Enter the damping ratio for the structure if you like to use ASCE 7-95 part 6.6 category III (if Fn less than 1.0 Hz or TANTAN/OD > 4.0).
Enter the damping ratio for the structure if you like to use ASCE 7-95 part 6.6 category III (if Fn less than 1.0 Hz or TANTAN/OD > 4.0).