03-05-2011, 12:36 AM

Hi

My question have to concern with normalized axial force by EC into columns

Under thew desired ductility conditions EC require this conditions

ni=Ned/(Ac*fcd) <= 0.55 for DCH ... 1

ni=Ned/(Ac*fcd) <= 0.65 for DCM ... 2

ni=Ned/(Ac*fcd) <= 0.75 for DCL .... 3

Where Ned is axial force ( kN for ex.) given from seismical situations.

My question is

Which value of Axial force must be included in equations 1,2, and 3

N = Ng+0.3NP+Ns or N = 1.35Ng+1.5Np

Or equations 1,2,3 must be checked with both values of axial forces

Any reference or any example would be helpfull,

Regards

z.g.

My question have to concern with normalized axial force by EC into columns

Under thew desired ductility conditions EC require this conditions

ni=Ned/(Ac*fcd) <= 0.55 for DCH ... 1

ni=Ned/(Ac*fcd) <= 0.65 for DCM ... 2

ni=Ned/(Ac*fcd) <= 0.75 for DCL .... 3

Where Ned is axial force ( kN for ex.) given from seismical situations.

My question is

Which value of Axial force must be included in equations 1,2, and 3

N = Ng+0.3NP+Ns or N = 1.35Ng+1.5Np

Or equations 1,2,3 must be checked with both values of axial forces

Any reference or any example would be helpfull,

Regards

z.g.

United States of Albania