screen wall next the corridor was of terra 240 THE INSULATION OF SOUND cotta block, finislied on the corridor side with plaster applied directlyto the terra cotta. The wall next the room was of gypsum block,plastered and finished in burlap. In the air space between the twowalls, deadening sheet was… … EiG. 1. Details of Construction, Institute of Musical Art,New York, N. Y. of these cells being entirely enclosed in gypsum block, the othersbeing closets opening the one to one room, the other to the other.The closets were lined with wood sheathing which was separatedfrom the enclosing wall by a…
Architectural acoustics
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