Fast Calculation Using RCs
Tips & Tricks
You can obtain a lot of load combinations, especially when using the automatic generation of combinations. These are automatically combined in a result combination (RC) with the OR operator as an envelope. Then, if you select one RC for design in RF‑/STEEL EC3, it may lead to a very long calculation time because the module calculates all combination options individually by default and then displays the results of the governing combination.
However, you can specify the calculation using the envelope in the detail settings of the module. This calculation is significantly faster since the program uses only the respective extreme values with the corresponding internal forces for the design in this case. This calculation might be incorrect if the RC includes a combination with multiple internal forces (for example N and My) just under the extreme values.
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