بلكي نيوز
اطلق الخبير المهندس عبداللطيف البزور على صفحته الخاصة عبر تطبيق الفيسبوك تحذيرا حول المخاطر الممكن ان تسبب بها الرافعات فوق ابراج عمان بعد ان بقيت على وضعها منذ حوالي خمسة سنوات حيث قال :
ابرج الدوار السادس؟؟؟؟
ماذا بعد وما حال هذا المشروع وما حال هذه الرافعات المعدنية الجاثمة
على صدورنا سنوات طويلة وماذا ننتظر واليكم بعض “خواطري” الفنية سوف اكتب احيانا باللغة الانجليزية لسهولة التعبير
هل ننتظر حدوث ما لا يحمد عقباه؟؟؟؟؟؟
- fixed cranes are kind of steel structures built on site to ease work ability and lifting of construction material
- they consist of hundreds of steel elements assembled by thousands of steel bolts (براغي معدنية)
- These cranes are designed and constructed for the life of construction of a project 1-2-3-4 years
- these steel structure (cranes) are out door structures and subjected to climate changes such as wind, rain, temperature, humidity ….etc.
- They are subject to some kind of live and frequent loads such as wind, vibration due to traffic movement, shrinkage, expansion creep of hinges….
6 Corrosion of the material itself (steel) may happen very easy
7 if the corrosion starts it will propogate in the material same as any disease
8 the corrosion may start in spots where the steel was not galvanized such as internal faces of wholes close to bolts
9 corrosion of wholes causes deterioration of steel around bolts this leads to enlargement of whole diameter the provide more space between bolts and wholes means movement due to loads then more and more loading which means more and more lateral movement
10 by very long time fixation will be not sufficient
- are we waiting for failure ???
- are we waiting for catastrofic end of the story????????????
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