Longer, column-free spans are possible with post-tensioning, increasing patron visibility and creating a more attractive and user-friendly parking structure, according to Klorman Construction’s President Bill Klorman. Other advantages to post tensioned concrete are reduced structural depth, vibration control, and seismic load resistance. They are also durable and require little maintenance. When all these factors are considered, post-tensioned concrete can deliver the most design flexibility, the quickest overall construction schedule and greatest value.