Selecting the Criteria - Effective Length command will cause the Effective Length (l/L) dialog box to appear. l/L values for major and minor axis can be set for the beams and braces by entering values in the edit boxes.

For columns, l/L can be indicated in one of two ways: entering specific values for l/L major and l/L minor, or allowing the program to choose these values for you. To enter l/L major and minor values for columns, click the Use button and then enter values in the edit boxes. To have RAM Frame choose the l/L Factors based on the Eurocode Annex E equations, click the Use Annex E Values button.