I see that the angled braces between the main posts and the lateral beams on the middle panel of the main structure (aligned with the 2nd of the 3 tracks) are further apart than the angled braces on the panels on either side. That sort of suggests that there might be plans for a set of large equipment doors in the middle panel.
Is that the plan? And if so, are tracks going to extend through those doors, or if not, what are the large doors for?