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8/14/2019 Core Design 1
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Definition Of Core
The central of arterial part of a multistory building that
integrates functions and service needs for established
occupants. Such areas are normally composed of toiletfacilities, elevator banks, janitors closet, utilities, mechanical
facilities, smoke shafts and stair.
Core also known as facade envelope is a spatial element for
load-bearing high-rise building system.
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Characteristic
Shape of core
Number of cores
Location of cores Arrangement of cores
Geometry of building as generator of core
form
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PLACEMENT
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CENTRAL CORE
Central Advantages
Allows all window all window space to be utilized as rental of thebuilding plan will permit offices of verging depths to receive naturallight
Extremely convenient of access and in some cases may beequidistant for all side
Simplifies area division & provides good flexibility of tenantdistribution in the some way
Horizontal utility runs may also relatively equidistant from the core Combine with a square building plan, bearing exterior & core walls,
this location permits a floor plan tree of columns and thus totallyflexible for office layout
Disadvantages The central interior location limits the depth of offices in the mid-
zone of each floor It requires an access corridor around its perimeter
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MATERIAL Reinforced concrete
large net tension forces exist can negate the inherent efficiencyof concrete in compression resistance
Walls become thick
Concrete Fire-resistance, in particular of lift and piping shafts, is good Execution is efficient Lateral forces can be transmitted employing the surrounding skeleton sufficient stiffness
Steel Large and costly achieve its lateral stability.
necessary core stiffness relatively rapid assemblage of the prefabricated members. Enclose space, no extra consideration need to be given to fire proofing. Lack of ductility Respect to earth quake loading
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Structure
Cantilever floor
Hanging floor
Core-in-r.c frame Bunched hanging floors
Bunched cantilever floors
Composite
Core-in-steel frame
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System
Core-in-frame
Cantilever-core
Composite Core-cable
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CONTINUE CORE 2