Dear Javgarloz,

Why did you use W+T1+P1?
L6 W+T1+P1+U1 OPE Operating + U1
L7 W+T1+P1-U1 OPE Operating + (-U1)
L8 W+T1+P1+U2 OPE Operating + U2
L9 W+T1+P1-U2 OPE Operating + (-U2)
L10 W+T1+P1+U3 OPE Operating + U3
L11 W+T1+P1-U3 OPE Operating + (-U3)

Instead of W+T2+P2? I gues the worst comes from condition 2 = design
L6 W+T2+P2+U1 OPE Operating + U1
L7 W+T2+P2-U1 OPE Operating + (-U1)
L8 W+T2+P2+U2 OPE Operating + U2
L9 W+T2+P2-U2 OPE Operating + (-U2)
L10 W+T2+P2+U3 OPE Operating + U3
L11 W+T2+P2-U3 OPE Operating + (-U3)

but if not sure we can do such a load case L44 = L1+L2+L3 (OPE)using max combination methode.

For restrain check.
L1 ~ L11
L45 = L44 + Max Wind
L46 = L44 + earthquake.

For stress check, I think you miss SUS+ SRSS [U1+U2+U3] (OCC)