Monday, June 29, 2009

12) CONTENTS OF CIVIL ENGINEERING

1-Aquatic and environmental engineering
2-Architectural engineering
3-Climate engineering
4-Civionic engineering (civionics)
5-Construction engineering
6-Earthquake engineering
7-Earth systems engineering and management
8-Ecological engineering
9-Environmental engineering
10-Facilities engineering
11-Geomatics engineering
12-Geotechnical engineering
13-Highway engineering
14-Hydraulic engineering
15-Landscape engineering (landscape architecture)
16-Land development engineering
17-Pavement engineering
18-Railway systems engineering
19-River engineering
20-Sanitary engineering
21-Sewage engineering
22-Structural engineering
23-Surveying
24-Traffic engineering
25-Transportation engineering (transport engineering)
26-Urban engineering


1- AQUATIC & ENVIRONMENTAL ENGINEERING
Aquatic and environmental engineering; an engineering topic, used sometimes as a synonym for Civil engineering by some universities in Sweden, since the word 'civil engineer' often refers to an engineering degree.


2- ARCHITECTURAL ENGINEERING
Architectural engineering, also known as Building Engineering, is the application of engineering principles and technology to building design and construction. Definitions of an architectural engineer may refer to:

An engineer in the structural, mechanical, electrical, construction or other engineering fields of building design and construction.


A licensed engineering professional in parts of the United States, where architectural engineering may include complete building design.


In informal contexts, and formally in some places, a professional synonymous with or similar to an architect. In some languages, "architect" is literally translated as "architectural engineer".



3- CLIMATE ENGINEERING
The modern concept of geoengineering is usually taken to mean proposals to deliberately manipulate the Earth's climate to counteract the effects of global warming from greenhouse gas emissions. Advocates of the idea promote it based on the possibility that climate change may become so far advanced that severe and dangerous effects are inevitable, or that positive feedback mechanisms may cause runaway climate change, even if emissions are substantially reduced. There is also a body of opinion that supports geoengineering because it may avoid or delay the difficult and expensive transition to a low carbon economy. However, most scientists, environmentalists and engineers who advocate geoengineering see it as an additional measure required to stabilise the climate, not as an cheaper alternative to a low carbon economy.

Some geoengineering techniques are based on carbon sequestration. These seek to reduce greenhouse gases in the atmosphere directly. These include direct methods (e.g. carbon dioxide air capture) and indirect methods (e.g. ocean iron fertilization). These techniques can be regarded as mitigation of global warming. Alternatively, solar radiation management techniques (e.g. stratospheric sulfur aerosols) do not reduce greenhouse gas concentrations, and can only address the warming effects of carbon dioxide and other gases; they cannot address problems such as ocean acidification, which are expected as a result for rising carbon dioxide levels. Examples of proposed geoengineering techniques include the production of stratospheric sulfur aerosols, which was suggested by Paul Crutzen, and cloud reflectivity enhancement. Most techniques have at least some side effects.

To date, no large-scale geoengineering projects have been undertaken, nor has a consensus been reached that geoengineering is desirable. Some commentators additionally suggest that consideration of geoengineering is unhelpful because it threatens to reduce the political and popular pressure for emissions reduction. Typically, the scientists and engineers proposing geoengineering strategies do not suggest that they are an alternative to emissions control, but rather an accompanying strategy. Some limited tree planting and cool roof projects are already underway, and ocean iron fertilization is at an advanced stage of research, with small scale research trials having been completed.


4- CIVIONIC ENGINEERING
Civionics is the combination of electronic engineering with civil engineering, in a manner similar to avionics (aviation and electronics) and mechatronics (mechanical engineering and electronics). An emerging discipline, the main application area of civionics is currently the use of electronics for structural health monitoring (SHM) of civil structures, particularly photonics (Fiber Optic Bragg Grating).

In SHM, Civionics will provide engineers with feedback necessary to aid in optimizing design techniques and understanding infrastructure performance, behaviour and state of condition. The successful integration of intelligent sensing of innovative structures will allow civil structural engineers to expand the design envelope by taking risks to introduce new design concepts, materials and innovation in civil engineering.


5- CONSTRUCTION ENGINEERING
Construction engineering concerns the planning and management of the construction of structures such as highways, bridges, airports, railroads, buildings, dams, and reservoirs. Construction of such projects requires knowledge of engineering and management principles and business procedures, economics, and human behavior. Construction engineers engage in the design of temporary structures, quality assurance and quality control, building and site layout surveys, on site material testing, concrete mix design, cost estimating, planning and scheduling, safety engineering, materials procurement, and cost engineering and budgeting.

Construction management is similar to construction engineering from the standpoint of the level of mathematics, science and engineering used to analyze problems and design a construction process.


6- EARTHQUAKE ENGINEERING
Earthquake engineering is the study of the behavior of buildings and structures subject to seismic loading. It is a subset of both structural and civil engineering. Eminent authority on seismic risk mitigation, Caltech professor George W. Housner is widely considered as the 'father' of the modern field of earthquake engineering. Stanford University professor John Blume’s contributions to the dynamics of structures have earned him the title of the 'father' of earthquake engineering too.

The main objectives of earthquake engineering are:

Understand the interaction between buildings or civil infrastructure and the ground.

Foresee the potential consequences of strong earthquakes on urban areas and civil infrastructure.

Design, construct and maintain structures to perform at earthquake exposure up to the expectations and in compliance with building codes.


7- EARTH SYSTEM ENGINEERING & MANAGEMENT
Earth systems engineering and management (ESEM) is a discipline used to analyze, design, engineer and manage complex environmental systems. It entails a wide range of subject areas including anthroplogy, engineering, environmental science, ethics and philosophy. At its core, ESEM looks to "rationally design and manage coupled human-natural systems in a highly integrated and ethical fashion" ESEM is a newly emerging area of study that has taken root at the University of Virginia, Cornell and other universities throughout the United States. Founders of Earth Systems Engineering & Management are Braden Allenby and Michael Gorman.


8- ECOLOGICAL ENGINEERING
Ecological engineering is an emerging of study integrating ecology and engineering, concerned with the design, monitoring and construction of ecosystems. The design of sustainable ecosystems intends to integrate human society with its natural environment for the benefit of both.


9- ENVIRONMENTAL ENGINERING
Environmental engineering is the application of science and engineering principles to improve the environment (air, water, and/or land resources), to provide healthy water, air, and land for human habitation and for other organisms, and to remediate polluted sites.

Environmental engineering involves water and air pollution control, recycling, waste disposal, and public health issues as well as a knowledge of environmental engineering law. It also includes studies on the environmental impact of proposed construction projects.

Environmental engineers conduct hazardous-waste management studies to evaluate the significance of such hazards, advise on treatment and containment, and develop regulations to prevent mishaps. Environmental engineers also design municipal water supply and industrial wastewater treatment systems as well as being concerned with local and worldwide environmental issues such as the effects of acid rain, ozone depletion, water pollution and air pollution from automobile exhausts and industrial sources.

At many universities, Environmental Engineering programs follow either the Department of Civil Engineering or The Department of Chemical Engineering at Engineering faculties. Environmental "civil" engineers focus on hydrology, water resources management and water treatment plant design. Environmental "chemical" engineers, on the other hand, focus on environmental chemistry, advanced air and water treatment technologies and separation processes.

Additionally, engineers are more frequently obtaining specialized training in law (J.D.) and are utilizing their technical expertise in the practices of Environmental engineering law.



10- FACILITIS ENGINEERING
The term "facilities engineering" evolved from "plant engineering" in the early 1990s as U.S. workplaces became more complex. Practitioners preferred this term because it more accurately reflected the multidisciplinary demands for specialized conditions in a wider variety of indoor environments, not merely manufacturing plants.

Today, a facilities engineer (vs. a facilities manager) typically has hands-on responsibility for the employer's electrical engineering, maintenance, environmental, health, safety, energy, controls/instrumentation, civil engineering, and HVAC needs. The need for expertise in these categories varies widely depending on whether the facility is, for example, a single-use site or a multi-use campus; whether it is an office, school, hospital, museum, processing/production plant, etc.

Some colleges and universities offer degrees in facilities engineering. Others offer continuing education courses. The Association for Facilities Engineering offers rigorous programs to certify engineers, maintenance managers and supervisors.




11- GEOMATICS ENGINEERING
Geomatics engineering is a rapidly developing discipline that focuses on spatial information (i.e. information that has a location). The location is the primary factor used to integrate a very wide range of data for viewing and analysis. Geomatics engineers apply engineering principles to spatial information and implement relational data structures involving measurement sciences, thus using geomatics and acting as spatial information engineers. Geomatics engineers manage local, regional, national and global spatial data infrastructures.

Geomatics is a new term incorporating the older field of surveying along with many other aspects of spatial data management. Following the advanced developments in digital data processing, the nature of the tasks required of the professional land surveyor has evolved and the term surveying alone does not any more describe the whole range of tasks that the profession deals with. As our societies become more complex, information with a spatial position associated with it becomes more critical to decision-making, both from a personal and a business perspective, and also from a community and a large-scale governmental viewpoint.


12- GEOTECHNICAL ENGINEERING
Geotechnical engineering is the branch of civil engineering concerned with the engineering behavior of earth materials. Geotechnical engineering includes investigating existing subsurface conditions and materials; determining their physical/mechanical and chemical properties that are relevant to the project considered, assessing risks posed by site conditions; designing earthworks and structure foundations; and monitoring site conditions, earthwork and foundation construction.

A typical geotechnical engineering project begins with a review of project needs to define the required material properties. Then follows a site investigation of soil, rock, fault distribution and bedrock properties on and below an area of interest to determine their engineering properties including how they will interact with, on or in a proposed construction. Site investigations are needed to gain an understanding of the area in or on which the engineering will take place. Investigations can include the assessment of the risk to humans, property and the environment from natural hazards such as earthquakes, landslides, sinkholes, soil liquefaction, debris flows and rock falls.

A geotechnical engineer then determines and designs the type of foundations, earthworks, and/or pavement subgrades required for the intended man-made structures to be built. Foundations are designed and constructed for structures of various sizes such as high-rise buildings, bridges, medium to large commercial building, and smaller structures where the soil conditions do not allow code-based design.

Foundations built for above-ground structures include shallow and deep foundations. Retaining structures include earth-filled dams and retaining walls. Earthworks include embankments, tunnels, dikes, levees, channels, reservoirs, deposition of hazardous waste and sanitary landfills.

Geotechnical engineering is also related to coastal and ocean engineering. Coastal engineering can involve the design and construction of wharves, marinas, and jetties. Ocean engineering can involve foundation and anchor systems for offshore structures such as oil platforms.

The fields of geotechnical engineering and engineering geology are closely related, and have large areas of overlap. However, the field of geotechnical engineering is a specialty of engineering, where the field of engineering geology is a specialty of geology.


13- HIGHWAY ENGINEERING
Highway engineering is the process of design and construction of efficient and safe highways and roads. It became prominent in the 20th century and has its roots in the discipline of civil engineering. Standards of highway engineering are continuously being improved. Concepts such as grade, surface texture, sight distance and radii of horizontal bends and vertical slopes in relation to design speed and in addition to road junction design (intersections and interchanges) are all important elements of highway engineering. Most developed nations have extensive highway networks.

Design policies standards used in the United States are typically based on publications of the American Association of State Highway and Transportation Officials as well as research promulgated by the Transportation Research Board, the Institute of Transportation Engineers, the Federal Highway Administration, and the Department of Transportation.



14- HYDRAULIC ENGINEERING
Hydraulic engineering is a sub-discipline of civil engineering concerned with the flow and conveyance of fluids, principally water. This area of engineering is intimately related to the design of bridges, dams, channels, canals, levees, elevators, and to both sanitary and environmental engineering.


15- LANDSCAPE ENGINEERING
"Landscaping" is the application of mathematics and science to create useful land- and waterscapes. It can also be described as green engineering, but the design professionals best known for landscape engineering are landscape architects. Landscape engineering is the interdisciplinary application of engineering and other applied sciences to the design and creation of anthropogenic landscapes. It differs from, but embraces traditional reclamation. It includes scientific disciplines: Agronomy, Botany, Ecology, Forestry, Geology, Geochemistry, Hydrogeology, and Wildlife Biology. It also draws upon applied sciences: Agricultural & Horticultural Sciences,Engineering Geomorphology, landscape architecture, and Mining, Geotechnical, and Civil , Agricultural & Irrigation Engineering.

Landscape engineering builds on the engineering strengths of declaring goals, determining initial conditions, iteratively designing, predicting performance based on knowledge of the design, monitoring performance, and adjusting designs to meet the declared goals. It builds on the strengths and history of reclamation practice. Its distinguishing feature is the marriage of landforms, substrates, and vegetation throughout all phases of design and construction, which previously have been kept as separate disciplines.

Though landscape engineering embodies all elements of traditional engineering (planning, investigation, design, construction, operation, assessment, research, management, and training), it is focused on three main areas. The first is closure planning – which includes goal setting and design of the landscape as a whole. The second division is landscape design more focused on the design of individual landforms to reliably meet the goals as set out in the closure planning process. Landscape performance assessment is critical to both of these, and is also important for estimating liability and levels of financial assurance. The iterative process of planning, design, and performance assessment by a multidisciplinary team is the basis of landscape engineering.



16- PAVEMENT ENGINEERING
Pavement engineering is a branch of civil engineering that uses engineering techniques to design and maintain flexible (asphalt) and rigid (concrete) pavements. This includes streets and highways and involves knowledge of soils, hydraulics, and material properties. Pavement engineering involves new construction as well as rehabilitation and maintenance of existing pavements. Maintenance often involves using engineering judgment to make maintenance repairs with the highest long-term benefit and lowest cost. The Pavement Condition Index (PCI) is an example of an engineering approach applied to existing pavements. Another example is the use of a falling weight deflectometer (FWD) to non-destructively test existing pavements. Calculation of pavement layer strengths can be performed from the resulting deflection data.


17- RAILWAY SYSTEMS ENGINEERING
Railway systems engineering is a multi-faceted engineering discipline dealing with the design, construction and operation of all types of railway systems. It encompasses a wide range of engineering disciplines, including Civil engineering, Computer engineering, Electrical engineering, Mechanical engineering, Industrial engineering and Production engineering. A great many other engineering sub-disciplines are also called upon.


18- RIVER ENGINEERING
River engineering is the process of planned human intervention in the course, characteristics or flow of a river with the intention of producing some defined benefit. People have intervened in the natural course and behaviour of rivers since before recorded history - to manage the water resources, to protect against flooding or to make passage along or across rivers easier. From Roman times, rivers have been used as a source of hydropower. From the late 20th century, river engineering has had environmental concerns broader than immediate human benefit and some river engineering projects have been concerned exclusively with the restoration or protection of natural characteristics and habitats.

In the United States river engineering is often called hydromodification, a term which also includes alterations to non-riverine water bodies such as coastal waters (estuaries and bays) and lakes. The U.S. Environmental Protection Agency (EPA) has defined hydromodification as the "alteration of the hydrologic characteristics of coastal and non-coastal waters, which in turn could cause degradation of water resources."

Before undertaking any river engineering, it is most important that the physical characteristics of the river is investigated, for these vary greatly in different rivers, being dependent upon the general configuration of the land, the nature of the surface strata and the climate of the country which the rivers traverse. Legislation in many countries, including in Europe and the U.S., also requires an environmental impact assessment.




19- SANITARY ENGINEERING
Sanitary engineering is the application of scientific or mathematical principles with to the field of sanitation, especially in regards to its effect on public health.

The term sanitary engineering is sometimes viewed as an obsolete term for environmental engineering. It is, however, more limited in its scope and is not concerned with environmental factors that do not have an immediate and clearly understood effect on public health. Areas outside the purview of sanitary engineering include traffic management, concerns about noise pollution or light pollution, aesthetic concerns such as landscaping, traffic management, and environmental conservation as it pertains to plants and animals.

Although sometimes considered synonymous with sanitary science, the phrase sanitary engineering refers specifically to an applied science in which engineering principles are utilized rather than just studied or improved.

Skills within this field are usually employed for the primary goal of disease prevention within human beings by assuring a supply of healthy drinking water, removing garbage from inhabited areas, and so on.

Compared to (for example) electrical engineering or mechanical engineering which are concerned primarily with closed systems, sanitary engineering is a very interdisciplinary field which may involve such elements as hydraulics, constructive modelling, information technology, project design, microbiology, pathology and the many divisions within environmental science and environmental technology. In some cases, considerations that fall within the field of social sciences must be factored in as well.

Although sanitary engineering may be most associated with the design of sewers, sewage treatment and waste water treatment facilities, recycling centers, public landfills and other things which are constructed, the term applies equally to (for example) a plan of action to reverse the effects of water pollution or soil contamination in a specific area.



20- SEWAGE ENGINEERING
Sewage treatment, or domestic wastewater treatment, is the process of removing contaminants from wastewater and household sewage, both runoff (effluents) and domestic. It includes physical, chemical, and biological processes to remove physical, chemical and biological contaminants. Its objective is to produce a waste stream (or treated effluent) and a solid waste or sludge suitable for discharge or reuse back into the environment. This material is often inadvertently contaminated with many toxic organic and inorganic compounds.



21- STRUCTURAL ENGINEERING
Structural engineering is a field of engineering dealing with the analysis and design of structures that support or resist loads. Structural engineering is usually considered a specialty within civil engineering, but it can also be studied in its own right.

Structural engineers are most commonly involved in the design of buildings and large nonbuilding structures but they can also be involved in the design of machinery, medical equipment, vehicles or any item where structural integrity affects the item's function or safety. Structural engineers must ensure their designs satisfy given design criteria, predicated on safety (e.g. structures must not collapse without due warning) or serviceability and performance (e.g. building sway must not cause discomfort to the occupants).

Structural engineering theory is based upon physical laws and empirical knowledge of the structural performance of different geometries and materials. Structural engineering design utilises a relatively small number of basic structural elements to build up structural systems that can be very complex. Structural engineers are responsible for making creative and efficient use of funds, structural elements and materials to achieve these goals.


22- SURVEYING
Surveying or land surveying is the technique and science of accurately determining the terrestrial or three-dimensional space position of points and the distances and angles between them. These points are usually on the surface of the Earth, and are often used to establish land maps and boundaries for ownership or governmental purposes. In order to accomplish their objective, surveyors use elements of geometry, engineering, trigonometry, mathematics, physics, and law.

An alternative definition, per the American Congress on Surveying and Mapping (ACSM), is the science and art of making all essential measurements to determine the relative position of points and/or physical and cultural details above, on, or beneath the surface of the Earth, and to depict them in a usable form, or to establish the position of points and/or details.

Furthermore, as alluded to above, a particular type of surveying known as "land surveying" (also per ACSM) is the detailed study or inspection, as by gathering information through observations, measurements in the field, questionnaires, or research of legal instruments, and data analysis in the support of planning, designing, and establishing of property boundaries. It involves the re-establishment of cadastral surveys and land boundaries based on documents of record and historical evidence, as well as certifying surveys (as required by statute or local ordinance) of subdivision plats/maps, registered land surveys, judicial surveys, and space delineation. Land surveying can include associated services such as mapping and related data accumulation, construction layout surveys, precision measurements of length, angle, elevation, area, and volume, as well as horizontal and vertical control surveys, and the analysis and utilization of land survey data.

Surveying has been an essential element in the development of the human environment since the beginning of recorded history (ca. 5000 years ago) and it is a requirement in the planning and execution of nearly every form of construction. Its most familiar modern uses are in the fields of transport, building and construction, communications, mapping, and the definition of legal boundaries for land ownership.


23- TRAFFIC ENGINEERING
Traffic engineering is a branch of civil engineering that uses engineering techniques to achieve the safe and efficient movement of people and goods. It focuses mainly on research and construction of the immobile infrastructure necessary for this movement, such as roads, railway tracks, bridges, traffic signs and traffic lights.

Increasingly however, instead of building additional infrastructure, dynamic elements are also introduced into road traffic management (they have long been used in rail transport). These use sensors to measure traffic flows and automatic, interconnected guidance systems (for example traffic signs which open a lane in different directions depending on the time of day) to manage traffic, especially in peak hours.

The relationship between lane flow (Q) (vehicles per hour) maximum speed (V) (kilometers per hour) and density (K) (vehicles per kilometer) is Q = KV. Observation on limited access facilities suggests that up to a maximum flow, speed does not decline while density increases, but above a critical threshold, increased density reduces speed, and beyond a further threshold, increased density reduces flow as well.

Therefore, managing traffic density by limiting the rate that vehicles enter the highway during peak periods can keep both speeds and lane flows at bottlenecks high. Ramp meters, signals on entrance ramps that control the rate at which vehicles are allowed to enter the mainline facility, provide this function (at the expense of increased delay for those waiting at the ramps).

Highway safety engineering is a branch of traffic engineering that deals with reducing the frequency and severity of crashes. It uses physics and vehicle dynamics, as well as road user psychology and human factors engineering, to reduce the influence of factors that contribute to crashes.



24- TRANSPORTATION ENGINEERING
Transport engineering (or transportation engineering) is the science of safe and efficient movement of people and goods (transport). It is a sub-discipline of civil engineering.

The planning aspects of transport engineering relate to urban planning, and involve technical forecasting decisions and political factors. Technical forecasting of passenger travel usually involves an urban transportation planning model, requiring the estimation of trip generation (how many trips for what purpose), trip distribution (destination choice, where is the traveler going), mode choice (what mode is being taken), and route assignment (which streets or routes are being used). More sophisticated forecasting can include other aspects of traveler decisions, including auto ownership, trip chaining (the decision to link individual trips together in a tour) and the choice of residential or business location (known as land use forecasting). Passenger trips are the focus of transport engineering because they often represent the peak of demand on any transportation system.

The design aspects of transport engineering include the sizing of transportation facilities (how many lanes or how much capacity the facility has), determining the materials and thickness used in pavement, designing the geometry (vertical and horizontal alignment) of the roadway (or track).

Operations and management involve traffic engineering, so that vehicles move smoothly on the road or track. Older techniques include signs, signals, markings, and tolling. Newer technologies involve intelligent transportation systems, including advanced traveler information systems (such as variable message signs), advanced traffic control systems (such as ramp meters), and vehicle infrastructure integration. Human factors are an aspect of transport engineering, particularly concerning driver-vehicle interface and user interface of road signs, signals, and markings.



25- URBAN ENGINEERING
Municipal or Urban engineering is concerned with municipal infrastructure. This involves specifying, designing, constructing, and maintaining streets, sidewalks, water supply networks, sewers, street lighting, municipal solid waste management and disposal, storage depots for various bulk materials used for maintenance and public works (salt, sand, etc), public parks and bicycle paths. In the case of underground utility networks, it may also include the civil portion (conduits and access chambers) of the local distribution networks of electrical and telecommunications services. It can also include the optimizing of garbage collection and bus service networks. Some of these disciplines overlap with other civil engineering specialties, however municipal engineering focuses on the coordination of these infrastructure networks and services, as they are often built simultaneously, and managed by the same municipal authority.

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