Relative floor offsets and stapling in beamless slab flooring

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yunussacikk

New Member
hello, in the project I was asked to solve in the form of a beamless plate, I could not pass the relative floor offsets and punching. Concrete c35 slabs are still not 25 cm, can you examine it?
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Re: Relative floor offsets and staples in slab flooring without beams Hello, In general, the determinations and suggestions for data entry in your project are as follows; - It would be appropriate to make a solution according to the semi-rigid diaphragm acceptance in non-beamed floors. - It is seen that there is no flooring in the area where the S12 column is located on the basement floor. For this reason, when creating the floor in the section between DF and 1-7 axes, create it with the floor edge instead of the floor gap. -In order to form floor nets in semi-rigid solution and to connect them to columns and curtains; It would be appropriate to divide the floors in the basement with the floor edges as in the example. Create the gap at the edge of P21 on the ground floor with the slab edge. On the mezzanine and upper floors, connect the slab edge on the left side of the S2 column from the upper left corner of the column. - If a pile raft foundation is to be built, the soil on which the pile sits must be defined in accordance with the soil survey of the layers. (Pile solution can be made on cohesive soils in the program.) - If the column caps are to be applied on site, they must be defined. Columns connected to beams (eg S10) do not need to define column headers. Good work
 
Re: Relative floor offsets and staples in beamless slabs In addition, 1st and 2nd in TDY. There are sanctions for beamless floors in earthquake zones. Alphas rate in your project is below 40%. According to the articles 2.5.1.4, 2.5.3 and 2.5.4 in the earthquake regulations, you should evaluate your project and decide whether it is feasible.
 
Re: Relative floor offsets and staples in slab without beams I have an irrelevant question, why is there a need for such a design? Why isn't the classic 30 cm hollow floor stone chosen instead of the 25 cm plaque?
 
Re: Relative floor offsets and staples in non-beam slab flooring 30 cm hollow floor slab ?. In general, I know 32 cm is made. 25 cm filling + 7 cm flooring thickness total 32 cm. From the same point of view, I sometimes ask: Why don't they make 25+10 = 35 cm instead of 25+7=32 cm beam height (I usually try to do so) There is a 3 cm difference between 32 cm and 35 cm. This increases the beam height of 3 cm and accordingly the beam inertia significantly. Of course, there may be problems with floor heights at the same rate. Where floor height is not a problem, the engineer can make the choice and orientation. But for example, in a place where the floor height is 270 cm; 270-35=235 - 7 cm plaster screed etc. 228 cm, which is a very low value. This is where the architect comes in. 270 - 25 = 245 - 7 = 238 would be an acceptable height. If you do the plaster, screed, mold, etc., maybe you will gain 2 cm more. These can be significant numbers. In addition, the working and load transfer method of a system with 30 cm beams and a system without 25 cm beams is different.
 
Re: Relative floor offsets and staples in slab without beams As I understand it, the height of the floor is all an issue -
Also, the way a 30 cm beamed system and a 25 cm beamless system work and transfer loads are different.
Click to expand...
You said that the beamless system will distribute more homogeneously. In the beamless system, more concrete will be poured and the weight of the building will increase. I am confused frankly.
 
Re: Relative floor offsets and staples
"mkrts88":1vfv2blg" said:
as far as I understand, the height of the floor is all an issue -
Also, the working of a 25 cm beamless system with a 30 cm beam system and the load transfer method is different.
Click to expand...
You said that the beamless system will distribute more homogeneously. In the beamless system, more concrete will be poured and the weight of the building will increase, I am confused frankly
Click to expand...
1- In theory, hollow floor slab is lighter, but in practice, with beamless slab hollow floor slab is almost the same 2- There are serious problems with hollow slab in terms of workmanship, but since it is simple, tiling without beams is better, of course, with beams :D 3-You cannot solve the slab without beams after 5.5-6.0 meters without increasing the thickness or without post-tensioning, but in hollow slab, the 10-meter span We have friends trying to solve it with 50/32 (concrete c20 and lots of stud beams) beams :D
 
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