More than 25,000 Twitter users participated in a Nov. 18 Twitter chat, hosted by the American Concrete Institute, to ask questions about the group's revised "Formwork for Concrete" manual, which was published last month.
Topics "discussed" included polyvinyl chloride formwork; safety design of formwork; new content in the manual; the latest load and materials standards; and the benefits students can gain from the manual, says ACI. "The objectives of the manual, through many editions, are to support quality, safety and economy," says David W. Johnston, pro bono author of the concrete manual's eighth edition.