well the wall thing.... I guess the thought was to try & get more box strength by going in from the side instead of fastening the bottom plate straight down like one might do normaly. It put the screws (plenty of them) in shear rather than tension plus it gave me a full true inside dimension of 8' x 16'.

I dunno if it has a name, Yellow Mallow?

(we call it the marshmallow sometimes)




Something clever here.