Exploratorium at the Piers :"Jitterbugging", or Pouring Concrete
798 views · Published 24 November 2011 · 1:52 · Indexed 22 October 2026
Channel: Exploratorium · 2011 · Science & Technology
Pouring concrete is an ongoing feature of construction at the Piers. This footage, captured in July 2011, shows the well-choreographed process involved, from pumping the concrete into rebar-latticed slabs via remote-controlled overhead boom, to vibrating the concrete to get rid of air pockets, to flattening the surface using 2x4s ("screed") and rakes ("come-along tools"), to tamping in ("jitterbugging") bits of sand and gravel, to the final smoothing and leveling of the finished surface. This pour created an extension to the southeast apron of Pier 15, adjacent to what will become the East Gallery.
