Quality, safety and cost reduction
Since 1963, besides the climbing formwork for chimney construction, Wayss & Freytag has also been using a newly developed slip form, first only for cylindrical reinforced concrete shafts, but from the middle of the 1960ies also for conical chimneys. By using the slip form method it was possible to significantly reduce the construction times with slip forming heights of 8 m/day.
The slip form method guarantees a consistently high-quality execution. This method offers the highest possible standard of work safety in chimney construction, since there is no need to shift the formwork elements as is the case with the climbing formwork.
Chimneys and telecommunication towers to be constructed using the slip form method are calculated in the Technical Department of W&F AG with specially developed computer programmes which also take into consideration the impact of earthquake effects according to the basement response spectrum method.