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Old October 20th, 2014, 10:30 PM   #1
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Problems with skyscraper average floor height. Help!

Ok, so i started to play with AutoCAD some weeks ago and decided to do a 30 floors residential skyscraper as a start. So far, so good...
However, i didn't know the measurements properly, like the thickness of a wall, the floors height, door and window sizes, and etcetera. I found everything on internet, but this:

I still don't know these heights and i still have issues about it, issues that are jamming my first floor plan.
My main doubts are:
-The floor slab height for a 20-50 floor building. I know there is a beam on the middle, a top concrete layer and another concrete layer below to make the flooring and the bottom floor ceiling, respectively. But... How is the entire floor slab set (Beam, and concrete layers) height? I've got 20cm until now, but i think it is too thin to support a 40 floor building weight, isn't it?
-The floor wall height seen from outside. I know the wall seen from inside has something between 2,60-3,00m, but i've readed somewhere the floor height seem from outside is about 3,30m for residential skyscrapers and 4,00m for office ones. and what is on that void between the next floor slab and the ceiling?
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Old October 20th, 2014, 10:47 PM   #2
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Sorry guys, the topic went doubled. erase one of them please
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Old October 23rd, 2014, 08:59 AM   #3
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-The things between ceiling and slab are pipes system of wet area from a storey above, electrical system, fire sprinkle system, air conditioning system etc.
-The thickness of external wall is based on what type of wall and cladding you use normaly between 90-300mm, for an internal wall is around 90-100mm
-The thickness of the slap is depending on types of slab system you use and how far its span from collumns and beams usually around 150-250mm and the slab is not support the weight of building it designs only for support the weight of people, furniture or anything which directly sitting on it.
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Old October 24th, 2014, 04:20 AM   #4
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Thank you! But... I already know the external and internal wall thickness, i need the average internal and external wall height
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Old November 13th, 2014, 09:02 PM   #5
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That can vary quite a bit from one building to another.
Every country and sometimes even cities have their own regulations as well.
In my city for example, the minimum ceiling height for residentials is 2.60 meter.
Luxury towers have 3 meter.
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