Civil Engineering

3 05 2008

From Wikipedia, the free encyclopedia

Civil engineering is a professional engineering discipline that deals with the design, construction and maintenance of the physical and natural built environment, including works such as bridges, roads, canals, dams and buildings.[1][2][3] Civil engineering is the oldest engineering discipline after military engineering,[4] and it was defined to distinguish it from military engineering.[5] It is traditionally broken into several sub-disciplines including municipal engineering, environmental engineering, geotechnical engineering, structural engineering, transportation engineering, wind engineering, geographic information system, water resources engineering, materials engineering, coastal engineering,[4] surveying, and construction engineering.[6]

Engineering has been an aspect of life since the beginnings of human existence. Civil engineering might be considered properly commencing between 4000 and 2000 BC in Ancient Egypt and Mesopotamia when humans started to abandon a nomadic existence, thus causing a need for the construction of shelter. During this time, transportation became increasingly important leading to the development of the wheel and sailing. The construction of Pyramids in Egypt (circa 2700-2500 BC) might be considered the first instances of large structure constructions. Other ancient historic civil engineering constructions include the Parthenon by Iktinos in Ancient Greece (447-438 BC), the Appian Way by Roman engineers (c. 312 BC), and the Great Wall of China by General Meng T’ien under orders from Ch’in Emperor Shih Huang Ti (c. 220 BC).[6]

Until modern times there was no clear distinction between civil engineering and architecture, and the term engineer and architect were mainly geographical variations referring to the same person, often used interchangeably.[7] In the 18th century, the term civil engineering began to be used to and exchange, and in the construction of ports, harbours, moles, breakwaters and lighthouses, and in the art of distinguish it from military engineering.[5]

The first self-proclaimed civil engineer was John Smeaton who constructed the Eddystone Lighthouse.[6][4]
In 1771 Smeaton and some of his colleagues formed the Smeatonian Society of Civil Engineers, a group of leaders of the profession who met informally over dinner. Though there was evidence of some technical meetings, it was little more than a social society.

In 1818 the Institution of Civil Engineers was founded in London, and in 1820 the eminent engineer Thomas Telford became its first president. The institution received a Royal Charter in 1828, formally recognising civil engineering as a profession. Its charter defined civil engineering as:[8]

“…the art of directing the great sources of power in nature for the use and convenience of man, as the means of production and of traffic in states, both for external and internal trade, as applied in the construction of roads, bridges, aqueducts, canals, river navigation and docks for internal intercourse navigation by artificial power for the purposes of commerce, and in the construction and application of machinery, and in the drainage of cities and towns.”

The first degree in Civil Engineering in the United States was awarded by Rensselaer Polytechnic Institute[9] in 1835.

The building of large structures can be traced back to Ancient Rome and Ancient Greece, following the Ancient Egyptians. They include the Lighthouse of Alexandria and the Great Pyramids as well as countless temples and funerary monuments, such as obelisks. The Romans developed the most useful structures throughout their empire, including especially aqueducts, insulae, harbours, bridges, dams and roads.

Civil engineering is the application of physical and scientific principles, and its history is intricately linked to advances in understanding of physics and mathematics throughout history. Because civil engineering is a wide ranging profession, including several separate specialized sub-disciplines, its history is linked to knowledge of structures, materials science, geology, soils, hydrology, environment, mechanics and other fields.

Throughout ancient and medieval history most architectural design and construction was carried out by artisans, such as stone masons and carpenters, rising to the role of master builder. Knowledge was retained in guilds and seldom supplanted by advances. Structures, roads and infrastructure that existed were repetitive, and increases in scale were incremental.[10]

One of the earliest examples of a scientific approach to physical and mathematical problems applicable to civil engineering is the work of Archimedes in the 3rd century BC, including Archimedes Principle, which underpins our understanding of buoyancy, and practical solutions such as Archimedes Screw.


Archimedes Screw





Prefabricated Panels for Temporary Structures

3 05 2008

Prefabricated Panels for Temporary Structures

TECH FIELD(S)

Civil Engineering – Construction

FEATURES

Temporary structures are often used to provide quick shelter from the
elements or to partition indoor space. They must disassemble and be durable and
reusable. Many systems exist for creating temporary structures, but most require
many different parts. This invention describes a standardized panel and
clip-based system for easily assembling temporary, prefabricated indoor or
outdoor structures.
The panels come in several different sizes and two
shapes, rectangular and triangular. They are synthetic, with a lip around the
inside that has notches at designated intervals. The releasable clips fit over
the lip when the notches are aligned and slide laterally to secure the panels
together.

BENEFITS

  • Easy to assemble and disassemble
  • Stackable for transport and storage
  • Durable and reusable
  • Standardized panel sizes: Rectangles, two feet by two feet up to four
    feet by eight feet; right triangles with legs of three feet or four feet
  • Releasable clips for linear and corner connections
  • Weather-tight seal
  • Panels can be made of various materials
  • Can be insulated
  • Flexible bracing members available to help support panels
  • Can be used for temporary saunas, outdoor sales booths and interior room
    dividers, as well as shelters
  • May incorporate doors and windows

INVENTOR(S)

Jerome Johnson, Shawn L. Herkstroeter, Nathan Mielke, Andrew Schieber

INTELLECTUAL PROPERTY STATUS

Patent applied for.

CONTACT INFORMATION

Contact by Email
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have problems viewing the form, try disabling your popup blocker
software.)

Phone: ( 608 ) 262-4924

Technology Summary – WARF: T04016US – Prefabricated Panels for Temporary Structures