PERI GmbH - Formwork, Scaffolding, Engineering - Cuatro Torres Highrise, Madrid, Spain

The Spanish building complex, Cuatro Torres, in August 2006: The Torre Repsol (left) and the Torre de Cristal (centre) accept anesthetized the 100-metre mark; the Torre Espacio (right), with over 150 metres, has already started the final phase.Store this angel in big sizeReaching for the sky: PERI ACS self-climbing formwork fulfils a advanced ambit of requirements in account cycles

With the alleged "Cuatro Torres”, currently beneath architecture in the Spanish capital, Madrid, a alluringly advised multi-storey circuitous is bound demography shape. The development includes the Torre Espacio, the Torre de Cristal and the Torre Repsol. Apart from ambience new annal for Spanish architecture heights – Madrid's Barajas Airport had to adapt its emergency flight paths due to the acme of this activity – these absorbing building allure the acuteness through assorted appropriate styles of architecture.

The Weissenhorn-based formwork and arch manufacturer, PERI, offered the a lot of cost-effective band-aid in anniversary case on the base of the ACS self-climbing formwork for a advanced ambit of requirements. Being crane and weather-independent has meant operational speeds can be continuously maintained which ensures that best abundance is acquired throughout. PERI VARIO GT 24 axle bank formwork, alternating with abounding added PERI formwork and arch systems, supplement the formwork band-aid perfectly.

Torre Espacio
With over fifty floors, the Torre Espacio has an all-embracing acme of 223 metres. Around the three centrally-arranged cores, the initially square-shaped arena plan changes into an egg-shaped form. The 15 m x 10 m ellipsoidal axial amount appearance capricious bank thicknesses amid 40 cm and 1.00 m, and is belted by two U-shaped, 30 cm blubbery ancillary cores. Although the 120 m² VARIO bank formwork is army on alone a individual PERI ACS G self-climbing assemblage (G = Gallows) for the two crabbed cores, added requirements had to be accomplished for operations in the axial core. With the PERI ACS P arrangement (P = Platform), the contractors are able to accompanying position 450 m² bank and slab formwork as able-bodied as the axle formwork in one aggressive sequence. The axial agreement bang can aswell be climbed with the ACS P; a appropriate animate architecture ensures a safe alteration of endless via the ACS into the building.

Torre de Cristal
The 249 m top Torre de Cristal was the conception of the Argentine architect, César Antonio Pelli, who was amenable for the Petronas Towers in Malaysia. Built ten years ago, the again accomplished architecture in the apple was erected aswell application PERI ACS self-climbing formwork. For the amount of the Torre de Cristal, all three versions of the modular ACS arrangement are accepting acclimated – no botheration actuality as the ACS R (R = Regular), ACS P (Platform) and ACS G (Gallows) can plan in alongside ensuring optimal alive procedures and, area required, can be calmly and bigger combined. Altogether, 1,150 m² VARIO bank formwork, including the agreement boom, accept been broadcast on ten alone aggressive units. As the architecture increases in height, the bank thicknesses abate from 1.20 m to 70 cm. Special adapters ensure that these offsets can be climbed over after any problems. In the high levels, the Cristal alien bluff has an accretion chamfer due to a connected change in the arena plan at all four edges which gives the architecture the actualization of a able crystal. The amount aswell undergoes cone-shaped in the arena plan over three floors. Adjusting to the capricious geometry with the consistent absorbed walls takes abode application PERI ACS and VARIO GT 24 aural the arrangement itself.

Torre Repsol
With a acme of absolutely 250 metres, the Torre Repsol dominates the new multi-storey architecture circuitous in what will eventually become the accomplished architecture in Spain. Sir Norman Foster, the acclaimed English artisan and Pritzker winner, has advised this anatomy with two evidently positioned able accurate cores. Each amount contains seven elevators, stairs and account shaft. Between the two characteristic alien columns, attic levels are abiding agnate to that begin in a shelf system. Three average animate platforms backpack eleven to twelve floors in anniversary case. The VARIO GT 24 axle bank formwork and PERI ACS bout the circuitous arena plan with bank thicknesses amid 30 cm and 2.00 m perfectly. During the operational planning, PERI engineers aswell had to crop into application the architecture website crane which is positioned in the core. From the acknowledging anatomy for the agreement bang up to the everyman abeyant finishing belvedere for the appropriate animate fittings, the ACS assemblage has an all-embracing acme of 25 metres in the across of the elevator shafts. By application the PERI aggressive solution, the contractors are auspiciously advancement the planned 4.70 m attic acme account aeon for both cores.

Tight schedule
The achievement of all barrio is planned for amid May 2007 and the alpha of 2008. In adjustment to be able to advance this bound schedule, added PERI formwork systems in accession to the ACS and VARIO are accepting bigger acclimated on this all-embracing architecture site. The failing aluminium PERI SKYDECK slab formwork with chip drophead, for example, allows arresting to crop abode in the beeline time possible. This agency that girders and panels can be acclimated for the next aeon alone two canicule afterwards concreting has taken place. The PERI UP Rosett modular scafold arrangement has aswell been able to prove its versatility: as blazon activated falsework, advised for safe alteration of endless at ample heights as able-bodied as for use as amount building with alternating access units.

Construction website details

Contractors:
OHL Group, Madrid (Torre Espacio)
Dragados (Torre de Cristal)
ARGE Torre 1, FCC/Dragados (Torre Repsol)

Field Service:
PERI Spain (www.peri.es) and PERI Weissenhorn (www.peri.de)

PERI GmbH
Formwork and Shoring
P.O. Box 1264
89259 Weissenhorn
Tel.: +49/ 73 09/ 9 50-0
Fax: +49/ 73 09/ 9 51-0
www.peri.de
info@peri.de

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PERI Editorial Team
Tel.: +49/ 73 09/ 9 50-1 18
Fax: +49/ 73 09/ 9 51-1 18
redaktion@peri.de
www.peri.de/ww/en/pub/presse/oct_01_06.cfm

PERI was founded in 1969 and is today one of the arch providers of formwork and axle systems. Along with the address in Weißenhorn, Germany, the aggregation has 42 all-embracing subsidiaries and 70 banal yards about the world. The aggregation has over 4.000 advisers of which 700 are engineers (as of 2005). 2005 revenues were added than 760 actor Euros.