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Post-tensioned vs. pre-cast parking garages

Post-tensioned vs. pre-cast parking garages

Post-tensioned vs. pre-cast parking garages

(OP)
I have to generate a letter to a state university system comparing the advantages and disadvantages of post-tensioned cast-in-place parking garages vs. pre-cast parking garages.  The purpose of the letter is to facilitate the university in choosing one of the two systems for a new 630 space parking garage.  I need to generate the letter this weekend.  I have the following:

Precast - lesser construction cost, long term maintenance costs higher, less freedom in layout (use local precasters typical bay sizes), need for shear walls or K-walls for lateral force resisting system
Post-tensioned - more open feel, less surfaces for migratory birds to nest on, costs for crack repairs due to restraints against elastic shortening, concrete frames resist lateral forces so no walls to hide crime.

Does anyone know of a web site that makes a comparison between precast and post-tensioned parking garages?

RE: Post-tensioned vs. pre-cast parking garages

In my opinion, precast/prestressed has many advantages over post-tensioned.  The security issue concerning walls has been addressed by using openings in walls, etc.  For a resource web site use www.pci.org

Even better would be to call the PCI Technical Director at 312-786-0300.  PCI staff are very friendly, professional and helpful.

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