Post on 17-Dec-2015
The typical floor plate of the standard commercial office
structure contains the following:
• Vertical Circulation Core
• Open Lease Space
• Optional public corridor.
The Building Core of the Commercial building contains
• Passenger Elevators & Lobby
• Service Elevator
The Building Core of the Commercial building contains
• Passenger Elevators & Lobby
• Service Elevator
• Service Elevator Vestibule
The Building Core of the Commercial building contains
• Passenger Elevators & Lobby
• Service Elevator
• Service Elevator Vestibule
• Mechanical Room
The Building Core of the Commercial building contains
• Passenger Elevators & Lobby
• Service Elevator
• Service Elevator Vestibule
• Mechanical Room
• Vertical Chase
Core Location
The Building Core can take any of basic locations relative to the floor plate.
• Central Core• Off- set Core• Exterior Core• Split Core
Central Core Location
• In the central core the lease depth is relatively equal around the core of the building.
Central Core Location
• In the central core the lease depth is relatively equal around the core of the building.
• The Tenant can lease the
entire floor plate
Off- Set Core Location
• The off Set-Core places the core off center creating differing lease depths.
Off- Set Core Location
• The off Set-Core places the core off center creating differing lease depths.
• This provides greater leasing options.
Off- Set Core Location
Jean Nouvel Torre AgbarBarcelona, Spain
Split Core Location
• The Split core divides the core with a central space, all components of the core are accessed from this central space.
Off- Set Core Location
• This eliminates the need for any peripheral access corridor and lease space can extend right up to the walls of the core elements.
Split Core Location
• The Split Core can be divided in any number of ways. It should be noted that this increases the depth of the core and therefore the size of the floor plate.
Split Core Location
• The lease area can here too be divided but access must still be maintained to two means of egress in case of fire.
Exterior Core Location
• In the Exterior Core configuration the core is pulled either to one side or edge.
• If the core is pushed to one side creating a ‘dead wall’ this can be used to advantage where poor views or party walls present a problem.
Exterior Core Location
• The Core can also be isolated as a separate mass element independent from the lease floor plate.
Elevator Configurations in Tall Buildings
Different banks of elevators serve different floorsDifferent banks of elevators serve different floors
A
1-20
B
21-40
Elevator Configurations in Tall Buildings
Lobby
Unused Elevator lobbies are used to hold core elements such as restrooms or mechanical
M
W
M
W
Elevator Configurations in Tall Buildings
Elevator banks drop out of the core as they are no longer needed.
Elevator Configurations in Tall Buildings
LobbyLease Space
As elevator banks drop out the space becomes lease space or the floor plate is reduced
Elevator Configurations in Tall Buildings
The reduction in the core due to the drop out of elevator banks allows for the increase of lease space or reduction of floor plate allowing the building to “taper”.
Elevator Configurations in Tall Buildings
Lobby
It may become necessary to relocate the fire egress stairs to maintain efficiency of the lease space or for design purposes
Elevator Configurations in Tall Buildings
To minimize the square footage of the core on very tall buildings architects can stack the elevator banks and use express elevators to sky lobbies. Banks of elevators service only a set of designated floors while movement between them is achieved by the express system.
Lease Space Planning
Lease space can be arranged in basically two general configurations:
• Perimeter Office
• Executive Core
Lease Space Planning
The Perimeter Office
In the perimeter office, private managerial offices line the outside wall of the building.
Their views make them prime locations
The corners of the building are then the most sought after. These are often reserved for the highest staff level. Architects often facet the buildings corners to create more corner offices.
Lease Space Planning
The Executive Core
Increasingly we see the introduction of the executive core which moves the executive offices to the center of the floor plate.
This allows greater light penetration and maximizes the number of people who get a view.
Lease Space Planning
Residential Cores
The typical residential core is smaller
because it will usually not require as many elevators and there is no need for the public restrooms.
Residential Cores
The Residential Core consists of
• Fire Stairs• Elevator Lobby• Service Elevator • Vestibule
Residential Cores
The Residential Core consists of
• Fire Stairs• Elevator Lobby• Service Elevator • Vestibule• Mechanical Room
Residential Cores
The Residential Core consists of
• Fire Stairs• Elevator Lobby• Service Elevator • Vestibule• Mechanical Room• Trash Chute
Residential Layouts
• It is common to push all major spaces to the perimeter.
• Closed spaces such as bathrooms, closets mechanical closets, and kitchens are often pushed toward the core.
Residential Cores
• This is because code calls for all major rooms to be accessible to the perimeter for fire rescue.
• It also allows for maximum light penetration