Concrete Knowledge Center - ACI 318-05 Q&A

 
  Consensus Documents
      Technical Committee Documents (Bookstore)
      Educational Committee Documents:
         Materials for Concrete Construction
         Designing Concrete Structures
         Repair Application Procedures
      ACI Concrete Terminology
      ACI White Paper (Responsibilities Paper)
      Periodic Update of Ch. 12 in ACI 522R-10
 
 
 
  Individually Authored Products
      ACI Concrete Specification Center (new!)
      Design Case Studies (member only)
 
  ACI 318-05 Q&A (member only)
      Concrete Aesthetics Newsletters
      Design Tools
      Technical Questions
      Resources from Concrete International
 
 
  Reference Information
      ACI 318R Commentary References (member only)
      Database Referenced in ACI 408R-03
      Photos of Notable Concrete
      Troubleshooting Surface Imperfections
      Links to External Resources:
         Sustainability
         Building Information Modeling
         Research Reports Endorsed by CRC
         Virtual Laboratory
         Concrete Related Associations
         Journals, Magazines, Newsletters, Periodicals
         Concrete International Concrete Product Guide
 
         
        Background information is provided in a Q&A format for selected ACI 318-05 provisions.
         
        ACI 318-05 Chapter           Topic Links (ACI Membership Required)
       
        4 — Durability Requirements       •   Chloride Restriction
                  •   Calcium Chloride Admixtures
       
        7 — Details of Reinforcement       •   Reinforcing A Circular Column
                  •   Number of Needed Reinforcing Bar Ties
                  •   Minimum Average Compressive Stress for Prestressed Concrete
                  •   Vapor Retarders and Depth of Cover
                  •   Is It Permissible To Twist Embedded Bars?
       
        9 — Strength and Serviceability Requirements       •   Live Load Reduction
                  •   Minimum Permissible Thickness
                  •   Nonprestressed, Deformed Reinforcing Bars
       
        11 — Shear and Torsion       •   Checking Punching Shear Strength by the ACI Code
                    •   Calculating Shear Strength
                    •   Upper Limits on Shear-Friction Capacity
                    •   Torsion Calculations for Hollow Sections
       
        12 — Development and Splices of Reinforcement       •   Splice Length Anomaly
                  •   Noncontact Splices for Column Bars
                  •   Calculating Development Length of Bundled Bars
                  •   Development Length Calculation
       
        13 — Two-Way Slab Systems       •   Dealing With Concentrated Loads
       
        14 — Walls       •   When Does A Column Become A Wall?
       
        17 — Composite Concrete Flexural Members       •   Composite Concrete Flexural Members
       
        18 — Prestressed Concrete       •   Effective Moment of Inertia of Class U Prestressed Beams
       
        21 — Earthquake-Resistant Structures       •   Special Concrete Shearwall Boundary Element Reinforcement
                  •   Ties and Splices
       
        Appendix A—Strut-and-Tie Models       •   Strut-and-Tie method with Shear and Torsion
                         
         
       
Ask a question (Member Benefit)
       
ACI Members only are invited to submit questions concerning concrete design and construction.