Category Archives: Design Issues
Barrier Cable Systems
Barrier Strand (or Barrier Cable) is primarily used in parking structures for vehicular and/or pedestrian restraint along the ramps or perimeter. This restraint system is different from the ‘Cable Barrier’ used along highways. Barrier Cable is comprised of a 0.5 inch … Continue reading
Material Properties of Post-Tension Strands
The following is a list of basic formulas for 270 ksi, 7-wire Prestressing steel strand (per ASTM-A416) used in Post-Tensioned concrete. _______________________________ Assume 0.5″ diameter strand has cross-sectional area of 0.153 sq.in. and weight of 0.525 lbs/ft. Assume 0.6″ diameter strand … Continue reading
Unbonded Post Tensioning – Preconstruction Checklist
The following is a preconstruction checklist for General Contractors / Construction Managers that can be used for Unbonded Post Tensioning projects. It has saved AMSYSCO, Inc. and its Clients from costly errors, revisions, delays and problems. These checklist(s) are not inclusive and … Continue reading