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Nearly a decade ago, early in conceptual design for the 230,000-sq-ft infill addition to the American Museum of Natural History in Manhattan, talks with potential contractors made it apparent that conventional rigid formwork for the undulating and nonrepetitive interior bearing walls—designed in concrete to evoke an 80-ft-tall canyon—would be prohibitively expensive and wasteful.
“Concrete is fluid but formwork isn’t,” said Jeanne Gang, founding principal and a partner of design architect Studio Gang, after a briefing April 26 at the museum's $465-million Richard Gilder Center for Science, Education and Innovation, set to open May 4. “The barrier to curves is often the formwork,” added Gang.