Mission Specialists Joe Tanner and Heidemarie Stefanyshyn-Piper wrapped up STS-115’s first spacewalk at 11:43 a.m. EDT. Their efforts centered on preparing the P3/P4 truss for operation. The new truss ...
Wood truss construction surged in popularity in the 1960s and ’70s, but back then most buildings that used metal-plate-connected wood trusses had flat ceilings. With today’s CAD and BIM technology, ...
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