01-08-2013, 08:25 PM
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Thank you for your comments, I think like this conversation will be useful for all. I hope all other members take part and discuss.
1- I agree with you, insertion point in SAP give wrong result, it is not reliable, but if you are in safe side you can rely to default sap modeling.
2- Bracing does not designed by software, as you said, they designed in tension only, due to ignoring bracing in compression, tension force extracted from software multiply by 2 and design manually, you can define element in SAP tension only, but it need nonlinear analysis. I usually use mentioned method (Design it manually).
3- Yes, it checked, but does not presented on calculation notes, in addition due to my expedience for light weight crane (in this case 5 ton) lateral-torsional buckling is not important.
Thank you for your comments, I think like this conversation will be useful for all. I hope all other members take part and discuss.
1- I agree with you, insertion point in SAP give wrong result, it is not reliable, but if you are in safe side you can rely to default sap modeling.
2- Bracing does not designed by software, as you said, they designed in tension only, due to ignoring bracing in compression, tension force extracted from software multiply by 2 and design manually, you can define element in SAP tension only, but it need nonlinear analysis. I usually use mentioned method (Design it manually).
3- Yes, it checked, but does not presented on calculation notes, in addition due to my expedience for light weight crane (in this case 5 ton) lateral-torsional buckling is not important.