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CORE DESIGN

CORE DESIGN. Definition Of Core.

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CORE DESIGN

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  1. CORE DESIGN

  2. 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 toilet facilities, 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.

  3. Characteristic • Shape of core • Number of cores • Location of cores • Arrangement of cores • Geometry of building as generator of core form

  4. Function • Tying the building together to act as a unit • To maximize flexibility in layout • As shear wall systems to provide the necessary lateral stability for the building • Resist lateral forces from any direction • Carries gravity loads

  5. Elements • Electrical & Telephone • Piping and risers • Transportation • Fans room • Toilets

  6. PLACEMENT

  7. Advantages and Disadvantages • Off Center • Advantages • All window or building perimeter space to be used for offices • More flexibility in maximum depth and arrangement of spaces • Affords the opportunity of developing small secluded space in the relatively narrow portion of the floor plan where the core is closes to the exterior walls. • Disadvantages • Present some problems of access • Less flexibility of tenant distribution • Remote and thus less convenient to the far sides and corners of the building

  8. CENTRAL CORE • Central • Advantages • Allows all window all window space to be utilized as rental of the building plan will permit offices of verging depths to receive natural light • Extremely convenient of access and in some cases may be equidistant for all side • Simplifies area division & provides good flexibility of tenant distribution 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 totally flexible 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

  9. MATERIAL • Reinforced concrete • large net tension forces exist can negate the inherent efficiency of 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

  10. Structure • Cantilever floor • Hanging floor • Core-in-r.c frame • Bunched hanging floors • Bunched cantilever floors • Composite • Core-in-steel frame

  11. System • Core-in-frame • Cantilever-core • Composite • Core-cable

  12. CONTINUE CORE 2

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