Regardless of whether or not it is required by the building codes, this is an important consideration for many projects.
Even just adding the Kcr factor options from section 3.5.2 of the NDS (2012 version that i'm looking at) would go a long way in helping check long-term deflection.
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Even just adding the Kcr factor options from section 3.5.2 of the NDS (2012 version that i'm looking at) would go a long way in helping check long-term deflection.