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FAQ 002613 EN-US 03/07/2019

Wieland Götzler Add-on Modules STEEL EC3 RF-STEEL EC3

I measure a simply symmetrical cross - section, for example a T - section, and receive the warning "Unmeasurable - ER056 The general procedure can only be used for I - sections". Why? What can I do?

Answer

Since the procedure 6.3.3 EN 1993-1-1 applies to components with bending and pressure only for double-symmetrical cross-sections, the add-on module verifies these components with General Procedure 6.3.4 EN 1993-1-1. This method is applicable for arbitrarily single-symmetrical cross-sections, in Germany, however, only I cross-sections are permitted,
why the warning appears here.


You can perform a proof of stability according to theory II. Order as a cross-sectional proof,
which is possible with the additional modules FE-BGDK or STAHL arching torsion.
Alternatively, in the "National Annex" dialog, you can also accept the General Procedure for non-I cross-sections, but hereby deviate from the national annex.

Keywords

non-I cross sections warning non-measurable proof of stability steel construction replacement bar method general method 2nd order theory Eurocode 3 EC3 ER056

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RSTAB Steel and Aluminum Structures
STEEL EC3 8.xx

Add-on Module

Design of steel members according to Eurocode 3

Price of First License
1,480.00 USD
RFEM Steel and Aluminum Structures
RF-STEEL EC3 5.xx

Add-on Module

Design of steel members according to Eurocode 3

Price of First License
1,480.00 USD