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Journal articles on the topic 'Metal Ceiling'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

Alekseev, P. A. ,., and A. V. Trofimov. "Calculation vaulted floors of brick on metal beams «Sectors of the thick-walled ring» method." STRUCTURAL MECHANICS AND ANALYSIS OF CONSTRUCTIONS 303, no. 4 (2022): 2–7. http://dx.doi.org/10.37538/0039-2383.2022.4.2.7.

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Currently beam vaulted floors of brick are not designed, but most of the existing buildings with this type of ceiling need to be reconstructed. Designers are faced with the problem of the lack of a normative method for calculating vaulted ceilings, which would take into account the composite action of beams with vaulted filling. In this regard, in order to determine the category of the technical condition of the ceilings, the checking calculation is made for a hinged metal beam with uniformly distributed load, which underrates the bearing capacity of the floor. In accordance with the results o

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2

Kloiber, Michal, Jan Válek, Jiří Bláha, and Jitka Čechová. "Reconstruction of a Baroque Open Beam Ceiling Based on Material Analysis." Advanced Materials Research 688 (May 2013): 10–19. http://dx.doi.org/10.4028/www.scientific.net/amr.688.10.

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Reconstruction of a ceiling in the north-eastern wing of a former water fortress in Jeseník was carried out during the repair of its roof structure and replacement of the roof. The most damaged parts of the bearing ceiling beams were removed and partially replaced with new timber in the 70s of the 20th C. The way the work was carried out corresponded to the methods and approaches of the cultural heritage protection of that time. The replacement of damaged heads of ceiling beams with new timber that was fitted without connection to the original ceiling beams and only simply hanged on a metal gi

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3

Albayrak, Uğur, and Mustafa Halûk Saraçoğlu. "Analysis of Regular Perforated Metal Ceiling Tiles." International Journal of Engineering and Technology 10, no. 6 (2018): 440–46. http://dx.doi.org/10.7763/ijet.2018.v10.1099.

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4

Lin, Jui-Yen, Yaw-Shyan Tsay, and Pin-Chieh Tseng. "Development of Folded Expanded Metal Mesh with Sound Absorption Performance." Applied Sciences 11, no. 15 (2021): 7021. http://dx.doi.org/10.3390/app11157021.

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Reverberation time (RT) is an important factor affecting the quality of indoor acoustics. Using sound-absorbing materials is one method for quickly and effectively controlling RT, and installation in the ceiling is a common location. Sound-absorbing ceilings come in many forms, with light steel joist ceilings commonly used in office spaces, classrooms, and discussion rooms. Light steel joist ceilings are often matched with sound-absorbing materials such as gypsum board, mineral fiberboard, rock wool, and coated glass wool, but such materials may have durability and exfoliation problems. Theref

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Renita, Renita, Tri Harso Karyono, and Djoko Santoso. "THE INFLUENCE OF ROOF COVER MATERIAL ON GABLE MODEL TO CLIMATE PARAMETERS Case Study :Rumah Instan Sederhana Sehat (RISHA), PuslitbangPermukiman, Bandung." International Journal on Livable Space 1, no. 1 (2016): 39. http://dx.doi.org/10.25105/livas.v1i1.4707.

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<p align="left"><strong><em>Abstract</em></strong><strong><em></em></strong></p><p><em>A roof should be able to prevent and reduce the radiation heat. It is more recommended if it gives a good effect in both prevention and reduction of heat. Through this research, the author wanted to know the influence of the roof covering material to gable roof style towards the climate parameters, such as temperature of humidity and heat radiation. Gable roof style is considered as more effective rather than others traditional roof styl

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6

Criz-Ramirez, S. Rolando, Yasushi Mae, Yuusuke Ishizuka, Tomohito Takubo, and Tatsuo Arai. "2P1-B13 Detection of Screws on Metal Ceiling Structures for Dismantling Interior of Building." Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2008 (2008): _2P1—B13_1—_2P1—B13_4. http://dx.doi.org/10.1299/jsmermd.2008._2p1-b13_1.

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7

Aan, Sudarwanto, Dwi Wulandari Novita, Nugroho Bambang, Arif Jati Purnomo Muhammad, Cahyana Agung, and Nugroho Adi. "Batik Motif Development for Decorative Elements on Metal Ceiling." International Journal of Social Science And Human Research 06, no. 08 (2023): 5251–56. https://doi.org/10.5281/zenodo.8302582.

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Batik is a traditional art developed in Java. Batik has a variety of motifs and it is exquisite. One of the valuable sources on batik is classical batik, which developed in several places in Java before Indonesian independence. Besides being picturesque, it also has values guided by the teachings of Javanese culture which are contained in its motifs. Then batik motifs are used in this study as the basis for development in the manufacture of contemporary decorative designs. In this study, the development of batik motifs was redesigned from classic batik motifs which were then applied to metal p

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8

Bogatu, Dragos-Ioan, Eleftherios Bourdakis, Ongun Berk Kazanci, and Bjarne W. Olesen. "Experimental Comparison of Radiant Ceiling Panels and Ceiling Panels Containing Phase Change material (PCM)." E3S Web of Conferences 111 (2019): 01072. http://dx.doi.org/10.1051/e3sconf/201911101072.

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Two commercially available ceiling panels, one metal and one gypsum incorporating microencapsulated PCM were compared experimentally to determine their limitations and ability to provide an adequate indoor thermal environment. The experiments took place from February to May 2018 in a climate chamber at the Technical university of Denmark. In total, seven scenarios were evaluated, five with active cooling, where the flow rate and solar heat gains were varied, and two without. Results showed that according to EN 15251:2007, the RCPs maintained the best indoor thermal environment for 91% of occup

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9

Dougherty, Sean. "Baggage." UnderCurrents: Journal of Critical Environmental Studies 14 (January 1, 2005): 16. http://dx.doi.org/10.25071/2292-4736/40405.

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Great brown trunks with metal buckles, belts, train trunks, black leather and steel rivets, large round stamps: Austria, Munich, Bremen, Budapest. Piles of trunks and suitcases to the ceiling. Rooms of suitcases, bird-cages, baskets.

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10

Dita Pahang Putra, Nyoman, and M. Mudjahidin. "Value Engineering dalam Pembangunan Rusunawa." Jurnal Teknik Industri 10, no. 2 (2012): 173–79. http://dx.doi.org/10.22219/jtiumm.vol10.no2.173-179.

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Value engineering is done to make an effort to organize systematically and applying a technique that identifies the product function that aims to meet the required function with the lowest price. Analytical Hierarchy Process method is used in the analysis phase of work plan to choices alternative that is more objective based on several variables. In the chart of the breakdown cost model, 7 items of work have the highest cost, based on the work items was found 2 items of work that have the potential to do great engineering work that is the value of the walls and ceiling. The application of the

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11

Hryhorovskyi, P. E., O. V. Murasova, and I. M. Umanets. "STUDY OF LABOR COSTS OF PLASTERING SINIAT PLATO MULTISTART PLASTER STATION KALETA 5." Building production, no. 78 (February 26, 2025): 125–31. https://doi.org/10.36750/2524-2555.78.125-131.

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Abstract. The increase in the volume of mechanized plastering works in Kyiv and the high labor inten- sity require a study of the labor costs of mechanized plastering with the PLATУ MultiStart gypsum mix- ture of interior walls and ceilings of a residential building using the Kaleta ATWG-5 super plastering machine. The complex process of placing plaster coatings from the PLATУ MultiStart mixture consisted of the fol- lowing operations, for which fixed points of the beginning and end of the operation were established: surface preparation: cleaning the surface from dust, dirt, cutting off mortar

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12

Więckowski, Andrzej. "Błędy realizacyjne i awaria sufitu podwieszanego." Przegląd Naukowy Inżynieria i Kształtowanie Środowiska 28, no. 1 (2019): 143–52. http://dx.doi.org/10.22630/pniks.2019.28.1.13.

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This article aims to analyze the causes of failure of part of the suspended ceiling. The destructive tests of metal expansion plugs have been carried out. Their admissible loads were calculated – adm F, in accordance with PN/EN 13964:2014, and the actual state of the structure was confronted with the “general” ceiling scheme that the contractor had at its disposal. Although the expansion plugs met the load capacity condition, uneven load of hangers and exceeding their maximum spacing (up to 70%) and a long bracket (6 times) in relation to those provided in the system caused a structural failur

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13

Suryawanshi, Sanjeev Damodar, Mansi Vijay Chavan, Kirti Somnath Pakhale, Diptej Sandip Shinde, and Vishwavidhey Umendra Warudkar. "Experimental Investigation of false ceiling using bubble sheet for sustainable ventilation." International Journal of Microsystems and IoT 2, no. 7 (2024): 1010–16. https://doi.org/10.5281/zenodo.13329256.

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Ventilation with proper air change rate (ACR) is a crucial component in maintaining healthy indoor air quality, especially in buildings with poor air circulation. Traditional methods of ventilation, such as mechanical systems, will be costly and energy intensive. Specially in sheet metal roof top buildings the heat gain is more than concrete slab. The heat transferred in occupied space is not only by conduction. convection but radiation mode of heat transfer feels like burning sensation to the occupants. Bubble sheet installation as a false ceiling at predetermined distance will acts as radiat

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14

Aan, Sudarwanto, Dwi Wulandari Novita, Cahyana Agung, Adi Prabowo Rahayu, and Jati Purnomo Arif. "The Transformation of Batik Motif: Transforming Interior Spaces to be More Aesthetic with Batik Patterned Metal Ceilings." International Journal of Social Science and Human Research 07, no. 12 (2024): 8857–62. https://doi.org/10.5281/zenodo.14285186.

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Batik continues to evolve beyond its traditional function. This study explores the innovative transformation of batik motifs into metal ceilings as a representation of the integration of traditional aesthetics with modern technology in contemporary interior design. The main objective of the study is to analyse the potential for developing batik-patterned metal ceilings that combine cultural values with technological innovation. The research methodology uses a mixed qualitative and quantitative approach, including literature studies, design observations, and manufacturing technology experiments

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MOLODID, Oleksandr, Ruslana PLOKHUTA, Olena MOLODID, and Ivan MUSIIAKA. "Analysis of technologies for restoring the serviceability of reinforced concrete ceiling structures." Ways to Improve Construction Efficiency 1, no. 54 (2024): 44–56. https://doi.org/10.32347/2707-501x.2024.54(1).44-56.

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As a result of military operations, a significant part of construction objects was damaged by off-design impacts. Among the damaged structures, a significant proportion is accounted for ceiling. In our case, majority of ceilings are made of hollow-core reinforced concrete slabs. According to the current regulatory documents, some of these ceilings are subject to restoration. Therefore, the analysis and identification of the most rational and effective technologies for restoring the operational suitability of damaged building structures, in particular, ceilings, is an urgent task today. The art

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16

Ramawangsa, P. A., and A. Prihatiningrum. "Study of Roof and Ceiling Surface Temperatures in Coastal Area (Case Study: Pasar Bengkulu Village)." IOP Conference Series: Earth and Environmental Science 1404, no. 1 (2024): 012042. http://dx.doi.org/10.1088/1755-1315/1404/1/012042.

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Abstract The majority of residential roofs in Pasar Bengkulu Village are constructed using corrugated iron and galvalum metal. These coastal areas often grapple with high levels of solar heat radiation. Both corrugated zinc and galvalum roofing materials are known for their high heat conductivity and excellent heat-reflecting capabilities. To combat this, solar reflectance paint is often used to reflect solar radiation heat, thereby reducing heat absorption. This research is a qualitative research with a focus on the description and analysis of measured data which aims to compare the surface t

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17

Sü, Zühre, and Mehmet Çalışkan. "Acoustical Design and Noise Control in Metro Stations: Case Studies of the Ankara Metro System." Building Acoustics 14, no. 3 (2007): 203–21. http://dx.doi.org/10.1260/135101007781998910.

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The aim of this research is to demonstrate the importance of initial strategies in acoustical design of underground metro stations. The paper searches for practical design solutions by evaluating different materials for providing optimum acoustical conditions in such spaces. Acoustical designs of three metro stations on a new expansion line in Ankara including Sogutozu, Bilkent and ODTU metro stations are presented through computer simulation. Predictions of room acoustical parameters are presented for both platform and ticket office floors in terms of parameters like reverberation time (RT),

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18

Kim, Hong-Sik, Bu-Yeol Oh, and Min-Young Park. "Fire Spread in Insulation Materials in the Ceiling of a Piloti-Type Structure." Fire Science and Engineering 34, no. 5 (2020): 18–26. http://dx.doi.org/10.7731/kifse.78ac4f83.

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In piloti-type structures, large-scale fires frequently occur because insulation materials in the ceiling are ignited. However, the spread of fire in these cases is not well known. Therefore, this study conducted small-scale (1.0 m × 1.0 m) tests and real-scale model tests. According to the results, we clarified the fire spread, temperature variation over time, and the effects of insulation materials in fire sites. For the small-scale tests, the internal structure of the ceiling was extruded polystyrene (XPS) + sheet molding compound (SMC), retardant expanded polystyrene (Retardant EPS) + shee

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19

Antonopoulos, K. A., M. Vrachopoulos, and C. Tzivanidis. "Experimental evaluation of energy savings in air-conditioning using metal ceiling panels." Applied Thermal Engineering 18, no. 11 (1998): 1129–38. http://dx.doi.org/10.1016/s1359-4311(98)00022-2.

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20

Runefors, Marcus, Per Boström, and Erik Almgren. "Comparison of sprinkler activation times under flat and corrugated metal deck ceiling." Journal of Physics: Conference Series 1107 (November 2018): 062006. http://dx.doi.org/10.1088/1742-6596/1107/6/062006.

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21

Zhang, Lun, Xiao-Hua Liu, and Yi Jiang. "Experimental evaluation of a suspended metal ceiling radiant panel with inclined fins." Energy and Buildings 62 (July 2013): 522–29. http://dx.doi.org/10.1016/j.enbuild.2013.03.044.

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22

Amanowicz, Łukasz, and Janusz Wojtkowiak. "Experimental investigations of thermal performance improvement of aluminum ceiling panel for heating and cooling by covering its surface with paint." E3S Web of Conferences 44 (2018): 00002. http://dx.doi.org/10.1051/e3sconf/20184400002.

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Due to the low emissivity of raw metal surface (i.e. aluminum), the specific heating or cooling performance of non-painted surfaces is powered mainly on the natural convection and is relatively small. It can be sufficient for low energy buildings but not for the traditional ones. To increase the heat exchange through the radiation one can cover the raw surface with paint to increase its emissivity. To investigate the influence of paint cover on the heating and cooling performance of the ceiling-oriented flat aluminum surface the experimental investigations were done. The experiment was conduct

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23

Nichols, Kevin P., Jan C. T. Eijkel, and Han J. G. E. Gardeniers. "Nanochannels in SU-8 with floor and ceiling metal electrodes and integrated microchannels." Lab Chip 8, no. 1 (2008): 173–75. http://dx.doi.org/10.1039/b715917j.

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24

Jeong, Jae-Weon, and Stanley A. Mumma. "Practical cooling capacity estimation model for a suspended metal ceiling radiant cooling panel." Building and Environment 42, no. 9 (2007): 3176–85. http://dx.doi.org/10.1016/j.buildenv.2006.08.006.

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Jeong, Jae-Weon, and Stanley A. Mumma. "Simplified cooling capacity estimation model for top insulated metal ceiling radiant cooling panels." Applied Thermal Engineering 24, no. 14-15 (2004): 2055–72. http://dx.doi.org/10.1016/j.applthermaleng.2004.01.017.

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26

Balázs, Ivan, and Jindřich Melcher. "Stability of Thin-Walled Beams with Lateral Continuous Restraint." Transactions of the VŠB – Technical University of Ostrava, Civil Engineering Series. 15, no. 1 (2015): 1–10. http://dx.doi.org/10.1515/tvsb-2015-0001.

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Abstract Metal beams of thin-walled cross-sections have been widely used in building industry as members of load-bearing structures. Their resistance is usually limited by lateral torsional buckling. It can be increased in case a beam is laterally supported by members of cladding or ceiling construction. The paper deals with possibilities of determination of critical load of thin-walled beams with lateral continuous restraint which is crucial for beam buckling resistance assessment

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Mircea, Andreea-Terezia. "Investigation of the prestressed beams and glass-window panels at a shopping centre." MATEC Web of Conferences 289 (2019): 10008. http://dx.doi.org/10.1051/matecconf/201928910008.

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In today’s rapidly changing demands of commercial buildings, designers, manufacturers, contractors, and installers face the necessity to advance their methods, to improve techniques, and generally to stay competitive under all constraints of time, budget, codes and client desires. Building with precast concrete elements provides quick and cost-efficient production, along with flexible, independent interior design. The show-window of the investigated commercial building is divided into several glass panels. Having only upper and lower grip, the glass window panels with very tall heights, are su

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Quesada Allerhand, José, Ongun Berk Kazanci, and Bjarne W. Olesen. "Energy and thermal comfort performance evaluation of PCM ceiling panels for cooling a renovated office room." E3S Web of Conferences 111 (2019): 03020. http://dx.doi.org/10.1051/e3sconf/201911103020.

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The performance of suspended ceiling panels with phase change materials (PCM) for comfort cooling applications in office rooms was studied. The panel consisted of a metal casing, which encapsulates the PCM. Water can circulate through the pipes embedded in the panel to influence the latent energy storage of the material. To evaluate the performance of the PCM panels, a comparison with an all-air system and a thermally active building system (TABS) was made. Using TRNSYS 17, a recently renovated room in the Technical University of Denmark was modelled. The room was simulated during the cooling

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29

Nassof, Martin. "Suspended ceiling having a concealed suspension grid and lay‐in metal panels supported thereon." Journal of the Acoustical Society of America 84, no. 1 (1988): 463. http://dx.doi.org/10.1121/1.396899.

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30

Johansson, Bengt. "Elastic hangers for suspended ceilings - are they really needed?" INTER-NOISE and NOISE-CON Congress and Conference Proceedings 265, no. 1 (2023): 6632–44. http://dx.doi.org/10.3397/in_2022_1000.

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Suspended ceilings made of several layers of gypsum boards are a common way to increase the sound insulation of slabs in buildings. The ceiling is typically hanging 100-500 mm below a slab. There are many manufacturers of the hangers and most of them supply elastic hangers, made of rubber or metal springs. The elastic hangers are very costly and there are very little scientific data of the effect of these elastic hangers, especially at low frequencies and especially for concrete slabs, which are the most common slab type. The sound insulation of normal buildings is increasing with frequency an

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31

Chen, Xian Zhong, Ran Ran Li, and Qing Wen Hou. "Indoor Ultrasonic 3D Seamless Location and Wireless Communication of Metal Can." Applied Mechanics and Materials 157-158 (February 2012): 788–91. http://dx.doi.org/10.4028/www.scientific.net/amm.157-158.788.

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A system with low-cost, low power consumption and wide range of ultrasonic positioning was designed. The node layout is the ultrasonic transmitter vertically installed on the top of the metal can as unknown node, the ultrasonic receivers as beacon nodes, 4 nodes installed on the ceiling and 4 nodes installed on the floor fixed position to receive ultrasonic. Ultrasonic sensor was designed with low power consumption microcontroller Ti MSP430F1611 and RF transceiver chip CC2420. Effective range is 10m, accuracy ± 2cm, launch angle , the system power 200 ~ 400uA/MIPS, 5V lithium battery-powered,

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32

Baig, Tatiana A., Meiyi Zhang, Brooke L. Smith, and Maria D. King. "Environmental Effects on Viable Virus Transport and Resuspension in Ventilation Airflow." Viruses 14, no. 3 (2022): 616. http://dx.doi.org/10.3390/v14030616.

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To understand how SARS-CoV-2 spreads indoors, in this study bovine coronavirus was aerosolized as simulant into a plexiglass chamber with coupons of metal, wood and plastic surfaces. After aerosolization, chamber and coupon surfaces were swiped to quantify the virus concentrations using quantitative polymerase chain reaction (qPCR). Bio-layer interferometry showed stronger virus association on plastic and metal surfaces, however, higher dissociation from wood in 80% relative humidity. Virus aerosols were collected with the 100 L/min wetted wall cyclone and the 50 L/min MD8 air sampler and quan

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Luo, Zheng, Jianyang Xue, Tiegang Zhou, Liangjie Qi, and Xiangbi Zhao. "Shaking table tests and seismic design suggestions for innovative suspended ceiling systems with detachable metal panels." Engineering Structures 232 (April 2021): 111830. http://dx.doi.org/10.1016/j.engstruct.2020.111830.

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34

Gallardo, Andres, and Umberto Berardi. "A simple method for validating a simulation model of a radiant ceiling panel with thermal energy storage." Journal of Physics: Conference Series 2069, no. 1 (2021): 012119. http://dx.doi.org/10.1088/1742-6596/2069/1/012119.

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Abstract This paper focuses on validating a simulation model of a radiant ceiling panel (RCP) incorporating phase change materials (PCM) for heating and cooling applications in buildings. The development of an RCP with thermal energy storage capacity aims to encourage high thermal mass radiant systems in existing buildings to replace the traditional all-air HVAC system. First, a heat flow meter (HFM) is used to perform enthalpy measurements at a product scale (macro-encapsulated PCM). Then, a small test chamber is constructed to measure the dynamic thermal performance of an RCP with PCM under

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35

Otaba., Ewona I., Uza Terso, Rabiu B. keen, et al. "Assessment of the Pollution Indices of Particulate Matter Trapped in Classroom Ceiling Fans in a Tertiary Institution in Southern Nigeria." International Journal of Research and Scientific Innovation XI, no. VII (2024): 1260–75. http://dx.doi.org/10.51244/ijrsi.2024.1107098.

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This study examined concentration of particulate matter in ceiling fans at the four campuses of the University of Cross River State, Calabar – Nigeria. Samples of dust particles were collected from six different halls in indoor environment. The samples were analysed using standard laboratory techniques. Heavy metals such Zn, Cu, Fe, Mn, Cr, Cd, Ni and Pb were present in the dust samples and the data were analysed using pollution indices. The findings of the study revealed that the study area is heavily polluted with Cd, Mn, Cu, Cu and Pb with a few exceptions in some sampled sites. The major h

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Amstutz, Harlan C., and Michel J. Le Duff. "Effects of physical activity on long-term survivorship after metal-on-metal hip resurfacing arthroplasty." Bone & Joint Journal 101-B, no. 10 (2019): 1186–91. http://dx.doi.org/10.1302/0301-620x.101b10.bjj-2018-1535.r2.

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Aims In previous studies, we identified multiple factors influencing the survivorship of hip resurfacing arthroplasties (HRAs), such as initial anatomical conditions and surgical technique. In addition, the University of California, Los Angeles (UCLA) activity score presents a ceiling effect, so a better quantification of activity is important to determine which activities may be advisable or detrimental to the recovered patient. We aimed to determine the effect of specific groups of sporting activities on the survivorship free of aseptic failure of a large series of HRA. Patients and Methods

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Mironov, Viktor, Mihails Lisicins, and Irina Boiko. "Sandwich Panels Made of Perforated Metal Materials." Solid State Phenomena 320 (June 30, 2021): 155–60. http://dx.doi.org/10.4028/www.scientific.net/ssp.320.155.

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Nowadays, the growing attention has focused on the sandwich-structured composites (panels), especially on those, which are environmentally friendly. The sandwich panel is a special type of the composites made of at least three layers: a core and a skin-layer bonded to each side. The aim of this paper is to investigate the possibility of using of perforated metallic materials for producing sandwich panels for the different application in the civil engineering. By using the perforated metallic materials in combination with different core materials or by using the perforated metallic material as

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Hire, Sumit. "Sustainable Ventilation Solution for Thermal Comfort Using Bubble Sheet as A False Ceiling." INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 09, no. 04 (2025): 1–9. https://doi.org/10.55041/ijsrem45520.

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Abstract - Ventilation with human comfort is gaining prominence in the HVAC sector. Although renewable energy sources are in the limelight, there is still a lot to be discovered in this field. Ventilation with a sufficient air change rate (ACR) is necessary for healthy indoor air quality, particularly in buildings with poor ventilation. Conventional electromechanical systems work well but tend to be costly and energy-hungry. This phenomenon is more for sheet metal-roofed buildings, where the heat gain is much greater than in concrete slabs. The transfer of heat by conduction, convection, and r

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Yu, Guoqing, Le Xiong, Chengjun Du, and Hengtao Chen. "Simplified model and performance analysis for top insulated metal ceiling radiant cooling panels with serpentine tube arrangement." Case Studies in Thermal Engineering 11 (March 2018): 35–42. http://dx.doi.org/10.1016/j.csite.2017.12.006.

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40

Huang, Guang Yow, Hsien Te Lin, and Tzu Ching Su. "A Study on the Energy Conservation Efficacy of Secondary-Reflection Lighting Design Adopted in a Conference Hall." Applied Mechanics and Materials 71-78 (July 2011): 2447–51. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.2447.

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A conference hall is a large meeting space that requires high-wattage lighting equipment to provide sufficient illumination. Ceiling lights are not easy to maintain and cause glare in the seating area. This study simulates the interior lighting of the International Conference Hall in the Magic School of Green Technology (MSGT) using high efficiency ceramic metal halide lamps that replace the general design luminaires, and PL and fluorescent lamps. We use the secondary reflection of light to reduce glare and improve lighting uniformity. The results show that high efficiency lighting can reduce

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41

Lo´pez, J., F. Faura, J. Herna´ndez, and P. Go´mez. "On the Critical Plunger Speed and Three-Dimensional Effects in High-Pressure Die Casting Injection Chambers." Journal of Manufacturing Science and Engineering 125, no. 3 (2003): 529–37. http://dx.doi.org/10.1115/1.1580525.

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During the initial slow stage of the injection process in high-pressure die casting machines with horizontal cold chamber, a plunger pushes the molten metal which partially fills the injection chamber, causing the formation of a gravity wave. The evolution of the wave surface profile, which depends on the plunger acceleration law, may trap air in the molten metal, causing porosity when the metal solidifies. In this work, a one-dimensional shallow-water model, which is solved numerically using the method of characteristics, and a three-dimensional numerical model, based on a finite element form

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Park, Kwang-Muk, Jae-Kam Jeon, and Sun-Bae Bang. "A Study on Fire Spread and Evacuation Risk of Conduit Combustion in Ceiling Hiding Place." Fire Science and Engineering 34, no. 1 (2020): 55–65. http://dx.doi.org/10.7731/kifse.2020.34.1.055.

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In this study, the ISO 5660 and ISO 5659 combustion tests were conducted with synthetic resin conduits (CD, VE) and metal conduit (ST) used for wiring work in electrical facilities, which can be installed in ceiling concealed places. Then, fire spreading and evacuation risks were analyzed based on the measured data. In the ISO 5660 test, CD of 120.5 MJ/㎡, VE of 81.9 MJ/㎡, and ST of 4.9 MJ/㎡ were measured. In the ISO 5659 test, the CD 1320, VE 731, and ST 102 were measured, and then the maximum smoke densities were measured for CD 605 s, VE 740 s, and ST 1,200 s. In terms of fire spreading and

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Amici, Carla Maria. "Unusual Examples of Sophisticated Iron Technology in the Heating Systems of Roman Imperial Baths." European Journal of Archaeology 18, no. 4 (2015): 658–78. http://dx.doi.org/10.1179/1461957115y.0000000002.

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In Roman imperial times, metallurgy reached a high degree of specialization and complexity. The use of iron extended even to building technology, leading to some very particular results, achieving a sophisticated mastery of the technology with a complete understanding of metal properties, in a social and economic context characterized by large financial resources and a high level of creativity applied to architectural projects. A still unpublished device was found in the construction of several floors in the Villa of Giulia, Augustus' daughter, in Ventotene (Italy). In the thermal area, the co

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Qin, Wenqi, Yingning Hu, Jinwen Su, and Yubang Hu. "A New Type of Air Conditioning System Based on Finned Ceiling Radiant Coupled with Independent Fresh Air and Its Thermal Comfort Experimental Study." Computational Intelligence and Neuroscience 2022 (September 17, 2022): 1–15. http://dx.doi.org/10.1155/2022/4144569.

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The traditional radiation air conditioning system has some problems, such as easy condensation, insufficient refrigeration capacity, complex structure, and control system. Therefore, this study proposes a new type of finned metal radiant plate with large heat flow per unit area, sufficient cooling capacity, and simplified heat exchange system, in order to realize large temperature difference between cooling and heating. The temperature field uniformity and thermal comfort test of a novel type of finned ceiling radiant panel and independent fresh air linked air conditioning system under summer

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Maskur, Atep, M. Agung Wibowo, and Setya Winarno. "Damage Assessment Method for Light Steel Roof Frames: Case Study of Government Buildings." Semesta Teknika 27, no. 1 (2024): 10–20. http://dx.doi.org/10.18196/st.v27i1.18341.

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The tornado disaster in Ciamis Regency damaged 55 buildings, including the Panawangan District Office. The aim of this research was to identify the condition and level of damage to the Light Steel Roof Frame Structures that were damaged and determine the ranking or percentage of damage. By making direct observations at the location of the incident. The result is that: The roof covering element uses zincalum metal with the batten frame partially damaged on the left side of the building above the hall and the right corner of the front of the building. The battom chord, top chord and web elements

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Mahdavinejad, Mohammadjavad, Sanaz Ahmadzadeh Siyahrood, Mohammadhossein Ghasempourabadi, and Mona Poulad. "Development of Intelligent Pattern for Modeling a Parametric Program for Public Space (Case Study: Isfahan, Mosalla, Iran)." Applied Mechanics and Materials 220-223 (November 2012): 2930–35. http://dx.doi.org/10.4028/www.scientific.net/amm.220-223.2930.

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Islamic arts consist of several parts and could be noticed in works such as tiling, plaster works, stalactite work and etc. As well as in windows templates, wooden doors. The geometrical patterns as a part of Islamic arts have a ground for parametric program. This paper studies about the patterns that have emerged from Iranian traditional geometry and possess the ability to be changed into an intelligent pattern; followed by assessing characteristics that would make them parametric. The results were compared with Isfahan Mosalla, as the largest complex of metal shell with the dome-shape specia

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A’yun, Qurrotul, Kusnul Prianto, and Muhamad Ratodi. "Acoustic Design for Urban Educational Buildings by Using Noise Tools, IBANA Calc and Ecotect." IOP Conference Series: Earth and Environmental Science 1169, no. 1 (2023): 012047. http://dx.doi.org/10.1088/1755-1315/1169/1/012047.

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Abstract Classroom is an integral part of learning activities in educational buildings. Learning in the classroom can be effective and focused if it has a good acoustic design. Unfortunately, most educational buildings are spread out in urban areas, which have a high noise level. This research aims to find the best acoustic design for educational buildings in urban areas. By using Noise Tools, IBANA Calc and Ecotect as simulation method, the research discusses the handling of acoustic design for educational buildings in urban areas through 3 (three) things. (1) Providing a barrier with a heigh

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Patel, Anuj B., Kanishka Ratnayaka, and Lisa Bergersen. "A review: Percutaneous pulmonary artery stenosis therapy: state-of-the-art and look to the future." Cardiology in the Young 29, no. 2 (2018): 93–99. http://dx.doi.org/10.1017/s1047951118001087.

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AbstractStenosis, or narrowing, of the branches of the pulmonary artery is a type of CHD that, if left untreated, may lead to significant complications. Ideally, interventions to treat stenosis occur before significant complications or long-term sequelae take place, often within the first 2 years of life. Treatment depends on specifics of the condition, the presence of other malformations, and age of the child. Research and recent innovation to address these shortcomings have provided physicians with safer and more effective methods of treatment. This has further continued to push the ceiling

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Manandhar, Amar B., Durga B. Karanjit, Govinda Tiwari, et al. "Experiences in Improving Efficiency of Energy and Other Resources in Metal Industries in Nepal." Journal of the Institute of Engineering 15, no. 3 (2020): 227–33. http://dx.doi.org/10.3126/jie.v15i3.32186.

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The construction sector uses various metals like steel (for frames, reinforced concrete), iron (wrought iron for beams, trusses, girders), aluminium (ceiling and walls, window frames, HVAC systems etc.) and copper (cladding, electrical wiring, oil & gas lines). Due to increasing pressure on various resources like energy, chemicals and raw materials, economic edge can be sustained only through high resource efficiency. Adopting resource efficient cleaner production (RECP) measures will improve economic and environmental performance, including reducing greenhouse gas emissions; in turn, this

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Jadhav, H. T., S. J. Hoff, J. D. Harmon, Igancio Alvarez, D. S. Andersen, and Ulrike Passe. "Swine Finishing Room Air Infiltration: Part 1. Quantification and Prediction." Applied Engineering in Agriculture 34, no. 2 (2018): 413–24. http://dx.doi.org/10.13031/aea.12396.

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Abstract. Air infiltration through unplanned inlets is an integral component of any ventilation process. Air infiltration affects the quality of the room environment and can also increase winter heating costs. Precise data on air infiltration is very important in the design of animal room ventilation systems. Nineteen mechanically ventilated (negative pressure type) swine finishing rooms in Iowa were tested for their air infiltration potential. Using the data of 17 rooms, air infiltration rate through the whole room (i.e., total air infiltration, It), curtains (Ic), fans (If), and net building

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