Steel Structures playing a significant role in Construction industry and it’s a widely used in malls, stories, parking, multi-storey building, warehouses, railways and bridges, etc. Due to this important of the steel structure and the multiple usages it’s become needed to study steel structure erection methods and the productivity of implementation teams and the factors that effecting on the productivity. This research concerns a case study on one of a very widely used steel structure building rigid frames and investigate the productivity of steel structure implementation teams work (erection teams) through studying and analyzing the factors that effect on productivity. The ranking of factors will be useful in steel construction sector to save time and money and will help in the estimation of the durations of tasks, all the data used in this research from questionnaire, interviews, work study are collected from previous projects.