Once the crossframes are all done and out of the workshop, work can begin on the wall frames which run the length of the building rising from the soleplate to the wallplate.
The primary posts which make up the outside posts of the crossframes are dragged back into the workshop for more action and reincorporated back into the wallframe at 90 degrees, creating the bays that will define the internal spaces in the building.
There’s no limit to the length of a wallframe as in theory (and if you’ve got enough space and money) you can just keep adding bays until you get bored!