Title: Designing for Construction Productivity and Safety
Author(s): Gordon H. Reigstad, Jason G. Reigstad, and Jared M. Reigstad
Publication: Concrete International
Appears on pages(s): 51-55
Keywords: design, formwork, shoring, pour strip
Volume change is a challenging aspect of reinforced concrete and post-tensioned construction. If no measures are taken to minimize restraint to shortening from columns, braced frames, moment frames, and shear walls, strains resulting from concrete shrinkage, creep, temperature, and elastic shortening associated with post-tensioning can result in high tensile stresses and significant cracking. In an elevated slab, the common solution is to use a pour strip. An innovative pour strip design based on the use of mechanical couplers is discussed.