@article { author = {Mohamed, Abdou Khalaf and Haridy, Abdel kader A. and Awadallah, Zakaria H.}, title = {BEHAVIOURAL INVESTIGATION OF PRESTRESSED CONCRETE BRIDGES HAVING BOX GIRDER WITH THREE CELLS}, journal = {JES. Journal of Engineering Sciences}, volume = {46}, number = {No 6}, pages = {674-688}, year = {2018}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2018.110511}, abstract = {Post-tensioned, pre-stressed bridges are characterized by better stability and performance. The stress distribution in both directions, longitudinal “X” and transverse “Y“, of Box-Girder bridges is non-uniform, so it has complex behaviour. Recently there are much software for the design and analysis of bridges. Using software for bridges’ design is much better than the manual procedure. This paper involves modelling and analysis of a Box-Girder with three different-shaped, post-tensioned cells. Three variable shapes of multi-cell Box-Girders “Vertical-exterior girder, slopped-exterior girder and exterior girder with maximum slope” with the same area and different depths (2, 2.3 and 2.6m) were modelled and analysed using CSI-Bridge program, 2017-version. The analysis is carried under dead load, moving live load (according to the code of loading in Egypt), and pre-stressed load. Some results such as deflection and longitudinal stress were discussed and analysed.}, keywords = {Post-tensioned,Multi-cell Box-Girder Bridge,linear analysis}, url = {https://jesaun.journals.ekb.eg/article_110511.html}, eprint = {https://jesaun.journals.ekb.eg/article_110511_e0894b13d3e424182b440b174ed817ef.pdf} } @article { author = {Zien El-Abden, Samy and Abdel-Rahman, Mohieldeen}, title = {FORMABILITY IN HOLE EXPANSION OF 2-PLY (BRASS/ALUMINUM) SHEET USING A BALL-SHAPED PUNCH}, journal = {JES. Journal of Engineering Sciences}, volume = {46}, number = {No 6}, pages = {689-705}, year = {2018}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2018.115004}, abstract = {Hole expansion process (HE) of metallic sheets is used to the manufacture of many products like parts for the household appliances, automotive, medical and electrical industries. Due to the importance of brass and aluminum in the sheet metal industry, the present work presents an experimental investigation of the formability in the HE process of 2-ply sheet (brass supported by an aluminum sheet) using a ball-shaped punch. The main objective of is to investigate the effects of the pre-hole diameter, type of support on the forming loads, occurrence of maximum load, limiting expansion ratio (LER), and fracture modes. 1 mm thick brass and 3 mm thick w Aluminum were used. Holes were drilled in the specimen center on an upright drill. Hole diameters were 3, 6, 8, 10, 12 and 14 mm respectively. Uniaxial tension, cupping tests and HE experiments were performed for brass supported either by blind or holed Aluminum sheet. Results showed that the force required to expand the hole, the position at which the maximum force was reached, fracture mode and forming limits were dependent on the pre-hole diameter and type and condition of support. It was concluded that in HE of brass specimens supported by (either a blind or holed) Aluminum sheet, the force required to expand the hole and the position at which the maximum force was reached decreased as the pre-hole diameter of the brass specimen increased. Fracture mode proved to depend on the type of support (blind or holed) and the hole diameter in both brass sheet and supporting Aluminum sheet. Forming limit curve (FLC's) could be constructed for the range of hole diameters in both brass and Aluminum sheets showing safe and unsafe regions in the HE process assuming two criteria: occurrence of failures in the brass sheet and occurrence of failures in the supporting Aluminum sheet. Such curves are of distinguished industrial importance in determining the success or failure in the HE process.}, keywords = {Formability,hole expansion (HE),2-ply (brass/Aluminum) sheet,hole expansion loads,limiting Expansion Ratios (LER's),Forming Limit curves (FLC's),Fracture modes}, url = {https://jesaun.journals.ekb.eg/article_115004.html}, eprint = {https://jesaun.journals.ekb.eg/article_115004_5d8d80fb6fe1e3777fd043b8a4eb641c.pdf} } @article { author = {Said Saleh, Lotfy and Mohammed Lotfy, Shawkat and Abdelmonaim Merghany, Ezzat}, title = {THE DEVELOPMENT OF THE MINARETS BUILDING IN YEMEN AND EGYPT (FROM THE ERA OF THE BOSOM OF ISLAM UNTIL THE OTTOMAN ERA) COMPARATIVE ANALYTICAL STUDY}, journal = {JES. Journal of Engineering Sciences}, volume = {46}, number = {No 6}, pages = {706-718}, year = {2018}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2018.115006}, abstract = {The minaret is one of the important architectural elements associated with the building of mosques, which is the result of the functional role of the frying pan in addition to its visual and symbolic role, as it has distinctive architectural characteristics and has become a land mark in Islamic cities. The shape and design of minarets through different Islamic eras has been influenced by the specific geographical areas, political factors and governance systems.As a result of the common terms of government between Yemen and Egypt, the idea of a research paper for an analytical study of the influence of patterns in the architecture of the various Islamic eras on the minarets of the two countries, and then comparing the architectural output between the most important minarets of the various Islamic eras that emerged in The two countries from the era of Islam to the Ottoman era, the area of study in Yemen has been identified in the Western and central Highlands region of Yemen, which includes the regions (Sana'a, Dhamar, Shebam, Ibb, Taiz) and Egypt in the Cairo minarets.In order to achieve the objective of the research paper, the concepts of the minaret, their origins and their evolution in the Islamic world were presented in the first part of the paper, while in the second part of the paper the minarets were studied in Yemen and Egypt in the specified time period, and a comparative analysis of the development The minarets building in Yemen and Egypt, drawing the most important aspects of the consensus and the difference between them and the extent to which the prevailing patterns in the Islamic world affect the minarets of the two countries.The research concludes that the minarets building in Yemen and Egypt has been influenced by the prevailing patterns in the Muslim world, although the impact is limited in the minarets of Yemen, where the local character of the region has been overwhelmed, with a multitude of non-Yemeni-ruled areas, which have produced different patterns at the same stage, and the reciprocal effect has emerged in Minarets building in the two countries in some stages.}, keywords = {}, url = {https://jesaun.journals.ekb.eg/article_115006.html}, eprint = {https://jesaun.journals.ekb.eg/article_115006_8d5d0df86982030bc7692b4067388af0.pdf} } @article { author = {ABDELSABOUR AHMED, INAS}, title = {HERITAGE BUILDING ADAPTATION: DECISION-MAKING FOR CONTEMPORARY INTERVENTIONS}, journal = {JES. Journal of Engineering Sciences}, volume = {46}, number = {No 6}, pages = {719-737}, year = {2018}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2018.115007}, abstract = {Existing old buildings were considered as the city’s culture reminder. By the time, they could be kept via adaptation for contemporary usages. That adopting considered the context of the environmental, social and economic idea of the prior eras, related to the building’s life cycle, that guided by local solutions. This paper started with the adaptation process definition with an evaluation of a number of building’s state to bring out the different potential outcomes for discussing the future adaptation possibilities, especially that known as “alterations and extensions”. Therefore, by rethinking of the new addition’s integration into the heritage buildings will support the heritage value and fit new functions to present innovative design process approaches in the field of heritage preservation’s design. By analysing some case studies, the study achieved some criteria for designing the alterations and extensions by making them an effective component in the design of old heritage buildings. And finally applying these principles to demonstrate its efficiency.}, keywords = {Adaptive Reuse,Alterations and Extensions,Building Intervention,In-Use Adaptation,Cross-Use Adaptation}, url = {https://jesaun.journals.ekb.eg/article_115007.html}, eprint = {https://jesaun.journals.ekb.eg/article_115007_60e04dde66bc4262cfbd6ed32384865d.pdf} } @article { author = {ABDIN, AHMED and EL DEEB, KHALID and A.M. AL-ABBASI, SHAHAD}, title = {EFFECT OF GREEN ROOF DESIGN ON ENERGY SAVING IN EXISTING RESIDENTIAL BUILDINGS UNDER SEMI-ARID MEDITERRANEAN CLIMATE (AMMAN AS A CASE STUDY (}, journal = {JES. Journal of Engineering Sciences}, volume = {46}, number = {No 6}, pages = {738-753}, year = {2018}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2018.115008}, abstract = {In Jordan, residential buildings consume up to 48% of electrical energy, a significant amount of almost the half of energy goes for heating. Green roof is one of the passive techniques that improves energy performance. This paper examines the energy performance and Carbon Dioxide (CO₂) reduction of the green roof technology in the semi-arid Mediterranean climate of Amman by considering a typical apartment in Jordanian residential building as a case study. The effect of soil thickness, air gab and irrigation were determined for the performance of extensive green roof regarding to their plant. Malva Parviflora has been chosen for study. The base case model annual energy consumption has been determined by DesignBuilder software without a green roof installed. The result shows that installing extensive green roof saves annual energy consumption up to 14.25%.}, keywords = {Extensive Green Roof,Residential building,CO₂,Reduction,Energy efficiency,Amman,Semi-Arid Mediterranean Climate}, url = {https://jesaun.journals.ekb.eg/article_115008.html}, eprint = {https://jesaun.journals.ekb.eg/article_115008_d5cb5c5974e2ef608eea8b96589bb23b.pdf} } @article { author = {M. Khodeir, Laila}, title = {EVALUATING THE ROLE OF PROJECT MANAGEMENT EDUCATION TOWARDS ENHANCING ARCHITECTURE STUDENTS COMPETENCY SKILLS}, journal = {JES. Journal of Engineering Sciences}, volume = {46}, number = {No 6}, pages = {754-766}, year = {2018}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2018.115009}, abstract = {Teaching project management to Architecture design students is quite challenging. Project management education on university level has to equip students with core competencies, the so-called 21st century ones, which should enable them to cope with market needs. In addition, it has to make full use of the architecture students existing skills. Thus, this paper aims at evaluating the role played by project management education towards the enhancement of the competencies of Architecture students. To achieve the aim of this paper, a survey questionnaire was applied on senior students who have been taught the PM course for 8 successive years at Ain Shams University. Students who attended the course since 2010-2017 participated in the survey, where they had to assess the course after 6 to 1 year(s) of graduation. The number of respondents was almost 300. All participants reported mostly positive impact about the teaching methods in the PM courses. Among the core skills that have been realized through teaching the course were critical thinking, communication, collaboration and creativity.}, keywords = {Project Management (PM),education,Competency skills,Architecture Students}, url = {https://jesaun.journals.ekb.eg/article_115009.html}, eprint = {https://jesaun.journals.ekb.eg/article_115009_1098ebeb62da8f05ba6d850b6f8d085c.pdf} } @article { author = {Emad Abdelazzzim, Mohammed and Abdelsame Eid, Mohammed and Mohammed Hassan, Noby}, title = {INDICATORS AND VARIABLES OF QUALITY DESIGN FOR URBAN COMMUNITIES}, journal = {JES. Journal of Engineering Sciences}, volume = {46}, number = {No 6}, pages = {767-796}, year = {2018}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2018.115012}, abstract = {The emergence of the Industrial Revolution had a great impact on the emergence of many ideas and theories in an attempt to reach the urban design quality of Urban Communities, But It focused mostly on the Physical aspects only, After the emergence of the concept and science of urban design in the middle of the twentieth century, Many theories have begun to adopt and introduce a new set of dimensions on the design of urban communities to achieve the quality of urban design for Urban Communities, So Many countries have tried to adopt the policies of these theories on the ground, At the local level, We find that urban communities are going in Unclear intellectual trends in an attempt to apply these concepts. Thus, the problem of research has emerged to find a general framework encompassing common general principles of contemporary urban design theories to try to use them in the design of existing urban communities or to evaluate existing ones.The research uses descriptive analytical methods to analyze the concepts and dimensions of the quality of urban design, And study the theories of urban design, especially contemporary urban design theories and the relationship between them, And then The research used the deductive approach to conclude common general principles of contemporary urban design theories to produce a general framework of general common principles to achieve the different dimensions of the quality of urban design, This framework could be expanded through future research into a tool for measuring the quality of urban design of different local urban communities.}, keywords = {}, url = {https://jesaun.journals.ekb.eg/article_115012.html}, eprint = {https://jesaun.journals.ekb.eg/article_115012_70b36c8b8d9b29a50da6e48529b97f3e.pdf} } @article { author = {Ahmed Rizk Aly, Moammed}, title = {DEVELOPMENT VS. HERITAGE: THE CONFLICT THAT MAY OCCUR BETWEEN THE REQUIREMENTS OF DEVELOPMENT PROJECTS AND THE NECESSITIES OF ARCHITECTURAL HERITAGE CONSERVATION}, journal = {JES. Journal of Engineering Sciences}, volume = {46}, number = {No 6}, pages = {797-819}, year = {2018}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2018.115014}, abstract = {Despite the importance of heritage places and the efforts being made to protect them, it may sometimes occur that the priorities of their conservation conflict with the requirements of development and investment projects that may be established near or in the same area of such places to fulfill some necessary needs for the society (such as constructing dams, roads, bridges, infrastructure networks, digging canals, mines, etc.) or to achieve some financial gains for the owners or investors (such as constructing residential complexes, hotels, commercial centers, office towers, entertainment places, etc.). In these cases the heritage of the society, which should be protected, stands against the development, which promises the people a better future. In this conflict the victory of one party will inevitably harm the other and society as a whole. There is no doubt that any development at the expense of heritage conservation is unacceptable. Similarly, any conservation practices which do not take into account the current and future needs of the surrounding society will make the heritage appears to be an obstacle to the development. This is the problem of this research, which aims at discussing the various factors and dimensions of this conflict, as well as the solutions that can be applied to resolve it, through the analysis of a number of international experiences and attempts related to the subject, to formulate a treatment strategy applicable in such conflict cases.}, keywords = {Develompent,investment,Architectural Heritage,Conservation Policies,Adaptive Reuse}, url = {https://jesaun.journals.ekb.eg/article_115014.html}, eprint = {https://jesaun.journals.ekb.eg/article_115014_91e212612450811961bb1e28660b0747.pdf} }