In the old days before inexpensive electric lighting skylights were 
frequently used to bring daylight into the interior of large floor 
plates.  They were also used over (grand) stairs and also interior 
light shafts on to which windows opened in order to bring daylight into 
interior areas of buildings.  Many times these light wells were open in 
order to provide 'fresh air' to these interior spaces.  Daylight issues 
are also why there were so many courtyard type buildings with narrow 
wings with windows on both sides.

Fire escapes were typically needed where there were no enclosed 
interior stairs nearby.  They served, as the current building code 
lingo states, as a 'required means of egress'.  Therefore I think it is 
unlikely they were paired with adjacent enclosed interior stairs.  They 
were served by either doors or windows and they could switch back from 
floor to floor or with intermediate landings between floors where the 
stairs changed direction.

Ben Trousdale, AIA

--- In [email protected], raleigh <[EMAIL PROTECTED]> wrote:
> If you intend to add floors to the interior, (I assume it doesn't 
> come with them) the stairwells would be in line with the fire escapes 
> and enclosed. The roof entrance would be in line with the stair wells 
> (and fire escape doors. The skylight is typically placed over the 
> stairwell but not always. The windows wouldn't have curtains unless 
> it was an apartment house.
> 



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