- r-steel, rpp& rpp-e anchor bolts are fastening elements used to connect precast building components such as beams, columns and walls to adjoining elements or foundations. Rpp bolts for moderate loads and rpp-e bolts are used for high loads. - r-steel, rpk-n2/ rpk-e2 column shoes are fastening components used with anchor bolts to create moment resisting connections for precast columns to foundations or linking columns together, - r-steel, rsk-n, rsk-e wall shoes fastening components create tension resisting connections across joints between two precast wall elements or between precast wall element and a site cast structure. - the advantages of this connection system are rapid assembly of the columns eliminating the need for temporary bracing during installation. - additional ral washer plates are supplied with the associated wall shoes to form the connection to the matching base bolts. - these r-steel, components are used in combination to prevent any fit issues from different suppliers