Torre de Collserola
Torre de Collserola | |
---|---|
Norman Foster | |
Civil engineer | Julio Martínez Calzón and Manuel Julià Vilardell |
Main contractor | Cubiertas y MZOV, S.A. |
Torre de Collserola (Catalan pronunciation:
Events
The tower has a space for event organisations, consisting of a reception room and an observation deck set 560 metres above sea level.
Construction
The tower has a hollow slip-formed, reinforced concrete main shaft of only 4.5 m diameter, which reduces to a mere 3 m to hold a radio mast which telescopes from 2.7 m to 0.7 m. The thirteen floors are surrounded by a perimeter of open stainless steel grilles and suspended from the shaft by three primary vertical steel trusses.
The total weight of the tower is 3,000 tons.
A large number of cables keep the tower upright:
- The lower guys are composed three series of 180 parallel strand cables (15 mm diameter) made from pre-tensioned high-strength steel with a polyethylene covering, each;
- The upper guys are made of three series of 7 aramid fibre cables in parallel (56 mm diameter), each terminated with a resin socket.[1] The three upper cables have a combined breaking strength of 4,200 tons.