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Part of my architecture course-

Planning out a house for one person. The house can only be 1.5m wide and must not extend over the extremeties of the 2 surrounding buildings by more than 1m.

Top floor is bedroom with garden, middle floor is living area and toilet, bottom is the cave... a 32 degrees C room that acts as an indoor pool. (We worked out the temperatures of each room based on ventilation rates etc.)

I'll post up the technical drawings some time.