Fire Design - HS steel column filled up with concrete

[Anonymous]

Hi,

about fire protection... I have hollow section steel columns that are filled up with concrete (no protection in the outer surface). Is it possible to design columns this way in Robot? So in a fire situation concrete basically keeps the temperature of the inner surface of a column lower, and thus increases the time the column can maintain it's strength. Thanks

[Rafal.Gaweda]

[Anonymous]

Thx Rafal,

Does it matter which encasement type i choose? I mean, isn't there a difference whether the concrete is inside or outside of the profile? it affects the thickness aswell. How can i manage that or does the profile i wish to use determine it (e.g. RH or I-profile)?

[Rafal.Gaweda · Accepted solution]

Does it matter which encasement type i choose? I mean, isn't there a difference whether the concrete is inside or outside of the profile? 

Only "outside" is considered in design in Robot.