Yeah, many of the fire codes are left over from the big SFO Central  Office 
fire in late seventies. It spread horizontally and vertically in the  
building via paper wrapped cables. 
 
First week of my new job in 1980  I was asked to place a 3278 closer  to 
the modem racks for problem determination. The cost to run the conduit thru  
the vapor barriers under the raised floor was $1100!
 
 
In a message dated 3/15/2016 3:30:39 P.M. Central Daylight Time,  
[email protected] writes:

so I  would not want to populate it with cubicles that could be located 
elsewhere.  OTOH we have acres of raised floor in older data centers built with 
multiple  bipolar mainframes in plan. Who  knew?


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