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Eurocode 3 - Accepted max deflection?

Eurocode 3 - Accepted max deflection?

Eurocode 3 - Accepted max deflection?


What's the accepted maximum deflections of a beam according to Eurocode 3?

Back in school I was told that L/400 is a good advice to follow. But where does that statement origin from?

(I know EC5 have chart for this, but I haven't seen anything like that in EC3)

Thanks in advance!

"If you're not part of the solution, you're part of the problem" - John McClane,Die hard

RE: Eurocode 3 - Accepted max deflection?


The base version of EC3 doesn't specify the deflection limits (see sections 7.2.1 and 7.2.2). These are specified in each country's National Annex.

The following documents from the ACCESS Steel Database provide these limits as well (these are simple to find in google):
NCCI 01: Vertical and horizontal deflection limits for multi-storey buildings
NCCI 35: Practical deflection limits for single storey buildings

Hope it helps

RE: Eurocode 3 - Accepted max deflection?

The best option is to ask the client. If he/she has no idea them you should use recommended values, like L/200 for total deflection and L/250 for live loads.

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