We are looking for answers to the following questions

[muhammetboztoprak]

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There are rules taken by the municipality in the attached file. As a result of the discussion we had with our colleagues, we are looking for answers to the following questions 1-do you need column and floor strip when finite elements are used? 2- Is a single axis of calculation (in x and y directions) in a rectangular plan sufficient for slab without beams? 3-Do we have to pass the calculation axis where the columns are, or can we pass it anywhere 4-Do we need the punching reinforcement after the punching is met only with concrete? 5-Can spaces be left next to vertical carriers such as non-beamed floor curtains? 6-Do the columns have to be on the same axis in non-beamed flooring? (due to the plot) Can we make cassette flooring by dividing a part of the project with 20/36 minimum beams in 7-joist flooring? Will this project be a mixed system?

 

[MaFiAMaX]

Hello, 1- Column and floor strip are used in the frame method. The floor is considered as a beam of certain widths. Since ideCAD solves with finite elements, this system is not used. There is this perception in the market, as some domestic software cannot solve with finite elements in their previous versions, and they require modeling elements such as "mushroom beams". No results needed. 2- It is enough to pass through the middle of the opening, to the point where the floor will have the most difficulty. If there are points with a sudden increase in internal forces or points that change sign by looking at the displacement graph, an additional axis of calculation is passed. 3- Necessary upper reinforcement in the column is calculated and drawn by ideCAD. It is not mandatory to pass over the column. However, if it is suspected that the software is not giving accurate results in very complex geometries, it is useful to draw an additional axis of calculation. 4- None. Already meeting the punching strength with pure concrete Prof. It is also recommended in Dr. Zekai CELEP book. As the concrete volume decreases as the reinforcement is placed, it is necessary to maintain the balance. Of course, when meeting with concrete, one should not meet from the border. Personally I try to keep it above 1.5x the stamina/strength. 5- Depends on the curtain size. For example, 30x100 shafts running along the curtain should not be built next to the 30x180 curtain. It should not be on the curtain ends either. But it's hard to give an exact size for this unless you calculate exact stapling. It shouldn't look big. It should not be opened unless absolutely necessary. For example, I think there will be no problem with a 50x50 shaft at the edge of the 30x250 curtain. 6- No. The important thing is that the openings are balanced. THIS APPLIES TO ANY FLOORING SYSTEM.

 

[HakanŞahin]

Hello, 1. You do not need to enter these strips as pillow beams. After analysis with finite elements, the tensile and compression zones in the plate are determined and equipped for all loading combinations. Reinforcement is calculated at each point of the plate and in both directions, both at the bottom and at the top. 2. It is sufficient for the working distances of the calculation axis to cover the entire plate. However, it may not be economical. The program determines the required reinforcement within the working distance of the axis from the point where the calculation axis passes. You can design more economical reinforcement by defining more than one calculation axis and arranging the working distances in the minimum non-working, L type, angled or irregular carrier system plates. 3. No you are not. If you see fit, you can define more than one account axis from anywhere, depending on the answer I gave in 2. 4. There is no need. 5. Space is considered as a space in the finite element model and no finite element is created in this space. By examining the effects of the finite elements around the curtain, it should be observed how the gap affects the punching. 6. It is not necessary, but it should be preferred. 7. You can make the slab thickness conditions by considering the beam height conditions attached to the slab and providing the ductility conditions. The system becomes a beam plate system. Being mixed or highly ductile is the same as for other beam buildings.