At certain points during the design process, it may be desirable to "Freeze" the design of some or all of the columns. Doing so allows the user to archive completed designs or to perform what-if type investigations without having the software re-optimize and potentially modify the member sizes.

Designs may be frozen by selecting the Process – Freeze Design – All or Process – Freeze Design – Col Line commands. Freezing a design on a member is similar to setting a User Size in that the program will never re-optimize the design unless the User clears the design.

Members that have had their design Frozen or members that were previously assigned User Sizes in the View/Update can be cleared by selecting the Process – Clear Design – All or Process – Clear Design – Col Line commands. After designs are cleared, upon the next design the program will again perform an optimized design on all cleared members.