The civil and industrial engineering trade
Civil engineering encompasses construction engineering, irrigation engineering, transport engineering, soils and foundation engineering, hydraulic engineering, and ocean engineering. It is the broadest of the engineering fields taking care of the environment, providing facilities for living, industry, and transport. Civil engineers are trained in all types of surveying, of the properties and mechanics of construction materials, the mechanics of structures and soils, and of hydraulics and fluid

Sanitary engineering
Sanitary engineering is closely linked to aspects of the civil engineer's job, involving the plumbing and waste disposal of community water etc. The sanitary engineer's role speaks for itself but his responsibilities are greater than to plumb and supply water followed by the treatment with chemicals.

Not only does he dispose of community wastes but reclamation of useful components of these wastes also plays a big part. Other criteria under the sanitary engineer's thumb is the control of pollution of surface waterways, groundwaters, and soils; housing sanitation; milk and food sanitation; rural and recreational-site sanitation; insect and vermin control; control of atmospheric pollution; industrial hygiene, including noise control. Toxic materials in work areas are also a concern as is any other fields concerned with the control of environmental factors affecting health.

Industrial or management engineering
Industrial engineers concentrate on improving manufacturing productivity and reducing costs, serving as a bridge between management and operations. They figure out the best use of facilities, equipment and people for the most cost efficient and productive way to make or process a product and are also concerned with worker safety and the work environment along the way.