How to design reinforcement for RC T slab (T beam) in Robot?

[Casparov]

Hi

I'd like to compose a concrete slab with beams underneath: the beams are spanning between columns, and should work together with the slab.

What's the best way to implement this in Robot?

At the moment, I've defined a slab (let's say 250mm high), and beams (also 250mm high) with an offset so they "touch" the bottom of the slab with their upper part. The total build up will be 500mm. Is this correct, or is there a different method to define a slab with beams at predefined locations?

Thanks!

Artur Kosakowski edited the topic for better findability and marked posts as the solution. If it did not work as an answer, please post your reply in this thread so that I can unmark the solution. Artur Kosakowski

[Μηχανικος]

With Robot 2016 coming out soon, did Autodesk account for the monolithic deign of T-beam and slab?

[kevokim]

If only we could get this in English.

[Artur.Kosakowski · Accepted solution]

Hi @Μηχανικος

You may want to check the tool @Romanich has generously created for us:

(API) Macro: Creation of quasi T & L RC beams

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.

[kthurman]

I applied this method using @Romanich API am a little skeptical that the RC beam is picking up the correct loading from the slab. My beams are modeled in the same plane as the slab and a uniform planar load of 100psf live load is applied to the slab. Doing a quick hand calc shows that the RC beam is not picking up as much of the live load as I would expect it to. Is a surface uniform planar load the correct type to be using?

Thanks,

[Artur.Kosakowski]

Hi @kthurman

Have you included the fact that the slab takes part of the load too? In other words you should not calculate tributary area load on a beam and then calculate bending moment as for a beam acting alone.

If I managed to answer your question(s) press the Accept as Solution button please. This will help other users to find solution(s) much faster. Thank you.

[mike.kovacs]

https://knowledge.autodesk.com/support/robot-structural-analysis-products/learn-explore/caas/CloudHe...

@Artur.Kosakowski 

Does the above guidance on T-beams mean that some new calculation feature was implemented in 2021, to improve the T-beam design process in Robot?

[crossing fingers in hope]