Frame - deflection Autodesign

First, the program calculates the values of the deflections in all defined nodes. Then it compares these values with the limits of deflections. If the calculated values of deflections are smaller than the limits of deflections then the design of frames is OK and the SLS design stops. Otherwise the program starts a new Autodesign loops. The program checks both horizontal and vertical deflections in all nodes.  The following picture shows an example of typical critical nodes of a simple frame.

As specified the program checks the deflections at all nodes since the critical nodes differ per frame type.

There are different properties for this kind of Autodesign:

coef – h1/h2=coef*(check^exp-1)+1

the value used for the optimal design of CS based on the limit deflection (see formula)

exp – h1/h2=coef*(check^exp-1)+1

the value used for the optimal design of CS based on the limit deflection (see formula)

It is necessary to use a class as a type of load, otherwise the frame-deflection Autodesign will not work correctly.

1. Select node N2 (left eave node) from the first list and set values
   Horizontal deflection = 60mm
   Deflection up = 1000mm (criterion will not be used)
   Deflection down = 1000mm (criterion will not be used)
2. Select node N6 (right eave node) from the last list and set values
   Horizontal deflection = 60mm
   Deflection up = 1000mm (criterion will not be used)
   Deflection down = 1000mm (criterion will not be used)
3. Select node N5 (top node) from the last list and set values
   Horizontal deflection = 1000mm (criterion will not be used)
   Deflection up = 150mm
   Deflection down = 150mm

When all values are set the dialogue looks like:

The results preview is printed.