Seismic combination

[stm1A]

Hi,

why SIS-SLE is SIS and SIS-SLU is SLU?

Why togheter SLU standard and SLU-SIS?

Why SLU-SIS in called SLU only in combination and not SLU-SIS?

it is difficult in combination to distinguish SLU standard from SLU-SIS.

[mustafahesenow]

Hi @stm1A

Could you please explain it more and If you have problem with type of combination you may change their type from code regulation .