Notional load definition

[Anonymous]

Guys, can you explain how notional loads are defined in Robot when using Eurocodes.

I have read the Eurocode guidance on notional loads and obviously the loads are defined differently from how they are defined in the British Standards.

Can you explain what the "conversion coefficient" is in Robot? How does Robot calculate the notional loading once the conversion coefficient has been entered?

We want to be sure that we have allowed a sufficient notional loading in our model.

Thanks.

[Artur.Kosakowski]

Please check:

http://docs.autodesk.com/RSAPRO/2014/ENU/filesROBOT/GUID-D2113A19-7704-49A2-910C-F11141BEF241.htm

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[Anonymous]

Thanks Artur. What I'm really trying to find out is what the conversion coeffiecient actually is. In the Eurocode guidance we have: θi = (1/200) x ah x am. So, is the conversion coefficient "θi"?

[Artur.Kosakowski]

I'm not sure if  I understand you correctly. Which point of Eurocode do you mean? Is it notional loads or imperfections?

[Anonymous]

Hi Artur,

I mean the notional load due to geometrical imperfections.

Clause 5.2 (5) of BS EN 1992-1-1:2004 states the following:

Note: The value of θ for use in a Country may be found in its National Annex. The recommended value is
1/200.

Just trying to find out if this is the conversion coefficient or not.

Thanks

[Artur.Kosakowski]

See the attached picture.

If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.

[Anonymous]

Is it not just "%" of load from case (which you are choosing above)

e.g. if you want have 5% it should be 0.005?

[Anonymous]

Hi there,

I can apply the special load (Notional Horizontal Force) but it seems the auto combinations does not include the special load in the combination because i can't find any in the load combination table, does that mean in Robot you have to manually combine the load if Notional Horizontal Force exists. I am wondering how Robot works regarding the Notional Horizontal Force.

[maosokvisal86]

I think it's about whether you check local analysis or global analysis.