From your structural point of view and experience, what is the largest span lengths can be achieved with hollowcore plank systems?
Dear Alaa Alsaad ... thanks for answering and for the drawing...
Its really very good to achieve 15m span, ... Do you have some pics that can posted her, .. because achieving largest span is really a challenge..
This depends on several variables as thickness,steel amount ,simply supported or continuous,etc.
Dear M.s.I. Choudhury .. Sure everything in design depends on several related variables.. But in general ... largest span is the main target of my question..
Thanks for answering...
Usually, the hollow core system is a simply supported, prestressed panels, with a concrete topping of 50 to 70 mm in order to get the diaphragm action (to transfer the lateral forces).
The key factors for the design are the span and loads. The thickness and number of strands (prestressed) will be varied based on these key factors. Please refer to the attached table for selecting the proper section to be sufficient for the desired span.
We did a project (in Dubai) for about 20 m spans using hollow core slab having 500 mm thickness.
Dear Alaa Alsaad .. thanks for answering and for the reference...
I really appreciate if you answer based on your experience in practical point of view, do you achieved such span length, or notice someone do...?
Dear Mr. Hussam, yes we did many times.... Nowadays, this system is common.
As a sample, please refer to the attached drawings for a project that been designed and constructed (by us) in 2008 ( the span was about 15 m). Also, please be noticed that the high strength concrete is usually used with such a big span (50 to 60 MPa).
Dear Alaa Alsaad ... thanks for answering and for the drawing...
Its really very good to achieve 15m span, ... Do you have some pics that can posted her, .. because achieving largest span is really a challenge..
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