Columns Calculation Note

[faisal.aaouatif]

Hi all ;

Im on RSA2011 - SP6 and  i'm traying to work with Reinforment Columns module under EC8.

After exporting a column from RSA the remarks ive found are :

1. even if my live loads are defined on categorie "F" wich means a coefficient Psi-2 = 0.6 ; loadind table on the RC module shows 0.30 which not modifiable .... ( is there a way to correct it ? ) -- please See attachement

2.By examining the calculation Note ; i've found these remarks -- please See attachements ::

  2.a Problem in calculation final excentricity

  2.b Very big Moment magnificient coeffient

  2.c the effective creep is greater the conventional one wich i think not correct.

  2.d How does RSA determine the coefficient Js ? it is done after obtaining the reinforcement ?

Ive done calculation of this columns in comparaison on a excel sheet , an i obtained more reasonable values ie : Magnificient coeff = 2.834 ; effective creap = 0.226 ; [can send snap shot inf required].

I need to be figure out these pb -- have several columns to calculate

Thank you for help

[Artur.Kosakowski]

I have just noticed that you replaced the files in the different folder than I indicated:

Please replace the original files in C:\Program Files\Common Files\Autodesk Shared\Structural\COM\2012\DBAccess

replaced files in the directory "C:\Program Files (x86)\Common Files\Autodesk Shared\Structural\COM\2012\DBAccess

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[faisal.aaouatif]

sorry for the inconveniance but i couldnt find the DBacess directory  in the "C:\Program Files\Common Files\Autodesk Shared\Structural\COM\2012\" folder , so this is why i  used the Program Files (x86) one .... 

anyway (having no time to go further) , im trying to install rsapro2012 in a completly new machine on win7 pro 32 bits

i hope i'll get no problem ....

thanks a lot

[faisal.aaouatif · Accepted solution]

after new installation of rsa2012 things goes ok.

thx

[stroxy]

2.By examining the calculation Note ; i've found these remarks -- please See attachements ::

  2.a Problem in calculation final excentricity

  2.b Very big Moment magnificient coeffient

Hi Artur

I am having the same issues as above and following the thread, I think the explanation to the issue was somehow lost in the other details.  Could you please comment on that issue specifically?

[Artur.Kosakowski]

Stroxy,

Please check your acting axial force vs. the critical force for this column. My assumption is that you it is either very close or above it.

[Artur.Kosakowski]

7.in the formula computing the rigdity ( EJ )shown at the calculation note ; it seems that the module Ecd is not divided by (1+coeff effective creep). - Is RSA consider that the column isolated even if its a part of hyperstatic structure ? (Reminder : See Eurocode2 - Art5.8.7.2.(4)) [Priority 1]

Correct. The request for implementation of Art5.8.7.2.(4)) is added to the wish list.

Implemented in Robot 2015.

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