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The following changes have been made to the operation of the Design Setting Assume KL = 1, which is checked if the member is laterally supported according to the conditions in CSA O86 5.5.4.2.1 so that computation of lateral stability KL using 6.5.6.4 is not necessary.
Default Value
The program now sets the original “factory” default for Assume KL = 1 to be unchecked rather than checked. You can change this via Save as Default.
Note in Beam View
If Assume KL = 1 is checked, a note has been added to the Lateral support section in Beam View that says "Used when b/d > 9 (5.5.4.2.1)".
Design Results Output
When checked, and b/d is not greater than 9, the lateral support inputs are no longer displayed in the design results output