Reinforcement Congestion in Cast-in-Place Concrete

International Concrete Abstracts Portal

The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

  


Title: Reinforcement Congestion in Cast-in-Place Concrete

Author(s): James Klinger, Oscar R. Antommattei, Aron Csont, Trevor Prater, Michael Damme, and Bruce A. Suprenant

Publication: Concrete International

Volume: 44

Issue: 12

Appears on pages(s): 49-59

Keywords: code, constructability, contractor, consolidation

DOI: 10.14359/51738355

Date: 12/1/2022

Abstract:
Although the Code requires the engineer to design for adequate concrete placement, it offers very little guidance for congested reinforcement. This article provides information on design and detailing prerequisites, reinforcement congestion economics, allowance recommendations related to congestion of reinforcement, and proposed Code and Commentary language with respect to constructability.

Related References:

1. ACI Committee 318, “Commentary on Building Code Requirements for Reinforced Concrete (ACI 318-83),” ACI 318R-83, American Concrete Institute, Farmington Hills, MI, 1983, 155 pp.

2. ACI Committee 318, “Building Code Requirements for Structural Concrete (ACI 318-99) and Commentary (ACI 318R-99),” American Concrete Institute, Farmington Hills, MI, 1999, 391 pp.

3. ACI Committee 318, “Building Code Requirements for Structural Concrete (ACI 318-19) and Commentary (ACI 318R-19),” American Concrete Institute, Farmington Hills, MI, 2019, 623 pp.

4. ACI Committee 318, “Commentary on Building Code Requirements for Reinforced Concrete (ACI 318-77),” ACI 318R-77, American Concrete Institute, Farmington Hills, MI, 1977, 155 pp.

5. ACI Committee 309, “Recommended Practice for Consolidation of Concrete (ACI 309-72),” American Concrete Institute, Farmington Hills, MI, 1972, 40 pp.

6. ACI Committee 309, “Guide for Consolidation of Concrete (ACI 309R-05),” American Concrete Institute, Farmington Hills, MI, 2005, 36 pp.

7. ACI Committee 237, “Self-Consolidating Concrete (ACI 237R-07) (Reapproved 2019),” American Concrete Institute, Farmington Hills, MI, 2007, 30 pp.

8. ACI Committee 315, “Guide to Presenting Reinforcing Steel Design Details (ACI 315R-18),” American Concrete Institute, Farmington Hills, MI, 2018, 50 pp.

9. Malik, J.B., “Designing to Minimum Concrete Dimensions,” Concrete International, V. 29, No. 7, July 2007, pp. 44-47.

10. “Design Guide for Economical Reinforced Concrete Structures,” first edition, 10-DG-STRUCTURES, Concrete Reinforcing Steel Institute, Schaumburg, IL, 2016, 88 pp.

11. MNL-17(21), “ACI Reinforced Design Handbook,” V. 3: Design Aids, American Concrete Institute, Farmington Hills, MI, 2021, 99 pp.

12. ACI Committee 304, “Guide for Measuring, Mixing, Transporting, and Placing Concrete (ACI 304R-00),” American Concrete Institute, Farmington Hills, MI, 2000, 41 pp.

13. ACI Committee 304, “Guide to Placing Concrete by Pumping Methods (ACI 304.2R-17),” American Concrete Institute, Farmington Hills, MI, 2017, 20 pp.

14. “The Effects of Free Fall Concrete in Drilled Shafts,” ADSC: The International Association of Foundation Drilling, Southlake, TX, 1994, 106 pp.

15. Roberts, D., “Congested Reinforcement: Effects on Placing and Compacting Concrete,” Concrete Advice No. 04, The Concrete Society, Surrey, U.K., 2016, 2 pp.

16. Wight, J.K., and MacGregor, J.G., Reinforced Concrete—Mechanics & Design, fifth edition, Prentice Hall, Inc., Hoboken, NJ, 2009, 1112 pp.

17. Roberts, D., “Congested Reinforcement: Effects on Placing and Compacting Concrete,” Concrete Advice No. 04, The Concrete Society, Surrey, U.K., 2003, 2 pp.

18. ACI Committee 318, “Building Regulations for Reinforced Concrete (ACI 318-41),” American Concrete Institute, Farmington Hills, MI, 1941, 63 pp.

19. ACI Committee 318, “Code Requirements for Reinforced Concrete (ACI 318-77),” American Concrete Institute, Farmington Hills, MI, 1977, 103 pp.

20. ACI Committee 212, “Report on Chemical Admixtures for Concrete (ACI 212.3R-16),” American Concrete Institute, Farmington Hills, MI, 2016, 76 pp.

21. Shaefer, S.E., “Coordinated and Complete Construction Documents—CASE’s Answer to ‘Botched Plans,’” STRUCTURE magazine, Feb. 2004, pp. 27-29.

22. Munshi, J., and Saini, J., “Reinforcement in Nuclear Construction - How Much is Too Much!,” Proceedings of 25th International Conference on Structural Mechanics in Reactor Technology 2019 (SMiRT-25), Charlotte, NC, Aug. 4-9, 2019, V. 5, pp. 3635-3640.

23. Wyllie, L.A. Jr., and LaPlante, R.W., “The Designer’s Responsibility for Rebar Design,” The Structural Bulletin Series, Number 1, Concrete Reinforcing Steel Institute (CRSI), Schaumburg, IL, 2003 (Revised 2008), 16 pp.




  

Edit Module Settings to define Page Content Reviewer