Links
You may find the following organisations helpful in your investigations on precast comcrete technology and concrete design in general.
www.concreteinstitute.com.au
Prestressed Concrete Institute
www.pci.org
Canadian Precast Concrete Institute
www.cpci.ca
American Concrete Institute
www.aci-int.org
www.precastnz.org.nz
FIB
www.fib-international.org
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Cement Concrete & Aggregates Australia
http://www.ccaa.com.au
www.precast.org