Hi,
What are mandatory loadcase required for line where there is structural sway due to seismic load?
I am analyzing line from overhead column to independent structure (50 meter) tall from ground.. which has around 70 mm seismic displacement on the top..

What should be load case combination?

Sustaine+ U1+D1 is required to check<1.33sh?
As displacement is secondary load it can not be check with occasional load from my point of view..

I have considered following loadcase for checking seismic sway..
L1)W+P (SUS)
L2) W+P+T (OPE)
L3)W+P+T+U1 (OPE)
L4) W+P+T+U1+D1(OPE)
L5) L4-L3(EXP)---- PURE SWAY

Is it sufficient to check stress due to seismic structure sway just as displacement only?

Should i consider more load case than these cases?

Structure sway data is provided by structural engineer from STADD programme at respective elevation on structure..

Pls guide me.. also suggest code B31.3 reference for this..

Thanks for technical guidance all experts..