Ho Toluca,
You are on the right track with your thoughts but you should also take into account that there is historical precedent for the use of internal jetties in timber framed buildings where the upper floor appears to overhang lower floor thereby creating an extra long room on the lower floor exceeding bay length. This approach was employed in open hall design when the space above the hall was used primarily to provide relief from smoke generated by the hall fire. The area under the overhang was either used to form a cross passage with fabric or timber screens to the hall or as an area to sit on a perch behind the hall table where a persons back could lean against a crosswall divider that did not lie along the line of the cross frame (bent).
Regards
Ken Hume
