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Frequently Asked Questions (FAQ)
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As soon as at least one member with a circular cross-section is selected for design, A s, top and A s, bottom are no longer displayed.
In this case, it is recommended to create your own design case for the circular cross-sections (in the menu option "File" -> "New Case") so that they are specially designed.
The circular cross-sections should not be selected in the design of the other cross-sections so that A s, top, and s, can be selected from the result navigator at the bottom .
AnswerIn RF-CONCRETE Surfaces, the "top" or "bottom" position is controlled by the orientation of the area's local coordinate system.See also the FAQ000740This means for a wall that As, below or As, above can either be the reinforcement on the outside or inside depending on the orientation of the local z-axis.Both values must be taken into account for the reinforcement planning.So the sum of A s, below + A s, above .
AnswerIn RF-CONCRETE Members (RFEM) or CONCRETE (RSTAB), the offset is considered by default when determining the provided reinforcement.The difference between required reinforcement with and without offset is displayed when you open the Results navigator window:- A s, -z (top)- A s, + z (bottom)- A s, -z (top), comp.- A s, + z (bottom), comp.display results.In A s, -z (top), comp. and A s, + z (bottom), comp. the offset is included.See Figure 1.For the provided reinforcement in RF-CONCRETE Members or CONCRETE, the program considers the anchorage length for "straight" iron by default. The input can be found in the input window 1.6. See Figure 2.The anchoring length becomes from A s, -z (top), comp. and A s, + z (bottom), comp. determines. Thus, the offset is also included here.
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