Tag Archives: Post-Tensioning Institute
Post-Tensioning Institute : Certified Plant
AMSYSCO, Inc. is proud to enter it’s 20th year as a PTI-Certified Plant for Unbonded Post-Tensioning. AMSYSCO, Inc. has operated in one of the longest standing PTI-Certified Plants in the world – if not the longest, in good standing. Our manufacturing plant strives to have a … 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 – Protection
Lately, a lot of focus has been given to the technical aspects of unbonded post-tensioning systems. At times, however, the construction team must not forget the basic performance issues involved with post tensioning. In particular, the proper protection of unbonded post-tensioning tendons is fundamental … Continue reading