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أسباب هجرة الأسر السعودية من أحياء وسط المدينة: مدينة الدمام حالة الدراسة

 دراسة للمهندس علي بن محمد السواط …………….تأتي هذة الدراسة في سياق التوجهات العمرانية المتخصصة التي ترى بأن تأهيل أحياء وسط المدينة والحفاظ على وصيفتها السكنية سيقود الى هجرة السكان الاصليين الى الضواحي وأطراف المدينة.

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FLEXURAL BEHAVIOR OF OVER REINFORCED HELICALLY CONFINED CONCRETE BEAMS

للكاتب Abdou Khalaf Mohamed Structural Eng., AL Azhar University, Qena, Egypt ABSTRACT Over reinforced concrete sections are brittle, and fail suddenly without warning, so it is restricted in codes of practice of concrete design. In some cases such as high rise building and bridges, it is useful to use a high percentage of steel reinforcement in concrete sections (over reinforced …

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FE ANALYSIS OF COMPLEX DISCONTINUOUS INFILLED FRAME DUE TO LOSS OF SOIL SUPPORT

للكاتبين Eman A. El-Shamy, Gouda M. Attia, Hosain M. Bondok and Shymaa M.Mukhtar Structural Eng. Dept., Faculty of Eng., Zagazig University ABSTRACT: In civil engineering practice, there is a variety of structures with interface discontinuities where the assumption of rigid interconnection between the contact surfaces is questionable. The infilling wall-frame-soil interaction problem is one of complex discontinuous and jointed structural …

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USING RECYCLED BUILDING IN HOT ASPHALT MIX

للكاتبين Manal Abd Alla Ahmed , Mahmoud El-saied Solyman Zagazig University ABSTRACT As a result of reconstruction of existing buildings and pavements, the amount of demolition materials is increasing every year. At the same time approval of additional facilities for waste disposal or treatment are become more difficult to obtain. Furthermore increasing restrictive environmental regulations have made waste disposal more …

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ANALYSIS INFLUENCE OF K0 COEFFICIENT ON THE DESIGN OF TUNNELS

للكاتبين M. Bensmail, S. Benmebarek, M.Chadli Department of Civil Engineering, University Mohamed Khider – Biskra, Algeria ABSTRACT In urban areas, the strong concentration of the pre-existent sensitive structures (buildings on deep or surface foundations, drain…) returns underground work more delicate. For the designer, it is necessary to be worried by the effects of the excavation on the existing medium and …

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MECHANICAL PROPERTIES OF SUBJECTED CONCRETES A NATURAL TREATMENT BY STOVING BY USING SOLAR ENERGY

للكاتبين BENAMMAR Ben khadda 1, MEZGHICHE Bouzidi 1Department of civil engineering, University Mohamed Khider, Biskra, Algeria. ABSTRACT The discovery of hydraulic cement made it possible to the manufacturers to reach a malleable material at the fresh state and having the properties of the stone at the hardened state. The neat cement grout plays the part of binder and allows the …

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L1-NORM ESTIMATION FOR CORRELATED OBSERVATIONS

للكاتب Ashraf Aly Elkoushy Surveying and Photogrammetry Civil Engineering Department Faculty of Engineering Suez Canal University– Port Said – Egypt ABSTRACT For correlated observations an L1-norm adjustment can be achieved, if the original observations are transformed into Helmert’s equivalent observations which are no more correlated and posse’s unit weight as can be expected by factorial analysis. The objective function then …

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A Comparison of Polygons from Multispectral Images by Using Multispec Software and GIS Tools

للكاتبين   . Ashraf A. Elkoushya & Ahmed El-Aksharb a) Civil Engineering Department – Faculty of Engineering – Suez Canal University b) Public works Department -Faculty of Engineering – Cairo University ABSTRACT The classification of data collected by a multispectral sensor had done by using the multispec software. The data was analyzed through a number of processing steps to achieve …

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STRAIN BASED SECTOR ELEMENTS FOR THE ANALYSIS OF PLANE ELASTICITY PROBLEMS WITH CIRCULAR CONTOUR

للكاتبين  N. MEZIANI1, M.T. BELARBI2 1Master. Department of Civil Engineering, University of Biskra  2Professor. Department of Civil Engineering, University of Biskra ABSTRACT The principal objective of this work is to evaluate and test the strain based sector elements for the analysis of plane elasticity problems with circular contour. We present some sectors elements with five nodes; have two degrees of …

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METHOD FOR THE COSTS ESTIMATION OF STEEL STRUCTURE PRELIMINARY DESIGN SOLUTIONS IN AN OPTIMIZATION PROCESS

للكاتبين Mohamed Mehdi BITAM 1, Mohamed Tahar BELARBI 1, Salim BITAM 2 1 Civil Engineering Department, Mohamed Khider University of Biskra, Algeria. 2 Computer Sciences Department, Mohamed Khider University of Biskra, Algeria. ABSTRACT: In steel construction, structure optimization during preliminary phase of design, when it’s based on the overall structure cost criterion which integrate the costs of materials and execution (fabrication …

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