•Professional专业人员 is a person engaged in one of the learned professions; A profession is a type of job that requires advanced education or training.
-Structural engineer结构工程师, civil engineer土木工程师, services engineer设备工程师, quantity surveyor造价工程师(工料测量师), landscape architects景观设计师
•Technician技术人员 is someone who is very good at the detailed technical aspects of an activity.
•Suveying technician测量员, building technicians建筑施工人员
• Craftsman工匠 is a man who makes things skillfully with his hands; skilled worker熟练工. 
•Client 业主: the first person in the processes; require constructing a project.
The client is a person, company or committe with a project they require construction. He will discuss the basic idea of what is wanted with a consultant, usually a civil engineer or architect.

