I got a mission to calculate a pipe line (B31.3) under seismic load (U1, U2) and wind load (Win1, Win2) so I defined the load cases below by using the CAESAR II user guide

L1=W+T1+P1
L2= W+T1+P1+U1
L3= W+T1+P1-U1
L4= W+T1+P1+U2
L5= W+T1+P1-U2
L6= W+T1+P1+Win1
L7= W+T1+P1-Win1
L8= W+T1+P1+Win2
L9= W+T1+P1-Win2
L10= W+ P1
L11=L1-L10
L12=L2-L1
L13=L3-L1
L14=L4-L1
L15=L5-L1
L16=L6-L1
L17=L7-L1
L18=L8-L1
L19=L9-L1
L20=L12+L14
L21=L12+L15
L22=L13+L14
L23=L13+L15
L24=L16+L18
L25=L16+L19
L26=L17+L18
L27=L17+L19
L28=L10+L20
L29=L10+L21
L30=L10+L22
L31=L10+L23
L32=L10+L24
L33=L10+L25
L34=L10+L26
L35=L10+L27

From L12 to L19: Algebraic Method
From L20 to L27: SRSS Method
From L28 to L35: ABS Method

Is this combination are wright?
the results were acceptable and logic but I have some doubt about the load cases combinations