- ACI International Online [IA][Direct] -
Contact numbers for staff, information on conventions, seminars, technical committees, membership, periodicals, and publications.
- Indiana Ready Mixed Concrete Association [IA][Direct] -
Supplies information about the design, specifications, placement, finishing and problem solving using ready mixed concrete.
- National Precast Concrete Association [IA][Direct] -
Represents manufacturers of precast concrete products.
- Portland Cement Association [IA][Direct] -
National association representing all sectors of the cement industry, including contracting, manufacturing, distribution, training, and government relations.
- Precast Concrete Institute [IA][Direct] -
International membership organization dedicated to fostering greater understanding and use of precast and prestressed concrete.
- Tilt-Up Concrete Association [IA][Direct] -
TCA represents builders, engineers, architects, and suppliers.
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