Peri has developed a new self-climbing formwork with a very high load-bearing capacity for high-rise building cores with medium to large dimensions.

Called the ACS Core 400, the innovative system was launched at bauma, the world’s largest construction equipment and vehicles show, held in Munich, Germany, in April this year.

“Solid, divided building cores with lobby slabs are a feature of the customary structure in high-rise buildings. The elaborate formwork required is significantly simplified with the newly developed Peri ACS Core 400 self-climbing formwork,” comments a spokesman for the Germany-based formwork and scaffolding systems manufacturer.

The new type of climbing hydraulics brings big advantages through the higher speed and synchronous stroke. The highlight of the system is that the continuous, simultaneous climbing of multiple cores prevents the formation of any leading edges. This considerably increases the level of safety during the execution, the spokesman says.

Elaborating on the formwork, he says: “The specially developed climbing hydraulics function by means of long-stroke cylinders with a lifting capacity of 40 tonnes in each case. With a lifting height of 5.1 m, the formwork can be moved in a single step without requiring intermediate strokes, also for large storey heights. 

“Thanks to the ample lifting capacity, large placing booms can also be climbed together with the working and climbing brackets and must not be moved separately. As a result, concreting operations are significantly accelerated while additional working steps are eliminated. In addition, the lifting cylinders are synchronised; even different loads, for example, due to the component geometries, can be compensated.”

The formwork itself is suitable for medium- and large-dimensioned building cores, where slabs and access levels are simultaneously concreted in one single operation. As an option, the internal formwork can be equipped with a hydraulic striking mechanism. The external formwork can be retracted a long distance thus creating optimum access for the installation of the reinforcement. The very stable working and storage areas on the inside and outside are also generously dimensioned, according to the spokesman.

Short climbing cycles without intermediate strokes, simultaneous climbing of the placing boom and highly accessible working areas accelerate the work on the construction site. As a rule, three-day cycles for each floor is possible.

Furthermore, the ACS Core 400 requires only a minimum of lost parts, and the climbing anchor for the working and climbing brackets can be reused. As is customary at Peri, most components of the climbing formwork are available from the rental parks.