bluuebunny/crossref_metadata_2025_split huggingface dataset:
Linear equation systems for structural analysis: imagining resolutions
Authors: Lacort Agustin Gregorio 
Published: December 2021

Abstract
This work is based on a study into new ways of resolving the equilibrium equation systems for manual analyses of certain structures commonly found in building. It suggests finding solutions based on images that reproduce the operations of current methods, which may inspire the design of others that qualitatively reflect those of other more effective procedures. To date three methods (Gauss, Cholesky & Crout) have been imagined: (i) by “visualising” their operations through the mechanical behaviour of models during the equilibrium phase. These visualisations may help suggest other physical responses that can balance models more quickly and identify with new, more direct numerical methods; (ii) by “geometrising” operations by means of lines sketched freehand. This geometrisation may reveal hidden links between the parts of the calculation of current methods that enable more direct but equally precise new methods to be created. The paper shows four images to reinforce these viewpoints. Two visualise the methods of Gauss-Jordan and Cramer, confirming that the abstract procedures that resolve the systems may be linked to specific mechanical behaviours. The other two geometrise the resolutions by Gauss and Gauss-Jordan when the stiffness matrices are asymmetric. Their systems could emerge from the analysis of cracked models or from obtaining the equivalent actions in the P-Δ method, in line with a procedure drawn up previously. The paper ends by geometrising the resolution of a system at different scales and comparing the outcomes with those of numerical methods. The results (i) confirm that geometrising scalar and vectorial magnitudes for numerical analysis procedures reduces application times if they are calculated freehand; and (ii) point to possible lines of research for developing further graphic methods that can analyse other types of structure directly and accurately.
Comparison of Influence of Superficial Strengthening with FRCM System and Kind of Mortar Type on Shear Strength of Autoclaved Aerated Concrete Masonry
Authors: Drobiec Łukasz , Jasiński Radosław , Mazur Wojciech , Jokiel Remigiusz 
Published: December 2021

AbstractThis paper describes a comparison of results from testing shear strength of autoclaved aerated concrete (AAC) walls strengthened with superficial strengthening with the results of tests of walls made of various types of joints and mortar. The initial and characteristic shear strength and the angle of internal friction were compared. The test elements were made using two types of mortars, three types of joints, and two methods of reinforcement. The models were made using masonry units in the SOLBET OPTIMAL system. SOLBET 0.1 mortar, intended for thin joints, as well as SOLBET SMART polyurethane adhesive were used. Typical joints with a width equal to the thickness of the wall, shell bedded joints and joints without mortar were made. Models with typical joints were also tested as reinforced on one and two sides with the FRCM system, using the mineral cement matrix PBO-MX GOLD MASONRY and the PBO-MESH GOLD 22/22 mesh. A total of 56 models were tested in accordance with the requirements of PN-EN 1052-3: 2004. A significant influence of with superficial strengthening as well as the type of mortar and the construction of joints on the individual parameters of shear strength was demonstrated.
District–Learning: An Architectural Approach to Bridge the Academic Gap in the UAE Educational System
Authors: Belpoliti Vittorino , Nahlawi Marwa Al , Husein Lama Al Haj , Khaled Sana Al 
Published: December 2021

Abstract
The United Arab Emirates Vision 2071 expects the country to become one of the best in the world in several sectors, including education and infrastructure. Highlighting today’s global tendency towards a knowledge-based economy, it drives the need to bridge the academic gap in UAE’s educational system to enhance the nation’s innovation. This gap is best addressed from three different levels, policy level, pedagogical level, and socio-urban level. The UAE is working on developing its educational system by emphasizing its importance through the UAE future strategies and policies, that will upgrade it with its new pedagogical facilities. This study proposes the “District-Learning”, a novel approach to upgrading the UAE educational system/sector by providing the necessary new pedagogical functions in a building located in the barycenter of a school district and serving all its existing facilities. The concept focuses on boosting the communication between schools in the same district and enables sharing resources between them. This non-physical connectivity will be translated into physical connectivity which bridge each existing school to the new building. The construction process fosters modularity and flexibility, allowing the project to fit the demand of different districts. The study present the results of a test of this new approach to the case study of Al Jurf 2 zone in Ajman.
Performance of Multicriteria Evaluation and Heuristic Methods in the Delineation of Green Infrastructure in Areas with Fragmented Landscapes
Authors: Losada Rocío , Boullón Marcos , García Andrés M. , Miranda David 
Published: December 2021

Abstract
The EU Commission has established Green infrastructure as one of the tools to preserve biodiversity and grant the provision of ecosystem services that reduce impacts on natural values like those produced by climate change. Therefore, a European green infrastructure strategy has been created that commit member states to incorporate green infrastructure to their territorial planning. Yet, methodologies to delimit green infrastructure so as to facilitate its inclusion in territorial plans are still scarce. The available methods are mainly based in multicriteria evaluation and focus on zoning general green infrastructure areas taking into account the provision potential of just a few ecosystem services. Considering the provision of a wide range of ecosystem services to delimit green infrastructure elements is key to grant their multifunctionality and increase their efficiency mitigating climate change impacts in natural values and human population. However, the lack of data or the high cost to accurately map ecosystem services provision potential, leads most of the time to infer it from land cover data. This creates problems when using these maps to delimit green infrastructure in areas with fragmented landscapes; since identified green infrastructure areas may be irregular and scattered. There are heuristic methods like simulated annealing that have been used to identify ecosystem services hot spots which consider the regularity and size of the identified patches. These methods can be used to delimit green infrastructure in fragmented landscapes finding a balance between the regularity of the areas and their potential to provide multiple ecosystem services. In the current work, a comparison has been made between the performance of simulated annealing and current multicriteria evaluation methods to delimit green infrastructure multifunctional buffer zones in an area of north-western Spain with a very fragmented landscape. Results have shown that simulated annealing delimits more regular multifunctional buffer areas but with a less average potential for providing multiple ecosystem services. The conclusions of the paper indicate that simulated annealing is good produces more regular multifunctional areas but with a lower ESs provision potential. It was observed that in the case of ESs that were mapped considering factors at landscape scale, their provision potential did not vary too much between the multifunctional buffer areas delimited with each of the methods. This indicates that delineation methods may produce more regular GI elements if ESs provision potential is mapped considering the influence of biophysical factors at a wider landscape scale.
Investigation of Fire Effect of Reinforced Aerated Wall (ACC) System Produced by Using Sustainable Construction Material
Authors: Usta Pinar , Zengin Başak 
Published: December 2021

Abstract
Reinforced Aerated Concrete panel building systems are preferred as wall elements in residences and industrial facilities due to their advantages. The signal issue encountered in industrial facilities is caused by fires that occur. Fire resistance of sustainably reinforced aerated concrete panels was investigated. The wall G3/05 class reinforced panel model to be used for the test was preferred. The panel wall has been subjected to a 120-minute fire resistance test. In this process, 1050 C° temperature was measured on the surface exposed to flames, while the wall temperature was read 50 C° on the other surface, and the heat temperature increased to 70 C° only at the panel joints. The data obtained from showed that the reinforced aerated concrete panels maintain their integrity under fire and resistant to high temperatures. These data that reinforced aerated concrete systems should be preferred, in buildings with human population and high fire risk.
Shaping the image of a city on the example of a development of parts of waterfront in Bydgoszcz - a relation of Rother’s Mills and Nordic Haven buildings
Authors: Grześkow Iga 
Published: December 2021

Abstract
According to Alexander Wallis, the city's cultural values relate to its historic and architectural, symbolic and religious, artistic and prestigious values. They are represented by individual buildings, monuments, sculptures, street furniture and entire urban complexes - streets, squares, parks, engineering works, and finally entire districts and urban landscapes. [1] In Bydgoszcz these values are represented by the Mill Island. After years of neglect, together with its immediate surroundings it has been re-incorporated into the city's structure, becoming a full-fledged, attractive and highly prestigious social area. The article presents a history of creation, functions and mutual relations of revitalized historic Rother’s Mills complex and Nordic Haven - a modern residential and commercial development and also aims to analyze the impact these buildings had on the space and surroundings of the Mill Island. The two architectural ensembles, arranged in mutual spatial relations, shape the landscape of the downtown, river bank part of Bydgoszcz on different principles. These buildings, as part of a historical urban layout of the city, represent extremely different methods of developing its areas requiring special protection and attention.
From ‘Orthogonal’ Sprawl to ‘Curvilinear’ Dense: Assessing Accessibility Indices for Urban Networks of Social Housing in UAE
Authors: Ahmed Khaled Galal 
Published: December 2021

Abstract
The shift towards designing more dense urban social housing neighbourhoods has started with the embracing of urban sustainability principles by the UAE government since the beginning of the 21st century. The assessment of the recent neighbourhoods designs still lacks concrete evidence about their expected performance especially for pedestrian mobility networks. This concern is gaining further significance with the noticeable tendency of most of the recent urban designs towards developing organic and curvilinear networks instead of the conventional orthogonal grids of the mobility networks that distinguished the traditionally designed neighbourhoods in the country. To bridge this gap, the research comparatively and quantitively analysed the accessibility performance indicators of both of the traditional and the modern urban network designs. The research adopted the Case Study method with quantitative investigation tools that are fundamental to Urban Network Analysis, especially in relation to Accessibility. The simulation of the urban networks of two selected urban social housing neighbourhood forms, representing the networks of both the traditional urban orthogonal sprawl and the recent curvilinear dense one, were utilized employing the UNA toolbox. Three complementary Accessibility Indices were analysed including: Reach, Gravity and Straightness. Through this analysis, the aspects that affected the accessibility performance of the two urban form paradigms and the problems that have been associated with the designs of the urban networks of the new social housing projects, have been revealed. It became evident that the denser urban form was not sufficient in enabling more accessible facilities in the recent neighbourhoods designs. The orthogonal grid, even with its very low Floor Area Ratio showed better performance of in the three accessibility indices especially the Straightness index, if compared with the much denser curvilinear grid with it ‘naturally longer’ pattern. The inefficient number and the inappropriate distribution locally provided facilities in relation to the pedestrian mobility networks have contributed to these disappointing results. So, it is essential to include this and/or similar urban network quantitative simulation tools to help develop genuinely sustainable urban forms for this significant type of urban development in the UAE cities.
Site Characterization and Associated Disposal Costs for Illegal Dumpsites Located in the Municipality of La Granja, Chile
Authors: Seal Christian , Mery Patricia , Alegría Patricia 
Published: December 2021

Abstract
Chilean legislation dictates that Municipalities are responsible for household solid waste management, but this doesn’t include the clean-up of illegal dumpsites. These in-city dumpsites usually are located on public roads, parks or abandoned sites; have a wide variety of origins, from household trash to business waste, and feature a high component of construction debris. One of the main problems that municipalities have managing these sites is that when they are cleaned, the dumpsites immediately reappear. Therefore, a site survey and visual characterization was performed for these illegal dumpsites at the Municipality of La Granja, and a cost analysis associated with the constant clean-up costs was performed. La Granja Municipality has an established clean-up program with a frequency that varies from one to three withdrawals a week per dumpsite. Santiago is Chile's capital and is divided into 32 municipalities, the general population of the city is 5.250.565 habitants according to the 2017 census. La Granja is one of Santiago’s municipalities; according to the last census, it has 116.571 inhabitants and a total of 34.423 households divided into 69 neighbourhoods. The social economical income of the municipality corresponds to medium low to lower level. The study detected 35 critical sites that were catalogued as recuring dumpsites. The mayor cause of these dumpsites corresponds to illegal dumping of construction waste, mayor appliance and household waste, and only one dumpsite didn’t present construction debris during the length of the study. The average volume measured in site, for most of the dumpsites varied from 1 to 3 m3 and only 2 sites exceeded 8 m3. The most important characteristics of the dumpsites were the ease accessibility (82,4%), followed by the total lack of public illumination, high vehicular traffic and to or more intersections (67,7%). The equipment and personnel cost were estimated for the clean-up service of the 35 dumpsites. The cost analysis showed that the associated cost of the clean-up corresponds to a 5,8% of the municipal budget for solid waste management. As a result of the study, 4 sites were intervened through the generation of green area or small parks, with an emphasis in the protection or blocking of the access and roadside.
Application of BIM Tools in Parametric and Generative Design for the Conception of Complex Structures
Authors: Quispe Luis , Ulloa Wilfredo 
Published: December 2021

Abstract
The present research applies the Parametric Design (PD) and Generative Design (GD) for the generation of complex structures, through the BIM methodology, being implemented in design phase of a new modern proposal for Pavilion J1 of the National University of Engineering from Perú. The research aims to: Study the PD and GD considering the interoperability provided by BIM tools, propose procedures that help solve PD and GD problems, understand the benefits of process automation through generative and parametric algorithms. The conception and design phase of projects are developed in a traditional way using CAD Softwares for drawing plans or BIM Softwares for the design and/or modeling of structures, carrying out manual tasks either for the extraction of measurements, exchange of information or modeling, this implies a lack of efficiency in many processes because despite having modern computational tools, the full potential they offer is not used. This is reflected in the productivity of the construction sector as it is one of the lowest compared to other sectors such as manufacturing, commerce, agriculture. Due to this problem, new technologies were studied, such as evolutionary algorithms supported by parametric design for the conception and design of structures. Subsequently, as a test, this new methodology was applied to various types of structures, testing the parametric behavior and understanding the operation of these new methodologies. As a result of the previous tests, key procedures were defined to cover parametric and generative problems, developing algorithms in textual code (Python), visual algorithms and applying generative algorithms (NSGA-II); capable of creating structures automatically adapting to the designer's criteria. Based on the last stage of the PD and GD procedures, the algorithms for the formulation of the structure were implemented in Block J1, demonstrating the applications and benefits in various tasks such as modeling, loads generation, structural design and software interoperability.
Specifics of multi-storey wood-based buildings
Authors: Švajlenka Jozef , Kozlovská Mária 
Published: December 2021

Abstract
Wood is one of the basic natural renewable materials. Knowledge of its basic properties is the first prerequisite for its proper use in various industries and in human life. Wood is the most versatile and most used material (industry, construction, agriculture, everyday life). Due to its natural character, natural drawing, favorable physical properties, it is an increasingly desirable element of the environment. In the world, but also in our country, the trend of wooden buildings is becoming more and more widespread, not only in the understanding of cottages, wooden houses and family houses using wooden elements. We are talking about office buildings, non-residential premises, but also wooden high-rise buildings. Multi-storey wooden structures are a promising area of application of wood, which requires much less energy for their production compared to other "classic" materials. The aim of this paper is to present selected aspects of multi-storey wood-based buildings and their application at present.
Experimental Study for the Analysis of the Potential Energy Conversion of Wastewater Discharged from Installations and Equipment’s of the Civil and Industrial Buildings
Authors: Tokar Danut , Tokar Adriana , Adam Marius 
Published: December 2021

Abstract
Even though the science and technology in the field of energy production for buildings has reached an advanced stage of development, there is still a considerable part of the population who do not have access to electricity. Currently, renewable energy (Solar, Wind, Geothermal, Hydro, Wave energy, Biogas), are considered sources that will meet future energy requirements, but have geographical limitations, are not available throughout the territory and are difficult to integrate into energy systems due to of the unpredictable character, their functioning being determined by the weather conditions. Also, the power and efficiency of renewable energy systems are still limited. Given that gravity (the fundamental forces of nature) is available everywhere, regardless of the climatic conditions, it represents an inexhaustible source of energy. In the context of apocalyptic scenarios or cyberattacks on energy systems, gravitational electrical systems can offer solutions for restoring electricity supply from simple to most complex solutions. The article explores the conversion of potential energy from wastewater of the technological processes, into electricity. The study was performed on an experimental stand designed to be connected to the drainage system of a water-to-water heat pump. The efficiency of potential energy conversion for applicability to wastewater discharging systems of equipping civil and industrial buildings was analysed.
Simple Laminated Glass Panels with Embedded Point Connection under Short-Term Load
Authors: Zdražilová Michaela , Sokol Zdeněk , Eliášová Martina 
Published: December 2021

Abstract
Glass is a very attractive material for contemporary architecture. The trend is to achieve a maximum transparency of structures; therefore it becomes common to use glass as a material for load-bearing structural elements. Glass facades, roofs, beams or columns are widely used in buildings. The problematic part of a glass structure design is the connection between the glass pieces or between the glass elements and substructures from another material (e.g. steel, concrete etc.). The connection must be capable of bearing the stresses performing during the lifetime period and it should be as unobtrusive as possible at the same time. The ongoing research at the Faculty of Civil Engineering of the Czech Technical University in Prague is focused on an embedded laminated point connection for glass structures. Within this research, the real-scale glass panels were tested. The samples consisted of two glass plies bonded with the EVA foil. For the undrilled ply, the float glass was used in all cases. The thermally toughened or the heat strengthened glass was used for the pre-drilled ply. There was one embedded steel countersunk bolt with HDPE liners placed in each corner of the sample. During the experiment, the samples were horizontally placed using the embedded bolts. The load-bearing capacity of the six tested specimens was determined. The load was applied in several loading and unloading cycles until the collapse of the first embedded connection. If the glass panel failed before the connection, the sample was completely unloaded and then the load was gradually increasing until the collapse of the connection. Vertical deflection and the stresses at two different points were measured during the loading cycles. The humidity and the temperature were also monitored. The experiment showed the way of collapse and a short-term load-bearing capacity of a laminated glass panel with four embedded point connections.