Phoenix— The Post-Tensioning Institute (PTI), a non-profit organization for the advancement of post-tensioned, pre-stressed concrete design and construction, has announced the recipients of their 2008 awards competition.
In the Bridges category, HNTB received an Award of Merit for the Wichita Riverfront Pedestrian Bridge in Wichita, KS. The project included plans for two cable-stay bridges to increase the area's cycle network and pedestrian footpath access. The 322-foot bridge over the Arkansas River and the 242-foot bridge over the Little Arkansas River feature cable-stayed superstructures with match-cast segmental concrete box girders and a reinforced concrete river pier shape to blend with the aesthetic superstructure features.
Other project team members included contractor Dondlinger & Sons Inc., VSL (post-tensioning supplier) and Law/Kingdon (landscape architect).
In the Industrial/Special Applications category, post-tensioning supplier VSL received an award of Excellence for the Holcim Plant in St. Genevieve County, MO. Consisting of two 151-foot-diameter, 207-foot-tall clinker silos and two cement "four-pack" silos (in which each individual silo is 79 feet in diameter and 275 feet tall), the cement plant for Holcim Inc. will be the largest of its kind in the world when completed later this year. A post-tensioned design helped considerably in reducing the amount of mild reinforcement used, and in turn aided in the labor-intensive, slip-form construction process.
Other project team members included Consultec Ltd. (engineer) and MC Industrial (contractor).