The drawing indicates demolition limits for existing utility piping near structural Column B-10, with leaders specifying removal up to existing joints. Existing services include a one-and-a-half-inch hot water line, a one-and-a-half-inch two-way line, a one-inch service air line, and a one-inch steam line.
REMOVE UP TO EXISTING JOINTS i h \ \ e /■: , ; 'il • V ■J. ’ I J '(r) COLUMN B-10 ----- EXISTING 1 1/2 HOT WATER EXISTING 7 SERVICE AIR EXISTING 1 1/2" 2W EXISTING 7" STEAM
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