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| Self-climbing technology comprehensively combined  Porta Nuova is changing the appearance of the fashion city of Milan. The "Porta Nuova Garibaldi" building complex is currently under construction – several tower blocks, up to 220 m high and arranged in a circle around a three-storey centre with a 100 m diameter. With the help of detailed planning and modern systems, formwork and scaffolding specialist, PERI, accepted the challenge to complete one standard floor per week. In addition, a high level of safety has accelerated the building progress of the two imposing towers.With a height of 220 m, the so-called Tower A is the highest building in Italy. It comprises 32 floors while Tower B follows with 23 storeys and is 102 m high. Each of the two towers has one central and two side reinforced concrete cores. For an optimised work sequence, two PERI ACS self-climbing variants were combined, which provided a total of 101 ACS climbing units and 19 hydraulic pumps for crane-independent shuttering, striking and climbing. Furthermore, two placing boom masts have been integrated which are then automatically climbed with the rest of the equipment. Working without a crane and in all weathers accelerates the procedures on the construction site and are independent of each other. As a result, the planned working rhythm can be maintained without any problems. Combined with the ACS climbing platforms and brackets, over 2,500 m˛ of formwork ensure that the often circular walls are brought into shape. In addition, pre-mounted VARIO GT 24 wall formwork elements were delivered to the jobsite – having previously been accurately fitted together in the PERI assembly hall. A further 2,500 m˛ of slab formwork also guarantee fast forming times for the slabs: the SKYDECK panel slab formwork with the systematic assembly sequence and drophead system for early striking can follow the extremely tight concreting cycle times of the cores. The RCS construction kit supplements the PERI overall solution and significantly accelerates work on the jobsite. In the form of the RCS climbing protection panel, the rail climbing system provides a safe 250 m long protective shield for the rounded floors under construction. In order to be able to also work crane-independently during the vertical transport of the SKYDECK formwork panels, two RCS formwork lifts have been integrated into the protection panel solution. For both applications, the experienced construction site team of Colombo Costruzioni is using mobile RCS self-climbing devices in order to carry out rail-guided climbing as well as being crane-independent. Milan´s ambitious Porta Nuova urban planning project connects the three districts of Garibaldi, Varesine and Isola with each other. Where previously old industrial facilities had created a longstanding eyesore on the cityscape, modern apartment and office buildings, hotels along with meeting and cultural centres are now being developed on an area of over 290,000 m˛ – to a large extent a car-free zone and featuring generously-sized green open spaces. Renowned architect, César Pelli, was responsible for the design of the Porta Nuova Garibaldi building complex. write your comments about the article :: © 2010 Construction News :: home page |