Editing TransHab (section)

===TransHab layout===
[[Image:TransHab level 3.jpg|thumb|Level 4 and 3]]
[[Image:TransHab crew quaters level 2.jpg|thumb|Level 2]]
[[Image:TransHab level 1.jpg|thumb|Level 1]]

TransHab was intended to be composed of four levels/floors.<ref name=nasa20030627b>{{cite web|url=http://spaceflight.nasa.gov/history/station/transhab/transhab_levels.html|archive-url=https://web.archive.org/web/20030819001416/http://spaceflight.nasa.gov/history/station/transhab/transhab_levels.html|url-status=dead|archive-date=2003-08-19|title=HSF &ndash; Transhab|publisher=NASA|access-date=2010-02-09}}</ref>

; Level 4
:The Pressurized Tunnel Area was intended to provide a passageway between TransHab and any vehicle to which it is attached. The original tunnel design had two standard International Space Station hatches and housed critical equipment required during module expansion, such as avionics and power equipment.<ref name=nasa20030627b/>

; Level 3
:Level Three was to house an exercise area with a treadmill and stationary bicycle. The design also contained a complete health care system with all types of medical and emergency equipment and a type of "space bath" area provided for body cleansing. In addition, this level contained a soft stowage area identical to level one.

:Crew Health Care Area &ndash; The design for the crew health care area incorporated two ISS Crew Health Care System racks, a Full Body Cleansing Compartment, changing area, exercise equipment (treadmill and ergometer), a partitionable area for private medical exams and conferencing, as well as an Earth-viewing window. The Earth-viewing window was to have been {{convert|51|cm|in|abbr=off}} in diameter and was located near the exercise area. The window design had four panes totaling {{convert|10.2|cm|in|abbr=off}} thick and a hard frame around each window that attaches to all layers of the shell.

:Stowage &ndash; Soft-sided cabinets was to have provided stowage for spare parts, supplies, clothing and other equipment. If built, TransHab would have doubled the stowage room available{{When|date=February 2011}} on the International Space Station.<ref name=nasa20030627b/>

; Level 2
:Crew Quarters &ndash; The crew quarters area design had six individual crew quarters, sized at {{convert|2.3|m3|ft3|sp=us}} of volume per crew quarter, and a central passageway located within the second level central core structure and water tanks. Each compartment contains a sleeping bag/sleep restraint, an area for stowing personal items, and a computer entertainment center for recreation and personal work.

:Mechanical &ndash; The mechanical room is external to the core structure and uses only half the floor space. It is acoustically and visually isolated. The other half of this area is a [[clerestory]] above the wardroom area. The mechanical room consists of an environmental control and life support system, power equipment and avionics equipment and provides return airflow from Level One and Level Three through openings.<ref name=nasa20030627b/>

; Level 1
:The first level was to house a kitchen with a refrigerator-freezer, microwave oven, water dispenser, and food preparation equipment as well as a table that seats 12, enough to allow an entire Station resident crew and replacement crew to sit together for meetings or meals. There were to be three galley racks, a large wardroom table, a soft stowage array and an Earth-viewing window identical to the window on Level 3.<ref name=nasa20030627b/>