The densely populated area of south Mumbai is becoming a playground for skyscrapers. One of them is the Sky tower, which is being built by the renowned developer Indiabulls. Doka India is supplying an automatic climbing platform SCP for the central core walls and shear walls with Framax Xlife as wall formwork.

Sky Tower Mumbai
Towering over southern Mumbai, the Sky tower is one of the most prestigious projects of developer India bulls.
Sky project situated in a world class financial district and branded luxury residential development on approximately 20 acres of prime property in the downtown Mumbai. The approximately 8 million sqft project is master planned to creatively integrate the existing Office development with luxury residential towers, making them one of the most iconic and visually arresting structures in the city.

The Sky tower is 257m high, with 2 basements, 11 parking floor, 2 clubs, 2 transfers and 41 Residential/Refuge/Service. The main structural form consists of a reinforced concrete peripheral frame / shear walls with central core walls. The tower is having two transfer floors due to the different layout of parking and residential floors. Outriggers beams and walls have been provided at refuge levels, to connect the outer frame and central core, to improve the lateral stiffness. The core wall and staircase wall thickness is 600mm. The core walls are typically 6 linked through series of 900 - 1300 mm deep RC link beams. The link beam width typically matches with the adjacent core wall thickness. The heavily dense reinforcement does not allow the use of normal concrete. Self- compacting concrete (SCC) is therefore used for the construction.
The facts
Jobsite: Sky Tower
Location: Mumbai, India
Customer: Indiabulls
Building Height: 257 m
Number of Storeys: 58
Construction Time: 48 months
Use: Luxury residential building
Products in Use: Platform SCP, Framed formwork Framax Xlife

Space restraints solved

Automatic Climbing Platform
A great place to work: Doka’s automatic climbing platform SCP protects circumferentially, providing a safe working place and efficient formwork operations.
Existing residential towers and functional offices pose constraints on working hours, logistics and scheduling of construction activities. Moreover, the space constraints as well as safety in height were major issues. Doka India therefore proposed the self-climbing platform SCP to reduce the construction time by taking the core construction out of the critical path. Based on the core geometry and predetermined construction sequence, the compact platform achieves a weekly cycle per floor, providing sufficient space to stack material on the platform.

Indiabulls benefits also from the assurance and reliability, maximum safety, time efficiency of fast assembly, and full technical support from engineering staff round the clock. The formwork inside the platform consists of 480 m2 of Framax Xlife-panels, which stand out for their high number of re-use cycles and smooth concrete surfaces.

The site crew is quite enthusiastic about the safe platform SCP, which helps eliminating the fear of heights, making life much easier for the workers and protecting man and objects from falling down. With the platform, the complete core zone climbs ahead of the following storey floors. “De-linking” the different building components in this way speeds up work and improves productivity.

The solution

To assure a fast and safe construction progress and to solve the problem of space constraint, Doka India provided an automatic climbing solution consisting of the platform SCP and Framax Xlife-panels. The platform provides a safe working place and allows material and the concrete placing boom to be lifted together without the need for a crane.
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