Here's a proposed layout for a 20 foot shipping container to be occupied by 2 adults.
A bed at the rear of the container that pivots up at the head and is stowed against the rear wall. It would measure 6' 3" long and five feet wide. The mattress would be 2 pillow tops back to back and a ticked cover sewed around them.
That would allow a 1 1/2 foot approx space on each side of the bed to get around it and also a place for a 2 cheap plastic 16" wide storage shelve units for end tables on each side.
In front of the bed on the left side facing the the closed end and ~18 inches in front of the bed would be a 24" by 32" RV shower base and enclosure with shower curtain and to the right of it a 30" by 42" toilet room with an RV toilet. The toilet would have a small holding tank and a valve and macerator pump to handle the waste. I wrote a detailed plan for it.
The title is:
Compact, comfortable, and efficient BO enclosed trailer toileting system -Update 3rd post
www.ar15.com/forums/topic.html?b=10&f=18&t=604728The toilet room has an accordian door [$24 at Home Depot] and once in the toilet room you step in the shower stall and pull the fabric curtain.
In front of the toilet and on the left wall extending to the door would be a 20" countertop at ~30" height for computers, counting your 1000's of rds of ammo or whatever.
On the opposite side would be the kitchen facility with a 20" counter, double SS RV sink, microwave above, maybe a frig, a Coleman propane single burner stove inlet into the counter. Shelves would be above and below it to the max.
Under the bed at rear of container is a 4' by 4' table on a modified HF hydraulic table with the casters and handle removed so the table can be raised to 29" and used when the bed is stowed or lowered to 22" when the bed is deployed, using the foot pedal.
Attachment for shelving all around the container taking advantage of the 8 1/2 foot ceiling height could be provided for substantial storage.
Other facilities would be installed in accordance with your needs and wants. TV, antennas, power controls, Fantastic Vent in toilet room, passive RV closeable vents over bed and kitchen facility.
Smoke and CO detectors, video monitor for outside cams and lights, IR detector controls, etc.
All this infrastructure requires attachment points and some 12VDC power wiring and I'm figuring it should be pre-installed to get it right before insulating is begun.
The attachment points for the add-ons could be 1 1/2" by 1/8 inch steel strap TIG welded at desired locations. After insulation is installed, the strap would be drilled and tapped for 10X24 or 12x24 screws to attach various shelves and fixtures.
A light studwall with a storm/sceen door can be placed across the opening, just inside the heavy doors.
A 5000 BTU AC that can be run with a Honda EU1000 can be installed thru the right wall blowing towards the bathroom entrance to get good dispersion of cool air.
Heat can be provided by a small 8ooo BTU Kerosene heater.
I've done some stuff like this in a trailer and it works well.