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they would also be in charge of autocad design, produce new maps and update the galileo system on assets and materials in the region.
وكما يتولون مسؤولية التصميم التلقائي بمساعدة الحاسوب (auto cad) وإنتاج خرائط جديدة وتحديث نظام غاليليو المتعلق بالموجودات والمواد في المنطقة.
assessment and evaluation of existing telegraph tower the assessment and evaluation of existing telegraph tower includes the following stages • preparation of detail as-built drawings (superstructure and substructure) • on site visual inspection of steel tower • field and laboratory tests • global 3d finite element modeling, analysis and design of steel tower preparation of detail as-built drawings • contractor should prepare complete set of structural drawings (as-built drawings) on autocad. • the structural drawings should be complete in all aspects. the drawings should include exact layout, detailed plan, elevations of steel tower, detailed dimensions and cross sections of all elements of steel tower, type and detail of connection, exact location and type of foundations, full structural detail and type of connection between steel tower and foundations. on site visual inspection of steel tower • the contractor should conduct field visits to carefully examine each and every element of superstructure and substructure of steel bridge. • steel tower should be checked for stability and movement issue in transverse and vertical direction. all structural steel members and connections should be inspected for presence of corrosion. if the effect of corrosion is deep, members must be examined for loss of section with more advanced test procedures. • steel tower should be checked for any loose and missing bolt, any damaged and missing members, any fracture, bends and defective and cracked welds. • all concrete structures including all footings must be checked for any type of defect and deterioration. • consultant should submit detailed visual inspection report which must include but not limited to, photographs and videos showing general condition of steel tower, areas with visible defects like concrete cracking, concrete delamination, exposed corroded reinforcement, previous repair work, corroded steel members, damaged and bent up steel members, condition of weld connections and bolt connection. • based upon visual inspection report, consultant should prepare and submit initial structural assessment report with conclusion and recommendations. field and laboratory test • if needed, contractor should carry out all necessary field and laboratory tests in order to assess the actual condition of every element of steel tower. different tests but not limited to the following, should be performed, • concrete coring for the compressive strength of core • ground penetrating radar (gpr) • half-cell potential test of corrosion or steel bars • concrete coring for chloride and sulphate content • carbonation depth • crack assessment • direct sounding test • ultrasonic test • weldability test for steel • test for weld and other connections • sample extraction (steel members) for different material properties. • contractor is responsible to arrange all services, all devices and all laboratory and field equipments which help him to perform different. consultant is responsible to implement all safety measures to avoid damage to human lives, government and public property. • the contractor should submit complete field and laboratory test report and should clearly write his conclusion and recommendations based upon field and laboratory test results. global 3d finite element modeling, analysis and design • if needed, based upon the as-built drawings, results of visual inspection report, field and laboratory test, contractor should perform global 3d finite element computer modeling, analysis and design of existing steel tower. • in global 3d computer analysis of each existing steel tower, the tower should be modeled as per actual condition. any damage to structural members of tower should be consider in computer modeling in proper way to allow effects of these damages on the final analysis results under different load cases and combinations. • contractor should submit global 3d finite element computer model and complete structural design calculation report. based upon the findings of visual inspection reports, field and laboratory test results and global 3d computer analysis of steel tower, the contractor should submit his emendations and rehabilitation report for steel tower (if needed). construction of barrier wall around the telegraph steel tower • contractor should submit at least three architectural proposals along with structural details for proposed barrier wall around the steel tower. • contractor should prepare and submit the shop drawings for proposed barrier wall before construction.
تقييم وتقدير برج التلغراف الحالي يشمل تقييم وتقدير برج التلغراف الحالي المراحل التالية • إعداد التفاصيل كرسومات مبنية (البنية الفوقية والبنية التحتية) • الفحص البصري في الموقع لبرج الصلب • الاختبارات الميدانية والمختبرية • نمذجة العناصر الثلاثية الأبعاد المحددة وتحليلها وتصميمها إعداد التفاصيل كرسومات مبنية • يجب على المقاول إعداد مجموعة كاملة من الرسومات الهيكلية (كرسومات مبنية) على
Last Update: 2022-09-17
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