In one of the projects, I saw the following load case has been used for ocassional case.

W+P+U1
W+P+Win1
for seismic and wind loading respectively.

Generally we use the following combination

L1 W+P+T1
L2 W+P
L3 W+P+T1+U1
L4 L3-L1
L5 L4+L2 (scalar)for occasional loads

Which combination is correct?

Thanks

MW