Problem:

Impossible to enter Ra, Rm, Tb, Tc, Td values in the earthquake window.

Answer:

In older version v43.01.01.011, we were able to enter soil class as well as other parameters like Ra, Tb, Tc, Td.

But in version v44.00.00.111 we can either select the soil class or other parameters.

Once we choose soil class, other parameters will get blocked to edit and will be taken as per selected soil class.

In case you want to enter the Ra, Rm, Tb, Tc, & Td, keep the soil class cell blank then you can edit those parameters.

It depends on which method you want to proceed, you can select the soil class or keep the soil class blank and enter the other parameters.