The top and bottom reinforcement seem to be reversed in the graphic.
Background: Each surface has a local coordinate system in RFEM (x,y,z).
The coordinates x and y are in-plane, z runs perpendicular to the surface.
The top and bottom side of a surface is determined by the direction of the z-axis.
The direction of the local z-axis determines the bottom side of a surface. Usually, this local z-axis is orientated downwards. Depending on the defined direction of the boundary lines and the sequence in which the lines were clicked., it is also possible that the local z-axis points upwards.
It is easy to correct this. First, display the local surface coordinate system.
To do this, proceed as follows:
Go to the "Display" navigator on the left. Here, you can set all display properties in a tree-like structure.
Open the entries "Model" -> "Surfaces" and select the "Surface Axis Systems x,y,z" check box.
The bottom reinforcement is on the side of the slab, where the z-direction is positive.
To reverse the direction of the local z-axis, click the corresponding surface, and then select the "Reverse axis system" option in the context menu.
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Progettazione delle aste e delle superfici di cemento armato (piastre, pareti, strutture piane, gusci)