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@HTURKAK Thank you. I used a GPR for the reinforcement location. I don’t have those info yet but I send the questions to the client. I also heard rumors about some heavy mobile crane during execution time. Need to dig deeper and find out if that’s the case.

@rapt You are corect, however, there are differences between bottom and top of the floor when it comes to limitations of crack widths. You would need more reinforcement to keep the crack widths to 0.2 mm rather than 0.4 mm(at the bottom)

@Enable Thanks for the good input. Yes, I noticed fewer cracks and narrower in most of the spans. Those cracks were mostly at the bottom of the beam and perhaps 5-10 cm up. Could you please elaborate on rhis or what exactly is the connection? I’m going to check on those points you raised...

@SWComposites CFRP strengthening most likely. But before that someone must be assume the mistake. While it is obvious a flexural issue the calculations doesnt show that you would need more reinforcement than what has been provided. The question is if the support reinforcement, or better said...

@HTURKAK The wall has no signs of cracking. It is reinforced with 2 mesh layers dia.12/100 plus extra long. bars 3+3 dia.25 at the base. I have detected the size and no. of rebars (not sure what is UT, RT). No idea where the lapping is done and it isn't documented either.

Another photo showing the cracks at the bottom of the beam

Hello and thank you for your help. Now to provide more details: 1) The structure is a 2-storey building meaning I have a plate on ground then a Floor #1 (where the cracking occurred) and a roof. On Floor #1 is to be a parking garage. On the roof future loading is to be traffic loads 20kN/m2...

The cracks are visible at the bottom as well; maybe not in the photo as it has been covered by paint. Aling the height of the beam (800mm) there are two extro longitudinal bars diam 16 mm and stirrups and stirrups di.16/100 mm. I have only performed a T-section analysis. Why do you think woould...

Here is one photo showing the cracking on the beam. Directly above the beam (approx. where the pipe goes) is the rc wall (red arrow in my original post)

Hello, I’m in the process of assessing a continuous cast-in-place RC beam in a structure. The beam is designed originally as a T-beam and carries typical loads in a parking garage. In one span (8-m-long shown in the sketch) there is a rc wall that transfers all the load from the upper stories...