VSL supplied the materials and supervised the complete post-tensioning works as well as provided 504 anchorage sets of type Ec 6–31, 600t of strand and 17,000m of galvanised ducting for the Trunk Spine Bridge in Dubai. Post-tensioning plays a significant role allowing the design to be flexible and to accommodate longer spans.
Free Zone flooring
VSL has provided all post-tensioning materials and equipment as well as specialist supervision for more than 80,000m² of slabs in two 100m-high towers at the Downtown Jebel Ali development in Dubai. The 27 floors and roof of each building have a post-tensioned floor system, with tendons up to 70m long. The slab thickness varies from 220 to 300mm.
VSL Technical Centre Europe has provided support to designer EstKONZULT for 7,000m2 of new outdoor parking in the old centre of Tallinn, Estonia. A two-way unbonded VSL S6-1 system was chosen for the flat slab design. VSL CZ supplied post-tensioning works in cooperation with MAPRI Projekt.
Safeguarding the Rhone
VSL has built a new 30,000 m3 retention tank on France’s Rhône river. The main dimensions are 107.3m by 79.2m with wall heights ranging from 3m to 3.5m. Post-tensioning involved 6-7 units and PT-Plus®. 160t of post-tensioned steel were installed and the anchorages were of type EC6-7. The post-tensioning works were completed 3 weeks ahead of time.
VSL proposed the use of its Z anchorage for a 1.2km flood deviation tunnel in Thun, Switzerland which gave the benefit of continuous forces around the ring while minimising the number of stressing pockets. Another proposal that was accepted involved the use of PT-Plus® plastic ducting and monostrands to limit frictional losses.