TW1: Here the cable is drawn vertically from a drum as a drag cable via the load platform. The load platform pulls  
                                      the cable along as it moves up. During the downwards motion the cable returns to the drum automatically. Our  
                                      special versions are used at heights of up to about 150 meter. 
                                       
                                      TW2: For greater heights, a so-called carriage version is employed, in which the cable is fed at the center of the  
                                      tower, i.e. half the way up. 
                                       
                                      TW3: Here the cable is guided via a spring-loaded drum. These vertical construction lifts are used during new  
                                      construction and renovation work on high buildings. The rack lattice elements are fastened at intervals to the  
                                      exterior facade. 
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