 44 times blasting vibration test were carried on, and data are integrity, which can accurately reflect the effect of resistance sliding key chamber excavation blasting on adjacent buildings. In blasting construction process, according to the analysis of monitoring data, the explosive dosage of single stage was adjusted, which effectively control the effect of blasting vibration. The results indicate that, in the process of resistance sliding key chamber blasting construction, particle vibration velocities of adjacent buildings such as dam body, spillway overflow surface, mechanical and electrical equipment foundation and etc. are in the velocity range of security vibration, which meets the requirements of design and specification, and real-time analysis of field monitoring guarantees the smooth completion of site construction.
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Wysocka, Monika. "Analysis of indoor air quality in a naturally ventilated church." E3S Web of Conferences 49 (2018): 00134. http://dx.doi.org/10.1051/e3sconf/20184900134.
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The quality of air in sacral buildings is an important factor that affects users. Church buildings are characterized by a specific microclimate, because they accommodate many people in short periods of time, which results in rapid changes in air quality. Sacral buildings usually only have natural ventilation through doors, return air inlets and window leaks, which can cause uneven distribution of fresh air. The aim of this article is to analyze the results of research on the basic parameters of air quality: carbon dioxide, relative humidity and air temperature in the church. The analysis carried out on research results allowed to state that the measured parameters of air quality - the concentration of carbon dioxide and the level of relative humidity significantly exceeded the standards recommendations. High level of air humidity was recorded at 75%. In the analyzed sacral building there is the need to improve air quality in terms of carbon dioxide and relative humidity. Ways of improving air quality, such as installation of mechanical ventilation, will help prevent damage to structures and equipment, and improve comfort of people in the church.
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Chen, Feifei, Yang Yang, Jing Li, and Aruomeng Tian. "Calculation and evaluation of building thermal energy consumption and carbon emissions based on BIM technology." Thermal Science 27, no. 2 Part A (2023): 1223–30. http://dx.doi.org/10.2298/tsci2302223c.
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In order to calculate the carbon emissions in the construction process to achieve low-carbon buildings and low-carbon construction, the author puts forward the calculation and evaluation of building thermal energy consumption and carbon emissions based on building information modeling (BIM) technology. The author first proposed the important value and application of BIM technology in energy consumption evaluation of green buildings, taking a gymnasium as an example, a carbon emission accounting system for building construction and installation process is established based on BIM technology, and the carbon emissions in building construction and installation process are calculated and analyzed. The results show that the carbon emission during the construction and installation of a gymnasium is 766300 tons, of which the carbon emission caused by building materials is 737200 tons, the carbon emission caused by mechanical equipment is 4500 tons, and that caused by office and living is 34500 tons, accounting for 94.90%, 0.59%, and 4.51%, respectively. In conclusion through data analysis, determine the largest carbon emission source in the construction process, and then propose targeted carbon emission reduction measures in the construction process of the construction industry.
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Qin, Fu Zhen, Hai Yan Song, Xiao Ling Liu, and Hai Chun Niu. "Design of Auto Lifting Control System Based on PLC." Applied Mechanics and Materials 548-549 (April 2014): 1003–6. http://dx.doi.org/10.4028/www.scientific.net/amm.548-549.1003.
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Lifting system is widely applied to different range because it is quite convenient and intelligent, such as high-rise buildings. In order to improve the reliability and equipment working efficiency of the automatic control system, programmable controller (PLC) as the core controller is properly used during the control system design in the paper. Through the mechanical working method, the software control is used instead of more complex relay-contactor control which can greatly improve the mechanical failure inspection and maintenance convenience.
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Delgoshaei, Parastoo, Mohammad Heidarinejad, and Mark A. Austin. "A Semantic Approach for Building System Operations: Knowledge Representation and Reasoning." Sustainability 14, no. 10 (May 11, 2022): 5810. http://dx.doi.org/10.3390/su14105810.
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Artificial intelligence is set to transform the next generation of intelligent buildings through the application of information and semantic data models and machine learning algorithms. Semantic data models enable the understanding of real-world data for building automation, integration and control applications. This article explored the use of semantic models, a subfield of artificial intelligence, for knowledge representation and reasoning (KRR) across a wide variety of applications in building control, automation and analytics. These KRR-enabled applications include context-aware control of mechanical systems, building energy auditing and commissioning, indoor air monitoring, fault detection and diagnostics (FDD) of mechanical equipment and systems and building-to-grid integration. To this end, this work employed the Apache Jena Application Programming Interface (API) to develop KRR and integrate it with some domain-specific ontologies expressed in the Resource Description Framework (RDF) and Web Ontology Language (OWL). The ontology-driven rules were represented using Jena rule formalisms to enable the inference of implicit information from data asserted in the ontologies. Moreover, SPARQL (SPARQL Query Language for RDF) was used to query the knowledge graph and obtain useful information for a variety of building applications. This approach enhances building analytics through multi-domain knowledge integration; spatial and temporal reasoning for monitoring building operations, and control systems and devices; and the performance of compliance checking. We show that existing studies have not leveraged state-of-the-art ontologies to infer information from different domains. While the proposed semantic infrastructure and methods in this study demonstrated benefits for different building applications applicable to mechanical systems, the approach also has great potential for lighting, shading and security applications. Multi-domain knowledge integration that includes spatial and temporal reasoning allows the optimization of the performance of building equipment and systems.
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Won, Dr Ik Jun, and Chol Su Ryu. "Research on Assembling Steel Tower on The Top of Skyscraper by Gradual Erection." International Journal of Architecture and Urbanism 7, no. 2 (September 2, 2023): 328–37. http://dx.doi.org/10.32734/ijau.v7i2.13515.
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The top surface of the hise rise buildings are very small for working space. The findings of this research is to clarify the scientific and technological problems to assemble big steel tower in different shapes on the top of the skyscrapers to the height of dozens of meters safely by using simple mechanical equipment including hoist, hydraulic jack by gradual erection method.
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Lv, Xiao Biao, and Zi Jian Liang. "Case Study of Three-Dimensional Optimization Design on Architectural MEP Based on BIM." Applied Mechanics and Materials 507 (January 2014): 177–81. http://dx.doi.org/10.4028/www.scientific.net/amm.507.177.
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MEP (Mechanical,Electrical,Plumping) includes vast amount of equipment types and pipelines in the integrated design, leading the coordination of MEP design optimization a major challenge for complex buildings. This document explains the technical processes and characteristics of the three-dimensional MEP design optimization based on BIM(Building Information Modeling), connected with the case of the integrated pipeline optimization design practice of a hospital building. Though establishing the BIM model of four-space underground pipeline network system in a hospital outpatient building, we carried out MEP collision checking, obtaining three-dimensional spatial information 102 collision points. Combined with manual screening we finally identified 67 valid point of conflict, for the construction of secondary pipeline network optimization design. In particular, the suggestion on the promotion and application of BIM-based building MEP design to municipal pipeline network in the future is proposed.
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Moesl, Martin. "Energy-efficient Optimization of Life-cycle Costs Based on BIM." Journal of Civil Engineering and Construction 12, no. 3 (August 15, 2023): 142–51. http://dx.doi.org/10.32732/jcec.2023.12.3.142.
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This article deals with a methodology for the economic development of energy-efficient buildings from an early planning or development phase based on building information modelling (BIM). In this context, both geometrically and energetically relevant parameters of a building are derived from a digital building model, already in the early phase of a project. The subsequent definition of building components for the building envelope and the performance of an energy demand calculation provides the basis for the selection of reference buildings suitable for the respective application. This enables the determination of practical costs, which include both annuity costs and total costs arising in the life cycle of the building for the cost groups of the building structures and the technical building equipment. By taking a holistic view of all costs and focusing specifically on energy efficiency, the methodology presented in this article can be used to identify both ecological and economic advantages for planning in the early stages of a project. By incorporating energy efficiency and economic efficiency, a sustainable and successful project can be achieved.
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Karanafti, A., and T. Theodosiou. "Analysing the existing dynamic insulation technologies focusing on buildings’ renovation – A review." IOP Conference Series: Earth and Environmental Science 1196, no. 1 (June 1, 2023): 012011. http://dx.doi.org/10.1088/1755-1315/1196/1/012011.
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Abstract Towards the achievement of zero-emission buildings, conventional envelope solutions have started to become outdated. The concept of Dynamic thermal insulation is an innovative approach, still under development, that attracts a continuously and fast growing scientific and research interest, mainly due to its perfect alignment with the targets of a zero-carbon future. The aim of this study is to investigate a variety of such systems that are capable to adjust the envelope’s thermal resistance based on the building’s needs. The study follows a two-levelled categorization approach. Initially, the classification focuses on whether an assembly switches or varies its thermal properties within a range, whilst the operating principle is used for further categorization. The systems under investigation, are further categorized based on their adequacy as a measure for the implementation on existing buildings’ energy retrofit. This innovative categorization takes into consideration properties like operational and control complexity, mechanical equipment requirements, construction simplicity, cost, etc. The results reveal great potential for this technology and indicate a need for further investigation on issues related to their sustainability potential in new or in existing buildings.
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Uras, R. A. "Use of a Viscoelastic Model for the Seismic Response of Base-Isolated Buildings." Journal of Pressure Vessel Technology 118, no. 3 (August 1, 1996): 374–83. http://dx.doi.org/10.1115/1.2842203.
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Due to recent developments in elastomer technology, seismic isolation using elastomer bearings is rapidly becoming an acceptable design tool to enhance structural seismic margins and to protect people and equipment from earthquake damage. With proper design of isolators, high-energy seismic input motions can be transformed into low-frequency, low-energy harmonic motions, and the accelerations acting on the isolated building may be significantly reduced. Several alternatives exist for the modeling of the isolators. This study is concerned with the use of a viscoelastic model to predict the seismic response of base-isolated buildings. The in-house finite element computer code, SISEC has been modified to incorporate a viscoelastic spring element, and several simulations are performed. Then, the computed results have been compared with the corresponding observed data recorded at the test facility.
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Gallipoli, Maria Rosaria, Tony Alfredo Stabile, Giulia Massolino, Marco Mucciarelli, Nasser Abu Zeid, Leonardo Chiauzzi, Samuel Bignardi, and Alessandro Rebez. "Structural health monitoring of the Ferrara University before and after the 2012 Emilia (Italy) earthquake, and after the damage repairs." Structural Health Monitoring 19, no. 3 (August 5, 2019): 838–53. http://dx.doi.org/10.1177/1475921719866439.
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In this article, a framework of building monitoring is developed and transient and permanent variations of the fundamental period of vibration caused by both damage and repair interventions are investigated. The buildings of the University of Ferrara (Emilia-Romagna Region, Northern Italy), struck by the 2012 Emilia seismic sequence, were monitored using both temporary and permanent equipment: the first one to perform ambient vibration tests and the second one to implement permanent real-time monitoring for earthquake recording. Three on-demand ambient vibration tests were performed at each floor of the buildings: the first dataset was acquired a few months before the mainshock occurred on 20 May 2012 ( ML = 5.9, 6.8 km depth and 30 km epicentral distance); the second was acquired right after the end of the sequence, when the building showed slight damage (degree 1 according to the European Macroseismic Scale 98); finally, the third dataset was acquired in 2016 after the repair intervention. The data analysis clearly documented the permanent drop of the first vibration frequency as a symptom of the damage and its partial recovery that followed the repairs. The permanent real-time monitoring system, despite the fact that it was implemented using low-cost sensors, provided an insight into the intra-event frequency variation, allowing in turn a preliminary damage assessment.
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Eshghi, Sassan, and Mehran S. Razzaghi. "Performance of Industrial Facilities in the 2003 Bam, Iran, Earthquake." Earthquake Spectra 21, no. 1_suppl (December 2005): 395–410. http://dx.doi.org/10.1193/1.2098810.
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Several industries suffered minor to heavy damage during the 26 December 2003 Bam earthquake. The damage sustained by electrical and mechanical equipment, special structures (e.g. ongrade steel tanks), industrial buildings, and nonstructural and secondary components caused several industrial complexes to be put out of commission. Damage to industrial facilities not only caused direct losses, but several indirect economic and social impacts also occurred due to the work stoppage at industries.
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Vrbová, Pavla, and Lenka Prokopová. "The Use of Thin-Layer Insulation Material in Technical Installations in Building Reconstructions." Key Engineering Materials 932 (September 20, 2022): 253–59. http://dx.doi.org/10.4028/p-1c541c.
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This article is a part of a scientific work dealing with the research of thermal insulation properties of thin-layer insulation material made of hollow glass-ceramic microspheres in relation to technical equipment of buildings. Until now, there has been a lack of scientific studies describing the effectiveness of thermal insulation properties of thin-layer insulation materials on distribution systems or technical equipment. Thin-layer thermal insulation materials may have a great potential for use in building reconstructions and associated reconstruction of distribution systems, where there is often insufficient space for additional conventional thermal insulation and where energy savings of the whole system need to be addressed. For this reason, a series of laboratory measurements were made and in this particular case, the insulation material was applied in a 2 mm layer to the heat storage tank and the heat losses of two models of the heat storage tank (without insulation and with thin-layer insulation coating) were compared. In addition, for a more comprehensive view of the issue, the two models were compared in two situations that may occur in practice, which are the cases of free and forced convection.
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Harun, Hasbullah. "Study of Energy Performance in Malaysian Public Hospital using Power Query." Information Management and Business Review 15, no. 4(SI)I (November 12, 2023): 394–403. http://dx.doi.org/10.22610/imbr.v15i4(si)i.3614.
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In 2016, the Ministry of Health (MOH), Malaysia, initiated a sustainable program that includes activities for sustainable energy management at all 145 buildings under the MOH. The focus of the sustainable energy management program is to target these buildings to reduce their annual energy consumption by 10% by 2018. The target implementation of a sustainable energy management program includes achieving 3-star EMGS certification within 5 years. By December 2022, 135 have achieved two-star certification with the requirement to achieve at least 5% energy consumption savings. By 2019, the 118 buildings that embarked on EMGS certification had achieved 22.62% energy consumption savings. District and specialist hospitals achieved 23%–24% savings in 2019. The largest energy consumption in MOH buildings is for room cooling, which is contributed by air conditioning and mechanical ventilation (ACMV) equipment. The implementation of a sustainable energy management program has contributed to energy cost savings of RM21 million per year to MOH energy bills in 2019.
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Horn, Valéria V., Annamária Dudás, and Anita Terjék. "The Role of Façades in Solar Energy Utilization." Buildings 10, no. 11 (November 19, 2020): 209. http://dx.doi.org/10.3390/buildings10110209.
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During the summer, the environmental impact of building operations can be reduced by optimizing ventilation and preventing heat from entering the building. Shades are used to create a comfortable temperature state in interiors without operating mechanical equipment or using low-power systems. The most significant factor in reducing energy consumption would be if the spatial delimitation of buildings utilizes solar energy in a passive or active way. At the same time, limiting the energy entering through windows reduces the temperature of interiors and the amount of energy used for cooling; thus, the phenomenon of the urban heat island would be less exacerbated. In the case of existing historical buildings, there are limited possibilities to reduce the energy consumption of the building and to protect the buildings against excessive summer heating, especially in connection with the structural appearance of the doors and windows on the façade. This paper presents the preparation of a large-scale reconstruction project based on a newly developed combined window that can significantly reduce indoor summer overheating. Designing steps of the complex retrofitting of a traditional box-type window are highlighted based on the results of closely connected literature pertaining to thermal, ventilation, shading, and acoustical phenomena. The result is a detailed structural and technological design of the reconstruction for the historical window in a combined way, as the frame, glazing, ventilation, and shading are simultaneously developed and calculated approximately; moreover, active shading is integrated. One aim of this desktop study was to demonstrate that in the case of historical buildings, it is possible and necessary to reduce heat losses during the heating season and to minimize the risk of summer overheating, and to show that the surface of the façade could be converted into an energy producer.
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Su, Liang-Shen, Chi-Hao Lin, and Kuo-Ching Chen. "On the response of eccentric non-structures subjected to horizontal oscillation." Journal of Mechanics 38 (2022): 560–67. http://dx.doi.org/10.1093/jom/ufac040.
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ABSTRACT In contrast to building structures, little attention has been paid to the seismic performance of non-structures in buildings, especially of eccentric non-structures. This paper attempts to explore the rocking and overturning of eccentric blocks, which could be the equipment or non-structural components in buildings, subjected to horizontal vibration. In the present study, a non-structure is regarded as a rigid block with tunable mass eccentricity, and the contact friction is assumed to be large enough to prevent the rigid block from sliding. A free shaking test is first carried out to determine the value of the coefficient of restitution. Force oscillations are then investigated to determine the critical time and acceleration when the eccentric blocks fall down under the swept-frequency oscillation. Finally, an actual acceleration from the seismic records is executed on each of the eccentric blocks to measure and to explore the corresponding toppling probability. It is found that the toppling of blocks is not necessarily linked to the magnitude of the peak ground acceleration.
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López-Rebollo, Jorge, Xavier Cárdenas-Haro, Juan Pablo Parra-Vargas, Kevin Narváez-Berrezueta, and Julver Pino. "Improvement of Mechanical Properties of Compressed Earth Blocks with Stabilising Additives for Self-Build of Sustainable Housing." Buildings 14, no. 3 (March 1, 2024): 664. http://dx.doi.org/10.3390/buildings14030664.
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Earth building technologies are increasingly being used to promote a natural and sustainable construction model and to empower self-building in resource-limited areas. This work focuses on investigating the use of different types of stabilising additives in compressed earth blocks (CEBs). To this end, empirical studies and laboratory analyses of earth samples taken from different sites in Ecuador were combined. Once the most suitable earth for use as a building material was determined, four types of CEBs were produced using equipment designed ad hoc to encourage self-building: earth-based, fibre additives, cementitious additives, and additives of other origin. The panels were characterised by means of compression tests to analyse their mechanical behaviour, obtaining the most promising results for the additivated samples with the highest percentage of cement and for the sample containing ground reeds, with a compressive strength of 3.3 MPa and 0.7 MPa, respectively. These samples were then subjected to more extensive tests using digital image correlation to analyse their full field strains and cracks, where the samples stabilised with cement showed a more homogeneous and consistent behaviour. Finally, an economic and comparative study with conventional construction systems was carried out to demonstrate the feasibility of using the proposed earth materials for cleaner and more economical buildings, mainly due to cost savings and lower pollution in terms of transport when using local resources.
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Lee, Heow Pueh, Zhaomeng Wang, and Kian Meng Lim. "Assessment of noise from equipment and processes at construction sites." Building Acoustics 24, no. 1 (November 24, 2016): 21–34. http://dx.doi.org/10.1177/1351010x16678218.
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Noise pollution from construction sites has become a major problem for major cities with the continued rapid development as well as redevelopment of cities. These construction sites, in particular for new subway systems, are often near to residential and commercial buildings. A better understanding and characterization of noise profiles will be required for project management and planning as well as environmental impact assessment. In this study, instead of using the typical type 1 sound level meters for the measurement of noise profiles emitted from construction equipment and processes commonly done in construction industry, we attempt to characterize the noise profiles of common construction equipment at their respective noise source using an Acoustic Array or Acoustic Camera. The study also highlighted the significant presence of low-frequency noise at construction sites for some construction equipment and processes. This may have some implications for the design of noise barriers at construction sites.
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Kuzmin, V. A., L. S. Fogel, A. Sukhinin, S. A. Makavchik, D. A. Orekhov, and L. I. Smirnova. "ESTIMATION OF EFFICIENCY OF DISINFECTION OF SURFACES OF EQUIPMENT WITH “FUMIOD” DRUG IN ANIMAL AND PIG BREEDING SPACES DURING SANITARY BREAK." International bulletin of Veterinary Medicine 3 (2020): 94–99. http://dx.doi.org/10.17238/issn2072-2419.2020.3.94.
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The purpose of the work is to evaluate the effectiveness of preventive disinfection of surfaces of technological equipment with fumigation aerosols of the “Fumiyod” drug in livestock and pig premises during the san-itary break. The work was carried out in livestock and pig farms of the Volosovsky district of the Leningrad region. Disinfection of technological equipment in experimental facilities for growing calves and piglets dur-ing the sanitary rupture (after the mechanical cleaning and washing of equipment with hot water + 600С) was carried out by fumigation aerosols of the “Fumiyod” using iodine blocks by sublimation for 3 hours after expo-sure. Control was provided by similar facili-ties after mechanical cleaning and washing of equipment with hot water + 600С. Test objects – metal surfaces , concrete, tile, wood, rubber, metlakh tiles. The effective-ness of disinfection of surfaces of technolog-ical equipment was evaluated by test of the bacteria of the Escherichia coli group (BGEC) and staphylococcus. To isolate BGEC, KODA medium, or Endo agar, was used to indicate staphylococci — yolk-salt agar (6.5% NaCl). In an experiment in live-stock and pig breeding facilities, for the con-trol of the quality of disinfection for the iso-lation of BGEC, the “Fumiyod” effective disinfection of smooth surfaces at a concen-tration of 0.10 g / m3 for 1 h, rough surfac-es, respectively, 0.20 g / m3 for 1 hour for the isolation of staphylococci, respectively, in a concentration of 0.1-0.20 g / m3 of smooth and rough surfaces at an exposure of 3 hours were carried out. For the control (after washing the equipment with hot water and without disinfection) in washes from smooth and rough surfaces of equipment in pig breeding and livestock buildings BGEC were allocated in 70%; staphylococci, re-spectively, in 100% and 95% of the samples.
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عبد الجليل علي العبيدي. "Study and Analysis of an Electrical Energy Saving Strategies and Gas Emissions Reduction for a Private Hospital Building in Yemen." Journal of Science and Technology 25, no. 2 (March 11, 2021): 73–96. http://dx.doi.org/10.20428/jst.v25i2.1753.
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Hospital buildings consume high energy more than other buildings in the commercial buildings sector as there is a continuous demand for power supplies. Energy consumption and greenhouse gas emissions can be reduced in the buildings sector by using various energy saving methods. In this study, on-sight visiting for energy audit has been conducted at a private hospital in Sana’a - Yemen to record all data relevant to energy consumption by equipment, machines, and all other mechanical systems. Different energy saving scenarios were using to estimate the potential of energy saving such as using high-efficiency lighting devices, raising the thermostat set point temperature for air conditioners, using high-efficiency motors (HEM) with a different load ratio, and using variable speed motors (VSM). Results indicated that energy consumption for the hospital was 4,061.8 Megawatthourper year whereas energy intensity was 232 kWh/m2. It is found that about 150.32 megawatt-hours of annual energy saving is achieved by using HEM and 689.72 Megawatt-hour per year by raising the set point of air conditioners thermostat to 26 °C. In addition, 1513 megawatt-hours per year of energy can be saved by reducing the VSM speed to 60% whereas95.8 megawatt-hours per year is estimated by adopting 100% load of HEM. The economic study of energy saving strategies was found that the use of HEM is not economically viable, while the use of VSM with large capacity motors is better from economic and environmental points of view.
Keywords: Hospital building, energy consumption, Energy index, Energy saving, Emission reduction
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عبد الجليل علي العبيدي. "Study and Analysis of an Electrical Energy Saving Strategies and Gas Emissions Reduction for a Private Hospital Building in Yemen." Journal of Science and Technology 25, no. 2 (March 11, 2021): 73–96. http://dx.doi.org/10.20428/jst.25.2.4.
Full textAbstract:
Hospital buildings consume high energy more than other buildings in the commercial buildings sector as there is a continuous demand for power supplies. Energy consumption and greenhouse gas emissions can be reduced in the buildings sector by using various energy saving methods. In this study, on-sight visiting for energy audit has been conducted at a private hospital in Sana’a - Yemen to record all data relevant to energy consumption by equipment, machines, and all other mechanical systems. Different energy saving scenarios were using to estimate the potential of energy saving such as using high-efficiency lighting devices, raising the thermostat set point temperature for air conditioners, using high-efficiency motors (HEM) with a different load ratio, and using variable speed motors (VSM). Results indicated that energy consumption for the hospital was 4,061.8 Megawatthourper year whereas energy intensity was 232 kWh/m2. It is found that about 150.32 megawatt-hours of annual energy saving is achieved by using HEM and 689.72 Megawatt-hour per year by raising the set point of air conditioners thermostat to 26 °C. In addition, 1513 megawatt-hours per year of energy can be saved by reducing the VSM speed to 60% whereas95.8 megawatt-hours per year is estimated by adopting 100% load of HEM. The economic study of energy saving strategies was found that the use of HEM is not economically viable, while the use of VSM with large capacity motors is better from economic and environmental points of view.
Keywords: Hospital building, energy consumption, Energy index, Energy saving, Emission reduction
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Nikfar, Farzad, and Dimitrios Konstantinidis. "Peak Sliding Demands on Unanchored Equipment and Contents in Base-Isolated Buildings under Pulse Excitation." Journal of Structural Engineering 143, no. 9 (September 2017): 04017086. http://dx.doi.org/10.1061/(asce)st.1943-541x.0001811.
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