Post on 13-Dec-2015
Grid Plan.
By: Yohany Socas # 1110980 Alba Mora # 1110645.
Grid plan.
Plan in which streets run at right angles.
Ancient Greece
Hippodamian plan.
Grid plan.
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Ancient Grid Plan Mohenjo-daro and Harappa,
2600 BC,.
Grid plan.
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Egypt.
•Babylon, King Hammurabi.
Grid plan.
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The streets were wide and straigth
Intersected at right angles
Miletus, 479 B.C.
Roman. Teotihuacan.
Grid plan.
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Asia from the first millennium AD
Japan and Korean grid planning.For reasons of defense, the planners of Tokyo eschewed the grid plan.
Grid plan.
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Europe and its colonies.
Bastides of Southern France. 13th and 14th
Renaissance. The baroque capital city of Malta, Valletta.
Grid plan.
7Rigid grid plan
Early United States
The New Haven Colony.Philadelphia.
New York.
Grid plan.
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Late 19th century to present Ildefons Cerdà defined a concept of urban
planning, based on the grid, that he applied to the Barcelona Eixample.
Grid plan.
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Design elements: a) a very large block measuring 113m by 113m. b) square blocks with truncated corners.
c) Major roads perpendicular and diagonal measuring 50 m in width.
Benefits and criticismsFinancial cost: - is generally higher than for
patterns with discontinuous streets
Grid plan.
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- maximizes the use of the land- affect street frequency
Pedestrian and bicycle movement.
Grid plan.
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Frequent intersections and orthogonal geometry.
The grid plan form a network of streets more understandable to visitors city.
Frequency of intersections disadvantageis more difficult for people with physical limitations, children and seniors.
For bicycles this disadvantage is accentuated as their normal speed is at least double that of pedestrians.
Intersections are not only unpleasant but also dangerous.
Safety
A 2009 study suggests that land use patterns play a significant role in traffic safety and should be considered in conjunction with the network pattern.
The four-way intersections Increase total accidents significantly
The grid plan can cause steep inclines since the topology of the land is not taken into account.
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Grid plan.
Reconstruction and development
Grid plan.
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Their lack of specialization
Grid plans are found in linear settlements
Latin America, still successfully retain their grid plans.
United States and Canada reintroducing grid patterns to many cities and towns.