Seismic Info

[afellows]

When I enter values for seismic design such as: S1, Ss, R, and I, Robot calculates values for Fv, Fa, Sd, Sds that are slightly lower than the values I calculated by hand even though we are both using the same building code calculation methods from ASCE.  Why is this so?

Thank you,

[Artur.Kosakowski]

I think we should be proud that we are expected to provide the answer on the detailed question about the reason for the difference in values not knowing not only these values but the parameters for which they were calculated but I'm afraid this is not going to be possible

To investigate this issue we need both your hand calcs and the corresponding Robot file with the model.

[afellows]

Attached are the differences in calculations...

[afellows]

I am not sure how to send the robot file, so hopefully this shows the parameters you are looking for.

[Artur.Kosakowski]

Just attach it in the same way as you did with the pdf file. If the size is what you are concerned about then select rtd without results as the type of the file in the Save as dialog and give it a new name. Then compress it.