When did the steel worker, formwork worker, concrete worker, bricklayer, scaffolder, Plaster workers and carpenter appear respectively?

Reinforcement worker: The advanced yard can leave from the foundation until the main structure is completely completed. However, reinforcement may be used in the decoration stage of the project, but the reinforcement worker in the decoration stage is no longer the focus. Formwork: When pile foundation is involved, it can not enter the site until the foundation earthwork is excavated. General primary and secondary structures will exit. Concrete worker: When the project involves the use of concrete, the indoor floor and ground will leave in the decoration stage. Bricklayer: If we contract and decorate together, we won't leave from the beginning to the end of the project. Scaffolder: If the basement or formwork needs scaffolder's erection, the foundation will enter the site; otherwise, it will enter the site after the first floor, and the external wall decoration stage will be finished. Plaster workers = Name of bricklayer's decoration stage: Come obviously when plastering is needed, and leave obviously after plastering. Woodworking = formwork