Proposition 6 in California poses as a grassroots movement to repeal recently hiked and already high gas taxes when it is something else, too: a vote against the future.
While widely accepted in Europe, designers and builders in the U.S. have struggled to take full advantage of mass timber because of current limitations in prescriptive codes.
U.S. Army Corp. of Engineers' researchers, leading a team that recently completed the 3D printing of 9.5-ft-tall reinforced concrete walls for a 32-ft x 16-ft deployable barracks, are setting their sights on a future project--3D printing of concrete roof beams--even before they have put the precast concrete lid on the printed walls.
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