The K-factors for beams and braces can be specified by the user using the Criteria > K-Factor command, or on a member-by-member basis using the Assign menu. The K-factors for columns can be either specified by the user or calculated by the program. For braced frames the calculated value is always 1.0. For unbraced frames the calculated value is based on an Nomograph equations in Annex D. If you are not satisfied with the values calculated by these equations, you should assign the effective length value directly to the members.