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With some post-tension systems, the installer is required to strip the plastic-sheathing in order to install the intermediate anchors at the construction joints. One issue is how to protect the exposed strand until the second pour is made (pictured below – Pour #1 on left and Pour #2 on right). Exposed strand at construction . . . → Read More: Protecting exposed strand at Construction Joints PC Strand is a high-strength steel cable used in Post-Tensioned concrete. This video shows the PC Strand prior to the plastic extrusion process (unbonded PT). ____________________________________________ Copyright © 2011 by AMSYSCO, Inc. All rights reserved. . . . → Read More: Video: Un-extruded PC Strand The friction-loss calculations are important submittals for post-tensioning tendons. The calculations determine what the tendon’s final force is after short-term and long-term friction losses. The key input parameters for “Long-Term Losses” are as follows: Post-Tensioning System (Unbonded or Bonded) Type of Strand (usually Low-Lax) Ultimate Strength of Strand (usually 270 ksi) Modulus of Elasticity of . . . → Read More: Post Tension Friction-Loss Calculations This is a historical timeline of anti-dumping associated with PC Strand. . . . → Read More: Historical Timeline of Anti-Dumping with Prestressed Concrete Strand |
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