Wood and sheetrock

Curvilinear Section: Inside curve approximately 10’ long x 8’ high– 4’ step-up to 12’ (8” riser to 12” tread); Outside curve 20’ long x 10’ high sloping to 12’, 1’ step-up to 13’

Rectangular Section: 6’ wide x 12’ long, 12’ and 13’ high

Door in the Air: Approximately 15’ high x 4’ wide

Originally installed at 112 Greene Street, New York, NY March 19-31, 1977

Photo: Alice Aycock