Alcance
ISO 20957-4:2016 specifies safety requirements for stationary strength training benches and free-standing barbell racks in addition to the general safety requirements of ISO 20957‑1. It is intended to be read in conjunction with ISO 20957‑1.ISO 20957-4:2016 is applicable to stationary training equipment type benches (type 4) (hereinafter referred to as benches) with the classes S, H and I according to ISO 20957‑1.