Setback (architecture) - Wikipedia, the free encyclopedia
Setbacks on the Pyramid of Djoser. New York Daily News Building featuring a number of setbacks. ... of a frame building technology combined with conveniences ...
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Building Setbacks - Planning, Office of (DEP)
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setback: Definition, Synonyms from Answers.com
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MEASURING BUILDING SETBACKS
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Title: Filling The Protection Gaps
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Bayfield County Lake Superior Shoreland Erosion and Setback Home
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City of Bellevue
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City of Hilliard | Building Setback Requirements
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A building setback may mean one of two things:

• A step-like recession in a wall or
• The minimum distance (in plan) by which a building must be separated from the lot line. The front line of the building, which determines the location of the building with respect to the lot line, is called a building setback line. See Setback (land use) for information on this meaning.

Setbacks were used by ancient builders to increase the height of masonry structures by distributing gravity loads produced by the building material such as clay, stone or brick. This was achieved by regularly reducing the footprint of each level located successively farther from the ground. Setbacks also allowed the natural erosion to occur without compromizing the structural integrity of the building. The most graphic example of a setback technique is the step pyramids of Mesopotamia and Ancient Egypt, such as the Teppe Sialk or the Pyramid of Djoser.

For centuries, setbacks were a structural necessity for virtually all multi-level load-bearing masonry buildings and structures. As architects learned how to turn setbacks into an architectural feature, most setbacks were however less pronounced than in step pyramids and often skillfully masked by rich Ornament (architecture). , 1929.

The introduction of a steel frame structural system in the late 19th century eliminated the need for structural setbacks. The use of a frame building technology combined with conveniences such as elevators and motorized water pumps influenced the physical growth and density of buildings in large city. Driven by the desire to maximize the usable floor area, some developers avoided the use of setbacks, creating in many instances a range of fire safety and health hazards. Thus, the 42-story Equitable Building (Manhattan), constructed in New York city in 1915, produced a huge shadow, which effectively deprived neighboring properties of sun light.

Today many jurisdictions rely on urban planning regulations, such as zoning ordinances, which use setbacks to make sure that streets and yards are provided more open space and adequate light and air. For example, in high density districts, such as Manhattan in New York city, front walls of buildings at the street line may be limited to a specified height or number of stories. Above that height, the buildings are required to set back behind a theoretical inclined plane, called sky exposure plane, which cannot be penetrated by the building's exterior wall. For the same reason, setbacks may also be used in lower density districts to limit the height of perimeter walls above which a building must have a pitched roof or be set back before rising to the permitted height.

In addition, setbacks promote fire safety by spacing buildings and their protruding parts away from each other and allow for passage of Fire apparatus between buildings.

at the University of Illinois at Chicago widens in stages rather than setting backIn the United States, setback requirements vary among municipality. For example, the absence of sky exposure plane provisions in the Chicago Zoning Code makes the Chicago skyline quite different from the skyline of New York city where construction of tall buildings was guided by the zoning ordinance since 1916. The 1916 Zoning Resolution also provided another kind of setback guideline, one that was intended to increase the amount of public space in the city. This was achieved by increasing the minimum setback at street level, creating in each instance an open space, often referred to as plaza, in front of the building.

References

• Delirious New York, by Rem Koolhaas. Monacceli Press, reprint 1997.
• A Pattern Language, by Christopher Alexander. Oxford University Press, 1977.

External links

• http://www.nyc.gov/html/dcp/html/zone/zonehis.shtml NYC Zoning History

Setback (architecture) - Wikipedia, the free encyclopedia
A setback, sometimes called step-back, is a step-like recession in a wall. Setbacks were initially used for structural reasons, but now are often mandated by land use codes.

setback definition | Dictionary.com
pasco county building setback ... noun . 1. Surveying. the interval by which a chain or tape exceeds the length being ...

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setback synonym | Thesaurus.com
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Setback legal definition of Setback. Setback synonyms by the Free ...
A distance from a curb, property line, or structure within which building is prohibited. Setbacks are building restrictions imposed on property owners.

BSBL
Acronym Finder: BSBL stands for Building Setback Boundary Line ... Suggest new definition. This definition appears very rarely and is found in the following Acronym Finder ...

Building Setback Boundary Line - What does BSBL stand for? Acronyms ...
Acronym Definition; BSBL: Bond Strength-Bond Length (model of Atom abstraction reaction) BSBL: Bulverde/Spring Branch Library (Texas) BSBL: Building Setback Boundary Line

Litchfield Park, AZ - Land Use and Zoning Terms
The point or line of reference will be the lot line. The building setback distance is regulated in the front, rear and side yards and this distance may not be reduced without an ...

Building Setback Diagram
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