Roof/Wall Height

[JoyA]

Thank you Mick and JoAnn, yes I changed the dimensions but I need to go out and measure again to make sure this is all right. And I will look at pictures - I understood a knee wall to be an interior wall where there isn't an exterior wall - because the roof is outside the knee wall - I thought the roof rested on the first story exterior walls, but perhaps the exterior 2nd story walls are just very short? I will look up pictures. Thank you for all your help, and also about saving backup copies and etc. - I have discovered that this software does not "undo" very well so I have messed up designs (have used versions of CA software for years on our previous house), so that is a good idea as I'd hate to lose all my work on this one! Thank you again, I will post again once I make some progress.