CCL Scandinavia was approached by the main contractor, NCC Construction Norway AB to supply the post-tensioning materials and carry out the installation of CCL XM-50 and XM-60 tendons in lengths of 12-192 metres. In total the company installed 305 tonnes of 15.7 mm strand.

CCL provided the design of the post-tensioned flat slabs for this exciting project, which has a total area of 16,000 m2. It comprises two structures, a 4-storey building and a 6-storey building, each with two basement levels. A glass roof links these new buildings with existing structures.

SigmaSlab® was the chosen solution because of the reduction in traditional reinforcement, the reduced cost due to less labor on site, and the lowering of the CO2 footprint of the project. The slab over the basement was designed as a reinforced concrete (RC) + post-tensioned (PT) slab. The six slabs above have been designed as 250 mm (10 in) thick elevated SigmaSlab®. The slabs span between 7.2 m (24 ft) and 9.6 m (32 ft) and elevators and stairwells were executed using the slipform construction method.

CCL delivered 3,600 unbonded post-tensioning strands 116,500 kg (256,000 lb) for one of Trondheims tallest buildings where 11 floors have been constructed using SigmaSlab® technology with CCL’s post-tensioning (PT) XU/XU2 system and Dramix® steel fiber reinforcement.