Can a hospital NICU patient care area exit across a roof deck with HVAC equipment to a new hospital interior stairwell that exits to a ground floor exit door to public way? This is built using the 2001 CBC (California Building Code),(ICBO Model Code). The existing building is a three story Type IFR nonsprinklered I-1.1 occupancy, built in 1950's. Previous exiting was to exterior stairs across roof 123'  from the roof exit door. Exterior stairs will be demolished for a remodel project with new exiting to the new sprinklered I1.1s' 4 story enclosed stairwell. New travel distance from patient room to stairwell is 207'on square composition pad sections on a flat gravel covered concrete roof.Fire rating of roof unknown.Exit width on roof is 36"-44" in the direction of exit travel one way only. No weather protection but there is minimum exit lighting and exit signs posted to new stairwell. NFPA 101 does not apply. Thanks for any feedback.