The grid plan or gridiron plan is a type of city plan in which streets run at right angles to each other, forming a grid. A city is an Urban area with a large Population and a particular Administrative, Legal, or Historical status A street is a Public thoroughfare in the built environment It is a Public parcel of land adjoining Buildings in an urban context In Geometry and Trigonometry, an angle (in full plane angle) is the figure formed by two rays sharing a common Endpoint, called In the context of the culture of Ancient Greece the grid plan is called Hippodamian plan. The term ancient Greece refers to the period of Greek history lasting from the Greek Dark Ages ca Hippodamus of Miletus ( or Hippodamos Greek Ἱππόδαμος (498 BC &mdash 408 BC was an ancient Greek Architect Urban Planner Physician Mathematician Meteorologist
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Ancient grid plans
The grid plan dates from antiquity and originated in multiple cultures; some of the earliest planned cities were built using grids.
By 2600 BC, Mohenjo-daro and Harappa, major cities of the Indus Valley Civilization, were built with blocks divided by a grid of straight streets, laid out in perfect right angles, running north-south and east-west. The 26th century BC is a Century which lasted from the year 2600 BC to 2501 BC Mohenjo-daro (موئن جودڑو موئن جو دڙو मोहन जोदड़ो Mound of the Dead was one of the largest city-settlements of the Indus Valley Civilization Harappa ( Urdu:, Hindi: हड़प्पा) is a City in Punjab, northeast Pakistan, about 35km (22 miles southwest The Indus Valley Civilization (Mature period 2600&ndash1900 BCE abbreviated IVC, was an ancient Civilization that flourished in the Indus River basin Each block was subdivided by small lanes.
A workers' village at Giza, Egypt (2570-2500 BC), housed a rotating labor force and was laid out in blocks of long galleries separated by streets in a formal grid. You may have been looking for the Great Pyramid of Giza. For the three pyramids of Giza visit the Giza pyramid complex. This article is about the country of Egypt For a topic outline on this subject see List of basic Egypt topics. Many pyramid-cult cities used a common orientation: a north-south axis from the royal palace and an east-west axis from the temple meeting at a central plaza where King and God merged and crossed.
Hammurabi (17th century BC) was a king of the Babylonian Empire who made Babylon one of the greatest metropolises in antiquity. Hammurabi ( Akkadian from Amorite ˤAmmurāpi, "the kinsman is a healer" from ˤAmmu, "paternal kinsman" and Rāpi Babylonia was an Amorite state in lower Mesopotamia (modern southern Iraq) with Babylon as its capital Babylon was a City-state of ancient Mesopotamia, the remains of which can be found in present-day Al Hillah, Babil Province, Iraq "Ancient" redirects here For other uses see Ancient_(disambiguation. He rebuilt Babylon, building and restoring temples, city walls, public buildings, and building canals for irrigation. The streets of Babylon were wide and straight, intersected approximately at right angles, and were paved with bricks and bitumen. Bitumen is a mixture of organic Liquids that are highly Viscous, black sticky entirely soluble in Carbon disulfide, and composed primarily
The tradition of grid plans is continuous in China from the 15th century BC onward. China ( Wade-Giles ( Mandarin) Chung¹kuo² is a cultural region, an ancient Civilization, and depending on perspective a National Guidelines put into written form in the Kaogong ji during the Spring and Autumn Period (770-476 BC) stated: "a capital city should be square on plan. The Spring and Autumn Period ( was a period in Chinese history which roughly corresponds to the first half of the Eastern Zhou dynasty (from the second half of the 8th century BC Three gates on each side of the perimeter lead into the nine main streets that crisscross the city and define its grid-pattern. And for its layout the city should have the Royal Court situated in the south, the Marketplace in the north, the Imperial Ancestral Temple in the east and the Altar to the Gods of Land and Grain in the west. "
The first planned Greek city was probably Miletus, which was rebuilt to a grid plan after 479 BC. Greece (Ελλάδα transliterated: Elláda, historically, Ellás,) officially the Hellenic Republic (Ελληνική Δημοκρατία Miletus (mī lē' təs ( Ancient Greek: Μίλητος literally Transliterated Milētos, Latin Miletus) was an Ancient Its gridded design has been credited to Hippodamus (although this may be apocryphal), a Greek intellectual associated with the Pythagoreans. Hippodamus of Miletus ( or Hippodamos Greek Ἱππόδαμος (498 BC &mdash 408 BC was an ancient Greek Architect Urban Planner Physician Mathematician Meteorologist Pythagoreanism is a term used for the Esoteric and metaphysical beliefs held by Pythagoras and his followers the Pythagoreans who were much influenced The pinnacle of Ionian grid planning however was Priene, set on very uneven ground and encompassing an acropolis. Priene ( Ancient Greek: Πριήνη, Priēnē was an ancient Greek city of Ionia (and member of the Ionian League) at the base Acropolis (Gr akros akron edge extremity + polis city pl acropoleis The grid plan was a common tool of Roman city planning, based originally on its use in military camps known as castra. Ancient Rome was a Civilization that grew out of a small agricultural community founded on the Italian Peninsula as early as the 10th century BC A military is an Organization authorized by its Nation to use force usually including use of Weapons in defending its Country (or by attacking The Latin word castra, with its singular castrum, was used by the ancient Romans to mean buildings or plots of land reserved to or constructed for use as a military One of the most striking extant Roman grid patterns can be found in the ruins of Timgad, in modern-day Algeria. Timgad ( Arabic تيمقاد, called Thamugas or Thamugadi by the Romans) was a Roman colonial town in North Africa Algeria ( ar [[Arabic]] الجزائر, Al Jaza'ir ælʤæˈzæːʔir Amazigh: ⴷⵥⴰⵢⴻⵔ Dzayer) officially the People's The Roman grid is characterized by a nearly perfectly orthogonal layout of streets, all crossing each other at right angles, and by the presence of two main streets, set at right angles from each other and called the cardo and the decumanus. In Mathematics, two Vectors are orthogonal if they are Perpendicular, i In Ancient Roman City planning, a cardo or cardus was a north-south-oriented street in cities military camps and coloniae Sometimes called In Roman city planning, a decumanus was an east-west-oriented road in a Roman city Castra (military camp or colonia.
Teotihuacan, near modern-day Mexico City, is the largest ancient grid-plan site in the Americas. Teotihuacan is an enormous archaeological site in the Basin of Mexico, containing some of the largest pyramidal structures built in the Pre-Columbian Americas Mexico City (in Spanish: Ciudad de México, México DF, México or simply Méjico) is the Capital city of Mexico The Americas are the lands of the Western hemisphere or New World, consisting of the Continents of North America and South America By AD 150, the city's grid covered eight square miles.
Asia from the first millennium AD
As Japan and the Korean peninsula became politically centralized in the 7th century AD, those societies adopted Chinese grid-planning principles in numerous locations. For a topic outline on this subject see List of basic Japan topics. Physical geography See also Geography of North Korea, Geography of South Korea Mountains cover 70 percent of the Korean Peninsula and arable plains are In Korea, Gyeongju, the capital of Unified Silla, and Sanggyong, the capital of Balhae, adapted the Tang Dynasty Chinese model. Gyeongju is an administrative division of South Korea and one of the most popular tourist destinations in South Korea Unified Silla ( 668 CE - 935 CE or Later Silla is the name often applied to the kingdom of Silla, one of the Three Kingdoms of Alternate meaning Bohai Sea Balhae (698 - 926 ( Bohai in Chinese, Пархэ in Russian) was an The Tang Dynasty ( Middle Chinese: dhɑng (June 18 618&ndashJune 4 907 was an imperial dynasty of China preceded by the Sui Dynasty and followed by The ancient capitals of Japan, such as Fujiwara-Kyô (AD 694-710), Nara (Heijô-Kyô, AD 710-784), and Kyoto (Heian-Kyô, AD 794-1868) also adapted from Tang's capital. Fujiwara-kyō (藤原京 in Japanese also Fujiwara no miyako) was the Imperial capital of Japan for sixteen years between 694 and 710 is the capital city of Nara Prefecture in the Kansai region of Japan. (IPA /kʲoːto / is a city in the central part of the island of Honshū, Japan. However, for reasons of defense, the planners of Tokyo eschewed the grid, opting instead for an irregular network of streets surrounding the Edo Castle grounds. officially, is one of the 47 prefectures of Japan and located on the eastern side of the main island Honshū. also known as, is a flatland castle that was built in 1457 by Ōta Dōkan. In later periods, some parts of Tokyo were grid-planned.
The grid-planning tradition in Asia continued through the beginning of the 20th century.
Europe and its colonies
New European towns were planned using grids beginning in the 12th century, most prodigiously in the bastides of southern France that were built during the 13th and 14th centuries. Bastides are fortified new towns built in Medieval Languedoc, Gascony and Aquitaine during the thirteenth and fourteenth centuries although This article is about the country For a topic outline on this subject see List of basic France topics. Medieval European new towns using grid plans were widespread, ranging from Wales to the Florentine region. Florence ( Italian: Firenze Florentia and Fiorenza) is the Capital City of the Italian region of Tuscany Many were built on ancient grids originally established as Roman colonial outposts.
The Roman model was also used in Spanish settlements during the Reconquista of Ferdinand and Isabella. The Reconquista (a Spanish and Portuguese word for "Reconquest" Arabic: الاسترداد, "Recapturing" was a period It was subsequently applied in the new cities established during the Spanish colonization of the Americas, after the founding of San Cristóbal de La Laguna (Canary Islands) in 1496. The Spanish colonization of the Americas was Spain 's conquest settlement and rule over much of the Western hemisphere. Coat of arms The coat of arms was granted by Queen Juana of Castile on 23 march 1510 as arms of the island of Tenerife. In 1573, King Phillip II of Spain compiled the Laws of the Indies to guide the construction and administration of colonial communities. The Laws specified a square or rectangular central plaza with eight principal streets running from the plaza's corners. Hundreds of grid-plan communities throughout the Americas were established according to this pattern, echoing the practices of earlier Indian civilizations.
The grid plan became popular with the start of the Renaissance in Northern Europe. The Renaissance (from French Renaissance, meaning "rebirth" Italian: Rinascimento, from re- "again" and nascere In 1606, the newly founded city of Mannheim in Germany was the first Renaissance city laid out on the grid plan. Mannheim is a City in Germany. With 327318 inhabitants it is the second-largest city in the state of Baden-Württemberg after the capital Stuttgart Germany, officially the Federal Republic of Germany ( ˈbʊndəsʁepuˌbliːk ˈdɔʏtʃlant is a Country in Central Europe. Later came the New Town in Edinburgh and almost the entire city centre of Glasgow, and many new towns and cities in Australia, Canada and the United States such as New Haven and Adelaide. Edinburgh ( ˈɛdɪnb(ərə Dùn Èideann) is the Capital of Scotland and is its second largest city after Glasgow. Glasgow (ˈglæzgoʊ is the largest city in Scotland and third most populous in the United Kingdom A new town, planned community or planned city is a City, Town, or Community that was carefully planned from its inception and is typically For a topic outline on this subject see List of basic Australia topics. Country to "Dominion of Canada" or "Canadian Federation" or anything else please read the Talk Page The United States of America —commonly referred to as the Adelaide is the capital and most populous city of the Australian state of South Australia, and is the fifth largest city in Australia with a
The baroque capital city of Malta, Valletta, dating back to the 16th Century, was built following a rigid grid plan of uniformly designed houses, dotted with palaces, churches and squares. Baroque art redirects here Please disambiguate such links to Baroque painting, Baroque sculpture, etc Malta, officially the Republic of Malta (Repubblika ta' Malta is a European Microstate, comprising an Archipelago of three islands Valletta ( Belt Valletta or Città Umilissima) is the capital city of Malta.
Early United States
Many of the earliest cities in the United States, such as Boston, did not start with a grid system. [1] However, even in the pre-revolutionary days some cities saw the benefits of such a layout. New Haven, one of the first colonies in America, was designed with a tiny 9-square grid at its founding in 1638. On a grander scale, Philadelphia was designed on a rectilinear street grid in 1682; one of the first cities in North America to use a grid system. Philadelphia (ˌfɪləˈdɛlfiə [2] At the urging of city founder William Penn, surveyor Thomas Holme designed a system of wide streets intersecting at right angles between the Schuylkill River to the west and Delaware River to the east, including five squares of dedicated parkland. William Penn ( October 14, 1644 – July 30, 1718) was founder and "Absolute Proprietor" of the Province of Pennsylvania, Thomas Holme (1624-1695 was the first Surveyor General of Pennsylvania. The Schuylkill River, most often ˈskuːkəl ("SKOO-kull" is a river in the U The Delaware River is a river on the Atlantic coast of the United States. Penn advertised this orderly design as a safeguard against overcrowding, fire, and disease, which plagued European cities. Holme drafted an ideal version of the grid[3].
Often, some of the streets in a grid are numbered (First, Second, etc. ), lettered, or arranged in alphabetical order. (Washington, DC has examples of all three). Washington DC ( formally the District of Columbia and commonly referred to as Washington, the District, or simply D
In the westward development of the United States, the use of the grid plan was nearly universal in the construction of new towns. The United States of America —commonly referred to as the One of the largest advantages of the adoption of the grid plan was that it allowed the rapid subdivision and auction of a large parcel of land. Subdivision is the act of dividing land into pieces that are easier to sell or otherwise develop usually via a Plat. "Auctioneer" redirects here For the DC Comics supervillain see Auctioneer (comics. For example, when the legislature of the Republic of Texas decided in 1839 to move the capital to the new site along the Colorado River, the functioning of the government required the rapid population of the town, which was named Austin. The Republic of Texas was a sovereign Nation in North America between the United States and Mexico that existed from 1836 to Year 1839 ( MDCCCXXXIX) was a Common year starting on Tuesday (link will display the full calendar of the Gregorian Calendar (or a Common The Colorado River is the 18th longest river in the United States. Charged with the task, Edwin Waller designed a fourteen block grid that fronted the river on 640 acres (exactly 1 square mile; about 2. Judge Edwin Waller ( November 4, 1800 &ndash January 3, 1881) was an entrepreneur signer of the Texas Declaration of Independence, 6 km²). After surveying the land, Waller organized the sale of 306 lots nearly immediately, and by the end of the year the entire Texas government had arrived by oxcart at the new site.
Late 19th century to the present
Ildefonso Cerdá defined a concept of urban planning, based on the grid, that he applied to the Barcelona Eixample. Ildefons Cerdà i Sunyer (in Catalan or Ildefonso Cerdá Suñer (in Spanish ( December 23, 1815 - August 21, 1876) was the progressive Barcelona ( Catalan bəɾsəˈlonə Spanish baɾθeˈlona is the capital and most populous city of the Autonomous Community of Catalonia The Eixample ( Catalan for "extension" Spanish: Ensanche) is a district of Barcelona between the old city ( Ciutat Vella)
If one were to look at maps of larger American cities, mostly east of the Mississippi River, it can be noted that the downtown areas are almost always grids, while the farther you get from the downtown the grid becomes less prevalent and the randomness of suburbia takes over. The Mississippi River is the second longest River in the United States, with a length of from its source in Lake Itasca in Minnesota to
In the United States, the grid system was widely used in most major cities and their suburbs until the 1960s. South San Jose (cropjpg||thumb|A suburban development in San Jose California. However, during the 1920s, the rapid adoption of the automobile caused a panic among urban planners, who claimed that speeding cars would eventually kill tens of thousands of small children per year. They called for an inwardly focused "superblock" arrangement that minimized through automobile traffic and discouraged it from traveling on anything but arterial roads; traffic generators, such as apartment complexes and shops, would be restricted to the edges of the superblock, along the arterial. A city block, urban block or simply block is a central element of Urban planning and Urban design. An arterial road is a moderate or high-capacity Road which is immediately below a Highway Level of service. This paradigm prevailed between approximately 1930 and 1960, especially in Los Angeles, where notable examples include Leimert Park (an early example) and Panorama City (a late-period one). Los Angeles (lɑˈsændʒələs los ˈaŋxeles in Spanish) is the largest City in the state of California and the American West Leimert Park is a neighborhood in southwestern Los Angeles California. Panorama City is a district in the San Fernando Valley region of the City of Los Angeles California.
In the 1960s, traffic engineers and urban planners abandoned the grid virtually wholesale in favor of a "street hierarchy. The street hierarchy is an Urban design technique for separating automobile through-traffic from developed areas " This is a thoroughly "asymmetric" street arrangement in which a residential subdivision--often surrounded by a noise wall or a security gate—is completely separated from the road network except for one or two connections to arterial roads. A noise barrier (also called a soundwall, sound berm, sound barrier, or acoustical barrier) is an exterior structure designed to protect In its modern form a gated community is a form of Residential community containing controlled entrances for Pedestrians Bicycles and Automobiles In a way, this is a return to medieval styles: as noted in Spiro Kostof's seminal history of urban design, The City Shaped, there is a strong resemblance between the street arrangements of modern American suburbs and those of medieval Arab and Moorish cities. Dr Spiro Konstantine Kostof (7 May 1936 - 7 December 1991 was a leading architectural historian and inspirational teacher at the University of California Berkeley. Urban design concerns the arrangement appearance and functionality of towns and cities and in particular the shaping and uses of urban Public space. The araB gene Promoter is a bacterial promoter activated by e L-arabinose binding The description Moors has referred to several historic and modern populations of Muslim (and earlier non-Muslim people of Berber and Arab descent In each case, the community unit at hand—the clan or extended family in the Muslim world, the economically homogeneous subdivision in modern suburbia—isolates itself from the larger urban scene by using dead ends and culs-de-sac. A Muslim (مسلم pronounced Muslim, not Muzlim) is an adherent of the Religion Subdivision is the act of dividing land into pieces that are easier to sell or otherwise develop usually via a Plat. "Dead End Street" redirects here For the song by The Kinks see Dead End Street (song.
Milton Keynes
One very famous use of the grid system was in the British new town of Milton Keynes. Milton Keynes ( ˌmɪltənˈkiːnz often abbreviated to MK, is a large town A new town, planned community or planned city is a City, Town, or Community that was carefully planned from its inception and is typically Milton Keynes ( ˌmɪltənˈkiːnz often abbreviated to MK, is a large town In this planned city, which began construction in 1967, a system of ten horizontal and eleven vertical roads at 1 km intervals was used with roundabouts at each intersection. Year 1967 ( MCMLXVII) was a Common year starting on Sunday (link will display full calendar of the 1967 Gregorian calendar. The kilometre ( American spelling: kilometer) symbol km is a unit of Length in the Metric system, equal to one thousand A roundabout is a type of Road junction at which Traffic enters a one-way stream around a central island The horizontal roads were all given names ending in 'way' and H or V numbers (for 'horizontal' or 'vertical', e. g. H3 Monks Way). The vertical roads were given names ending in 'street' and V numbers (for 'vertical', e. g. V6 Grafton Street). The V6 Grafton Street is a major local road in Milton Keynes. Each grid road was spaced roughly one kilometre along from the next, forming squares of approximately one square kilometre. The kilometre ( American spelling: kilometer) symbol km is a unit of Length in the Metric system, equal to one thousand Each square and roundabout was given its own name. The system provided very easy transport within the city, although it confused visitors who were unfamiliar with the system. Note the 'grid squares' thus formed are far larger than the city blocks described earlier, and the road layouts within the grid squares are generally 'organic' in form — matching the 'street hierarchy' model described above.
Benefits and criticisms
- Financial Cost
Grid street patterns are generally considered to be less expensive than a street hierarchy plan because fewer road miles are needed to serve the same population. The street hierarchy is an Urban design technique for separating automobile through-traffic from developed areas
- Pedestrianism
Pedestrians have an easier time connecting to other parts of neighboring neighborhoods and commercial businesses. A pedestrian is a person travelling on foot whether Walking or Running. Obstacles such as cul-de-sacs and busy intersections with high speed traffic that hinder or discourage pedestrianism are rarely present. "Dead End Street" redirects here For the song by The Kinks see Dead End Street (song. The grid also enhances pedestrian access to mass transit.
- Safety
Recent studies have found ([1], [2]) higher traffic fatality rates in outlying suburban areas than in central cities and inner suburbs with smaller blocks and more-connected street patterns. While some of this disparity is the result of distance from emergency medical facilities (hospitals are usually built in a fairly late stage of the development of a suburban area), it is clear that the lower speeds encouraged by the frequency of intersections decrease the severity of accidents occurring on streets within a grid plan. Emergency medical services (abbreviated to the initialism "EMS" in many countries are a branch of Emergency services dedicated to providing out-of-hospital
- Reconstruction and Development
One of the greatest difficulties with grid plans is their lack of specialisation, most of the important amenities being concentrated along the city's main arteries. Often grid plans are found in linear settlements, with a main street connecting between the perpendicular roads. Ribbon development means building houses along the roads radiating from a town Many cities, especially in Latin America, still retain their grid plans, and it is just their fixedness on that street plan that makes developing the cities further such a difficulty: For even a small slant to be made in a road several blocks need to be demolished, and applying mass transit to the grid is costly and time-consuming (hence the widespread use of bus networks).
- Addressing
House numbering can be tailored to the grid. House numbering is the system of giving a unique Number to each Building in a Street or Area, with the intention of making it easier to locate
See also
External links
References
- ^ Back Bay, Dorchester Heights, and South Boston all have grid layouts. A city block, urban block or simply block is a central element of Urban planning and Urban design. The United States of America —commonly referred to as the The Land Ordinance of 1785 was adopted by the United States Congress on May 20, 1785. The street hierarchy is an Urban design technique for separating automobile through-traffic from developed areas Dorchester Heights is the central area of South Boston. It is the highest area in the neighborhood and commands a view of both Boston Harbor and downtown
- ^ ExplorePaHistory.com
- ^ http://www.swarthmore.edu/Humanities/kjohnso1/pictures/tholme1683inch9.jpg Swarthmore College], but alleyways sprouted within and between larger blocks as the city took shape? Arguably the most famous grid plan in history is the plan for New York City formulated in the Commissioners' Plan of 1811, a visionary proposal by the state legislature of New York for the development of most of upper Manhattan<ref>Twelve Historical New York City Street and Transit Maps from 1860 to 1967 - John Landers – I SBN 1-882608-16X</li></ol></ref>
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