AMSYSCO Post Tension Blog

• read "Acceptance Standards for Post-Tensioning Systems" (Post-Tensioning Institute 1998) #
• recommends that Ironworkers read "Field Procedures for Unbonded Single Strand Tendons" by Post-Tensioning Institute. #
• started post-tensioning work on California St. Garage for IUPUI. #
• recommends reading "Specification for 7-Wire Prestressed Steel Strand for Barrier Cable Applications" (Post-Tensioning Institute) #
• Prestressing steel strand info for post tensioning. http://www.amsyscoinc.com/blog/2010/01/29/material-properties-of-post-tension-strands/ #
• Post-Tensioning Tendon Grouting (FHA) http://bit.ly/boFaXX #
• "Aqua" wins Emporis Skyscraper of the Year 2009 (post-tensioning by Amsysco) http://bit.ly/drM9JQ Congrats to… http://bit.ly/aED8Qo #
• Books about Post Tensioned Concrete by Post-Tensioning Institute http://www.amsyscoinc.com/blog/recommended-reading/ #
• Certification for Post Tensioned Concrete by Post-Tensioning Institute http://bit.ly/c0XEYH #
• Friend emailed this 'Tall Building Guide' (Structure Magazine, June 2008) http://www.structuremag.org/archives/2009-6/TallBuildingGuide-June09.pdf #

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• 'Best of The Web Blog' lists Amsysco's Post-Tension Blog!!! http://blogs.botw.org/Business/Construction/ #
• Recommends reading 'Specification for Unbonded Single-Strand Tendons' by Post-Tensioning Institute. #
• The new Minnesota Twins Ballpark ('Target Field') has over 140 miles of post-tensioning cables in it. http://bit.ly/18NvqV #
• re-read "Structural Integrity of Buildings Constructed with Unbonded Tendons" by Clifford Freyermuth (ACI 1989). #
• re-read "Practice of Partial Prestressing for Continuous Post-Tensioned Structures in North America" by Clifford Freyermuth (PTI/PCI 1985). #
• read "Force Distribution in Post-Tensioned Unbonded Tendons Under Repeated Loadings" by Prof. Ned Burns (Univ. Texas / PTI 1989) #

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I am proud to announce that the “AMSYSCO Post Tension Blog” has been listed on the ‘Best of the Web Blogs‘ for Construction-related blogs.

Our blog discusses Post-Tensioned Concrete and news about AMSYSCO, Inc.  Our target audience is Architects, Structural Engineers, General Contractors, Concrete Contractors, Ironworkers and anyone interested in construction.

- Neel Khosa, AMSYSCO, Inc.
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• Had our 1000th view on YouTube video – How to make a Post Tensioning Tendon http://bit.ly/9l8Fp3 #
• Read Ken's Mizamuddin's article in SEAOI Bulletin that Post-Tensioning can reduce/eliminate control joints in slab on grade concrete floors #
• read "Restraint Cracks & their Mitigation in Unbonded Post-Tensioned Building Structures" by Bjian Aalami & Florian Barth (PTI 1988) #
• blogging on Post-Tensioning Institute's Certified Plant http://bit.ly/aOcTtr #

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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 rating well above the industry average.

The PTI inspection is unannounced twice a year by an independent certifying agency.  The following is an excerpt from the Post-Tensioning Institute’s website regarding the program: 

Launched in 1989, the first program, Unbonded Single Strand Tendon Fabrication Facilities, is for facilities that fabricate unbonded single strand tendons.  Since its inception, participation in the program has grown steadily.  63 plants are certified, which represents approximately 95% of the industry’s production.

An abridged outline for the Manual for Certification of Plants Producing Unbonded Single Strand Tendons(5th Edition, May 2007, Post-Tensioning Institute) is located below for the grading criteria.

2.0 Post-Tensioning Institute Certification Program Criteria

2.1 General

2.2 Prestressing Steel

2.3 Anchorages and Couplers

2.4 Sheathing

2.5 Post-Tension Coating

2.6 Fabricating Process

2.7 Storage and Shipping

2.8 Record Keeping

2.9 Stressing Equipment

2.10 Quality Control Program

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