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| Crane-independently climbed from floor to floor in weekly cycles  In the new city district "Costa del Este" close to Panama City, the Torre 5 Business Park is currently being developed. The realisation of a 25-storey office tower block features a special construction method: for all vertical structural components in particular, the walls of the building cores reinforced concrete is used while a steel skeleton with precast slabs forms the horizontal structures. This construction requires the use of self-climbing formwork for the concrete walls. For this, PERI planned a cost-effective and safe ACS solution.After completion, the office building will reach a height of 100 m. The Torre 5 is the first structure in Panama which will have been constructed using this building method. This requires very close co-operation between the construction company and the formwork supplier's engineers. PERI supported the Ripard Holding Corporation during the tendering phase and developed a range of formwork solutions. In the process, PERI design engineers from Panama cooperated with PERI engineers from Spain and jointly created the most economical climbing solution for the customer. By this means, it was possible to specify all technical requirements even before the contract had been awarded at the start of the project, determining and coordinating of all construction details could then take place. The support of the PERI engineers and, in particular, the regular on-site meetings ensure that the climbing solution is effectively implemented. A considerable challenge was to realise both cores completely with ACS self-climbing technology the building method along with the short construction period resulted in the necessity of a crane-independent solution for all walls. The building site team achieved the planned weekly concreting cycles after a very short training period thanks to the practicable manageability, easy adjustment as well as the system's high level of safety. For the climbing solution, different variants of the ACS self-climbing system were used. The different versions of the modular system can be combined as required and, as a result, can be adapted to suit the various structural forms as well as the planned construction sequences and cycle times. In this way, an optimal work flow is achieved. In Panama, the project-specific combination of predominantly standard parts together with a number of special components allows, among other things, bridging large spans of almost 9.00 m. For all climbing procedures, ACS 100 climbing devices are being used. The smooth and uniform climbing operations characterize the high level of safety and quality of the climbing system. On the climbing scaffold, VARIO GT 24 girder wall formwork is used to form the mostly 50 cm thick walls. For both cores, a height of 4.90 m is concreted per cycle on a weekly basis. This results in an area of around 1, 500 mē of formwork per week. For providing a reliable supply of concrete, a placing boom was integrated into the PERI concept. Thus, apart from the wall formwork, this placing boom is also climbed crane-independently from floor to floor. In addition, this solution makes an important contribution for ensuring optimal construction progress. The new "Costa del Este" city district lies to the east of Panama City. The designation of the area as an export development zone offers many advantages for those companies which have started operations there: they profit through being exempt from tax, customs duty and other levies, and are allowed to hire workers in accordance with a special employment law. Furthermore, the close proximity to the free-trade area allows the use of established distribution channels. As a result, many new residential buildings, shopping centres and industrial installations are currently being constructed. In addition, the popular region offers direct access to the urban expressways and bypasses as well as the international airports in the region. write your comments about the article :: Đ 2011 Construction News :: home page |