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Civil Engineering in building construction involves the design of Surface Water Management Systems, Bridges, Highways, Drainage Systems, etc.
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Civil Design:
Surface Water Management System: Surface Water Management Systems are required in all developments to prevent flooding and discharge of contaminated water runoff from roads, agricultural and construction developments into waterways, oceans, lakes and underground water tables.

Examples of Surface Water Management Systems can be seen along highways, where the swales convey water away from the roads into treatment ponds. It can also be seen in residential subdivisions and shopping centers where holes are carved out of the ground (these are retention ponds).

The basic concept of water treatment is to match the post development conditions with the pre-development conditions.

For example, before the development of a parcel of land, there is a certain quantity of water that naturally flowed across the land, this quantity must be calculated. The pre-condition flow of water across the land and the discharge of water on to the adjacent land is calculated based upon the soils, the land configuration and the surface materials. Any flow of water on to the adjacent land, after developing the land in question, must not exceed the amount that naturally flowed on to the adjacent land before any development took place on the land in question. This is what is known as a pre-post match. To acheive this, the amount of impervious (building and paving) is computed and any changes to the land configuration is studied. With this information, retention ponds are created to hold the quantity of water that would be displaced by the buildings and pavement. In addition to quantity, there is also the quality of water to be taken into account. The quality study addresses oils, metals and other contaminating particles, usually discharged from vehicles and from pesticides. Examples of quality are retention ponds with baffles. The baffles are usually a metal barrier that allow water to flow thru the under side of the baffle, thus preventing the oils and other particles floating at the top from passing thru to the adjoining land. Although the actual calculations are extensive and cannot be covered here, the explaination provided will give you an idea of how the basic concept works.
Highways, Dams and Bridges: Among the projects that a Civil Engineer will work on are highways and bridges. The structural considerations are similar as to those discussed under the Structural Web Page. The main difference is that the loads are generally larger and they are dynamic (the movement of large vehicles).