Should you design a flat slab in an earthquake zone?
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- เผยแพร่เมื่อ 30 มี.ค. 2022
- Flat slab is a type of floor construction that is frequently used in modern buildings. It can also be referred to as the flat floor, concrete flat floor, concrete flat sheet or flat plate. Basically, it is a floor without a frame in the building.
A flat slab construction is where the slabs directly rest on columns, without beams. If there is no drop at the column and slab meeting point, it is called flat plate and if there is a drop, it is a flat slab.
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As the slab is being flat doest it flatness affect the size, since their is no beam?
It will depends. When the flat slab without beam will need to support heavy live load or pattern load, then the thickness will increase to spread the load over a large area enough to prevent it from sinking. But you don't really necessarily need to increase the thickness of the flat slab in most cases; as it will just be waste of money as you will end up creating a sturdier structure.
The size of the column will increase and you will most likely be using a rectangular or circular column because the weight coming directly from the slab will rest on the columns.
Answer: NO!
You are right. But many designers still do this though