Golden Ears Bridge, Vancouver, British Columbia
The four towers consist of two pylons each which change in geometric shape as they raise from the ground. The lower part of the tower consists of two legs which range from 17' (5.20 m) width, 14' (4.10 m) height and 5' (1.40) thick. These two legs are angeld inward at a rate of 1.2 degrees, requiring a precise and flexible forming system such as ACS combined with the VARIO Wall formwork system. For the upper pylons, a solid structure consisting of 22' (6.80 m) width, 14' (4 m) height and 9' (2.80 m) thick. These upper pylons are also angeld inward, however at a different rate of 0.21 degrees. Eight ACS-R brackets were required for the lower pylons, while only four ACS-R brackets were needed for the upper pylons.