Thanks for your reply!

another 3 qustions:
1) for case 1
1 WW+HP HYD
should I add displacement to this case like case 5 in branch?

2) should these displacements of main run we considered just are normal
operating case or should be corresponded to every case,
I list these cases for clear,
for main run displacement in intersection node
1 WW+HP HYD D11
2 W+T1+P1 OPE design temp D1
3 W+T2+P1 OPE ope temp D2
4 W+T3+P1 OPE mini temp D3
5 W+P1 SUS D4
6 W+T2+P1+WIN1 OPE D5
7 W+T2+P1+WIN2 OPE D6
8 W+T2+P1+U1 OPE D7
9 W+T2+P1-U1 OPE D8
10 W+T2+P1+U2 OPE D9
11 W+T2+P1-U2 OPE D10

Which cases for branch is right, a) or b)
a)
1 WW+HP+D11 HYD D11
2 W+T1+D1+P1 OPE design temp D1
3 W+T2+D2+P1 OPE ope temp D2
4 W+T3+D3+P1 OPE mini temp D3
5 W+P1+D4 SUS D4
6 W+T2+P1+D5+WIN1 OPE D5
7 W+T2+P1+D6+WIN2 OPE D6
8 W+T2+P1+D7+U1 OPE D7
9 W+T2+P1+D8-U1 OPE D8
10 W+T2+P1+D9+U2 OPE D9
11 W+T2+P1+D10-U2 OPE D10
b)
1 WW+HP HYD
2 W+T1+D1+P1 OPE design temp
3 W+T2+D2+P1 OPE ope temp
4 W+T3+D3+P1 OPE mini temp
5 W+P1+D4 SUS
6 W+T2+P1+WIN1 OPE
7 W+T2+P1+WIN2 OPE
8 W+T2+P1+U1 OPE
9 W+T2+P1-U1 OPE
10 W+T2+P1+U2 OPE
11 W+T2+P1-U2 OPE
3)As shr said, stess type of cases 6 to 11 defined as OCC rather than OPE is conventional practice, am I right?