Slab reinforcement analysis and verification

[Anonymous]

Hello,

I have created a model for slab reinforcement design and crack verification, but there are few things which are not really clear to me.

First of all, I have created the model, applied the load, created ULS and SLS combinations and run the analyses. Then I have set the reinforcement parameters for slabs and walls and run the calculations in the "Slab - required reinforcement" section. Finally, according to the minimum values I got, I have manually input the provided reinforcement.

Now, I was wondering why if I go back to the "Slab - required reinforcement" section and run the verification the results don't change even if I change the provided reinforcement. Also, I have noticed that the results in terms of deflections are basically the same of the ones obtained by a linear analysis, but the deflection obtained by the reinforcement calculations are much higher (running the calculations I get stiffness factors up to 8, while running the verification they are very close to 1).

Can you please advise on this? It is my understanding that in the calculations the creep coefficient gets taken into account, is it different for the verification?

I have attached the model file.

Many thanks,

Danilo

[Artur.Kosakowski]

Please watch the recording of the 5th Robot webinar available from:

http://forums.autodesk.com/t5/robot-structural-analysis-forum/robot-structural-analysis-webinars/td-...

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]

Hi Artur,

Thank you for the reply, I will have a look at the webinar.

In the meantime, could you please have a look at the model? I have noticed that, even if I set the provided reinforcement calculation to automatic, when I run the calculation I receive errors saying that in some areas the provided reinforcement is 0, therefore I can not check the deflection map for provided reinforcement.

Thanks,

Danilo

[Artur.Kosakowski · Accepted solution]

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.