minimum beam dimensions

[serkankaradag44]

hello everyone, in a special project, I need to work on the dimensions of the beams below normal. I know that the height of the beams is taken as 3 times of the floor. I decided to work in 30/45 dimensions. Are these dimensions sufficient for a maximum span of 6 meters? Thank you.

 

[bedros]

We cannot say that 30*45 beams are sufficient for 6m. In order to be able to say that it is sufficient, first of all, it is necessary to know the loads that will come to the beam and the moment and shear forces that will occur in the beam under these loads must be portable by the section. We see this after analyzing the system and if it is insufficient, we increase the section. In short, we cannot say that 30*45 beams are sufficient for 6m span without knowing the loads.