This drawing provides details for the Hackney North Atrium Riser Steel project. It is to be read in conjunction with the NSSS 5th Edition and the structural engineer's specifications. All steelwork will be fabricated and erected according to tolerances in the NSSS, and will consist of S355 grade rolled sections, hollow sections, and S275 grade plates, with minimum 2 grade 8.8 bolts used for all connections. Dimensions are in millimeters and levels are in meters. Common steelwork abbreviations are defined.