Tilt-Up Height/Width Ratios? (Not Thickness)

[ThStructuresGuy]

We have a client that want's to do a 42' tall panel x 2'-0" wide, the panel will be supported on each side - however a question was asked about lifting the panel. In my research I haven't been able to find any code limits on the width/height ratio of a panel. Does anyone have experience with using such a sort panel?

 

[haynewp]

We didn't have any rules of thumb about panel height/width ratios when lifting when I designed panels to be lifted. But that is a skinny panel. When you say supported does that mean steel strongbacks during lifting? What is the thickness?