Re: DOUBLE REINFORCEMENT REQUIRED ERROR IN FLOOR Hello, D6 tile at -245 seems to overlap with D69 tile on it. There is a problem with the finite element model. This problem has been fixed in the 8.600 version we are currently testing. Since the D6 slab is a very small slab, you can delete it and transfer the load to the K19 beam and finalize your analysis model. Make any necessary corrections to the drawings with 2D tools.