A Question About The Typical Beam...

[gencideci]

In our region, the building inspection requires rib beams for floors over 4 meters. To do this, the method every engineer uses is to define the rib as a cassette and pass it through the middle of the rib with a 12 cm rib beam. First of all, I want to know if this method is correct. because I saw that no one applied it in the ide files uploaded to the forum by those who solved the ribbed structure, defined it as ribs and did not divide the floors above 4 meters with rib beams. Much more tonnage comes out in the way we solved, according to the definition as ribs. My second question is when I see that it says typical beam defect, specify typical beam in geometry control, if I define typical beams as the beam that divides these two, the tonnage of the building increases a lot. what is the reason of this? Take it easy everyone...

 

[Technicalman]

1) Yes, it is a correct method to set it as cassette. There are detailed posts about it on the forum. 2) The typical beam is not the beam that bisects the rib beams as you might think. It is a method of calculation. Check out the rib tiling from the training videos on the ide homepage. You can correct errors in the geometry control with the command set typical beam in the slab tab.

 

[HakanŞahin]

The building inspection in our region wants rib beams for floors over 4 meters. The method that every engineer uses to do this is to define the rib as a cassette and pass this beam through the middle of the rib with a 12 cm rib beam. I want to know if this method is correct.

Hello, Yes, this method is correct. Defining transverse teeth at a span of more than 4 meters is a condition given in TS500. The transverse tooth affects the moment capacity of the ribs, reduces the deflection, so you must take the transverse tooth into account. Therefore, you should define it as tape

because in the ide files uploaded to the forum by those who solved the ribbed structure, I saw that nobody applied it, defined it as ribs, and did not divide the floors above 4 meters with rib beams.

is your choice. Should it be applied? Yes, should it be implemented? You can ask why they don't apply it by message. Transverse teeth defined in the program are taken into account in the calculations. It transfers load to the beams to which it is attached and accordingly the load distribution changes. Be sure to check out the information on the subject at the following link:

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The way we solved it, there is much more tonnage compared to defining it as a rib. My second question is when I see that it says typical beam defect, specify typical beam in geometry control, if I define typical beams as the beam that divides these two, the tonnage of the structure increases a lot.

When transverse teeth are defined. It is taken into account in the calculation. It is normal for the quantity to be different. For your determination of "much more tonnage", it is very important that the typical tooth definitions in ribs/cassettes and the corresponding tooth numbers are correct. It affects the reinforcement quantity. It must be checked. Related to the typical tooth and transverse tooth definition Alternatively, see FAQ item 33.

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