Also well worth mentioning was the plenum system used to heat the building.
2.
It was the first building in Chicago to use a raised-floor pressurized plenum system.
3.
What little information survived showed that it would have utilized a dual plenum system similar to the first generation Dodge Viper as well as variable valve timing.
4.
When used in the closed end plenum system of a surge relief valve, it must also perform an on / off function to correct for thermal expansion and contraction.
5.
In addition to the ventilation shafts in the tower that worked on a stack effect, heating shafts were provided within the mass concrete walls connecting to a plenum system running below the floor to a chamber below the chancel where high indirect radiators were located.
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