the combination of occasional load cases and sustained case to be considered as occasion load or sustained load. my friend is saying that it should be sustained case for more conservative. so even both are correct, which one normally to be referred?...

WW+HP HYD
W+T1+P1 OPE
W+T2+P1 OPE
W+T3+P1 OPE
W+P1 SUS
W+T2+P1+U1+WIN1 OPE
W+T2+P1+U2+WIN1 OPE
W+T2+P1+U3+WIN1 OPE
W+T2+P1+U1+WIN2 OPE
W+T2+P1+U2+WIN2 OPE
W+T2+P1+U3+WIN2 OPE
L6-L3 OCC
L7-L3 OCC
L8-L3 OCC
L9-L3 OCC
L10-L3 OCC
L11-L3 OCC
L18+L5 SUS or OCC
L19+L5 SUS or OCC
L20+L5 SUS or OCC
L21+L5 SUS or OCC
L22+L5 SUS or OCC
L23+L5 SUS or OCC