FAQ 000740 ZH

Calculation RF-CONCRETE

Which criteria are used to defined the "top" and "bottom" reinforcement?

回答

If the global Z-axis shows downward, the following definition applies:

"Bottom" is on the surface side showing in the direction of the positive local z-axis of the surface, and "top" on the side of the negative local z-axis.

(Please note that the capital letter for the global axis Z and the lowercase letter for the local surface axis z.)

If the global Z-axis shows upward, the definition is reversed: The bottom reinforcement is on the side of the negative z-axis of the surface, the top reinforcement on the side of the positive z-axis of the surface.

The local surface axes can be turned on in the Display navigator via "Model"->"Surface."

The local z-axes can be quickly reversed:

Right-click the corresponding surface and select "Reverse Local Axis System." In this way, you can unify the reinforcement layers of walls.

It is recommended to define the global Z-axis as downwards when creating the model. In this way, you can ensure that the local z-axes for surfaces in the XY plane show automatically downward and therefore the bottom reinforcements are on the bottom side of the surfaces.

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