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FAQ 002823 EN 8 April 2019

Paul Kieloch Add-on Modules RFEM RSTAB FOUNDATION Pro RF-FOUNDATION Pro

In FUND Pro, I get extremely large foundations for my structure or have to enter a very high ballast, so that the proof of the foundation twist is observed. What can this be?

Answer

Please check the input of the load in the input dialog "1. 4 Load "in the register" Characteristic values ".

One possible source of error is that you have selected the individual load cases (eg dead weight, wind, etc.) for the design. Possibly. these load cases are then additionally set as "Constant". See Figure 01.

The program will now apply both load cases for the detection of the 1st core width.
This is not correct. For the proof of the 1st core width, only the load from a continuous action is to be used.

For the proof of the 2nd kernel width, the load has to be determined from a "permanent and changeable combination". This means that you need either a load combination (LK) or a combination of results (EK). The input of a load case (here only wind) is also wrong, since hiebei the low-acting vertical component of the ballast is missing. Therefore, you get too large foundations or have to enter a high load as a "constant load", so that the proof is met.

So you should create for this situation a LK in which the "constant and variable actions" are summarized and these start for the design in FUND Pro. Pay attention to the assignment of this LK in a "constant + variable action". See Figure 02.

Keywords

Foundation twist Eccentric load Core length Ballasted Variable action

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