Post on 07-Aug-2018
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CORE DESIGN
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Defnition O 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
loadbearing highrise building system.
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Characteristic
• Shape of core
• !umber of cores
• "ocation of cores
• #rrangement of cores
• $eometry of building as generator of core
form
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Function
• Tying the building together to act as a unit
• To ma%imi&e fle%ibility in layout
• #s shear wall systems to provide the
necessary lateral stability for the building
• 'esist lateral forces from any direction
• Carries gravity loads
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Elements
• (lectrical ) Telephone
• *iping and risers
• Transportation
• +ans room
• Toilets
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PLACEMENT
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A!anta"es an Disa!anta"es• ff Center
- #dvantages• #ll window or building perimeter space to be used for
offices• ore fle%ibility in ma%imum depth and arrangement of
spaces
• #ffords the opportunity of developing small secluded spacein the relatively narrow portion of the floor plan where thecore is closes to the e%terior walls.
- /isadvantages• *resent some problems of access
• "ess fle%ibility of tenant distribution
• 'emote and thus less convenient to the far sides andcorners of the building
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CENTRAL CORE
• Central - #dvantages
• #llows all window all window space to be utili&ed as rental of thebuilding plan will permit offices of verging depths to receive natural
light• (%tremely convenient of access and in some cases may be
e0uidistant for all side• Simplifies area division ) provides good fle%ibility of tenant
distribution in the some way• 1ori&ontal utility runs may also relatively e0uidistant from the core• Combine with a s0uare building plan, bearing e%terior ) core walls,
this location permits a floor plan tree of columns and thus totallyfle%ible for office layout
• /isadvantages• The central interior location limits the depth of offices in the mid
&one of each floor • 2t re0uires an access corridor around its perimeter
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MATERIAL
• Reinforced concrete
- large net tension forces e%ist can negate the inherent efficiencyof concrete in compression resistance
- 3alls become thick
• Concrete - +ireresistance, in particular of lift and piping shafts, is good - (%ecution is efficient - "ateral forces can be transmitted employing the surrounding skeleton - sufficient stiffness
• Steel - "arge and costly - achieve its lateral stability.
- necessary core stiffness - relatively rapid assemblage of the prefabricated members. - (nclose space, no e%tra consideration need to be given to fire proofing. - "ack of ductility - 'espect to earth 0uake loading
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Structure
• Cantilever floor
• 1anging floor
• Coreinr.c frame• 4unched hanging floors
• 4unched cantilever floors
• Composite
• Coreinsteel frame
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S#stem
• Coreinframe
• Cantilevercore
• Composite• Corecable
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• CONTIN$E CORE %