We are working toward the last pour. All the whole blocks of Rastra have been placed. The final round at the top will be a concrete beam that runs around the entire house. Bridging over the window and door openings. The beam will have 4 pieces of 5/8" rebar in it. Looking at a cross- section of the beam -there would be 3" of Rastra, 6" of concrete, and another 3" of Rastra. To get this structure the cells are cut out of the Rastra block and a panel remain. The rastra panels are held in place by the wood forms that are banded to the wall. In order to keep the panels from falling in during the final pour all-thread is run across the panels. nuts with washers keep the proper spacing between the panels and will be left in the wall after the pour. in the pictures you will see anchor bolts for the windows in the form, this end the bolt will be embedded in the concrete after the final pour.
