Torre Caja Madrid

TORRE CAJA MADRID

ARCHITECT: NORMAN FOSTER LOCATION: MADRID, SPAIN 2ND HIGHEST TOWER IN SPAIN

CONSTRUCTION: HARLVORSON & CO AREA: 7500 SQUARE METER BUILD TIME: 2009 TOTAL HEIGHT: 250 M

Concept: 1_ overlooking view on Madrid’s business zone 2_ ecological design 3_ flexibility in floor space 4_ minimum core space

Design decison: 1_ overlooking view

RECTANGULAR ARCH

2_ ecological design

SERVED ZONE IN NORTH SOUTH SERVICE TO THE EDGES

3_ flexibility in floor space 4_ minimum core

SPLIT CORE

Client’s criteria:

1_ structure expressing client’s progressive environmental approach

2_ sustainable workplace of 3600 teams in one location

Fig: Madrid business district

Road network Parking entry From secondary road Pedestrian entry From primary road

Total height 250 M

Occupied height 210 M Number of floor 11

Number of floor 12

Number of floor 11

Fig: Torre Caja Madrid_ Auditorium level plan

Why SPLIT CORE?:

1. Least cooling load (natural ventilation possible) 2. Cores in east and west reduce high solar gain 3. Air conditioning load in east west core= 1.5/ A/C load in north south 4. No fire fighting pressurization duct needed 5. Solar buffers enable energy saving

Total site area: 7500 square meters Building foot print: 3155 square meters Typical floor area: 1200 sqm Gross floor area: 107966 square meters Floors above ground: 49 Floors below ground: 5 Elevators: 19 Parking space 1150 cars Cladding: unifying curtain wall with triple glazed units with solar protective coating.

Fig: Foundation plan of Torre Caja Madrid

Plan @ ground level Passenger elevators Fire stair Service elevator

Plan @ auditorium level Passenger elevators Fire stair Service elevators Escalator Toilet

Plan @ 1st office level zone Passenger elevators Fire stair

Service elevators Escalator Toilet

Plan @ mid level Passenger elevators Fire stair

Service elevators Escalator Toilet

Plan @ upper level Passenger elevators Fire stair

Service elevators Escalator Toilet

Fire stair Service elevator

Elevator Escalator

3

4

5 4 2 5

3

1 Elevator

2 Escalator

1

Core details: Elevator grouping type_ a) 7 car grouping (4+3 face to face) b) 3 car grouping (side by side) Escalator_ parallel arrangement in two sides of core Fire exit_ @ the crisscross position of the core separate from the building by door Toilet types_ a) in between the lift lobby of upper or lower level (lift lobby of G/F= toilet of auditorium level) b) in tenant area (mid level)

Fire stair Mechanical plant floor Toilet Elevator Escalator

Parking details: a) basement parking b) 5 levels c) 1 level for parking, 4 levels of mechanical plant d) 1150 cars accommodation

Fig: section in North-South direction

Fig: section in East-west direction

Construction Details

Construction Details

Interior column Belt truss

Fig: load distribution on Vierendeel girder Vertical member

Exterior columns

Top & Bottom chord

Interior columns

Belt truss