Title:
Anchor Reinforcement for Anchor Channels
Author(s):
Christoph Mahrenholtz, Akanshu Sharma, Maciej Kucharski, Rolf Eligehausen, Neil L. Hammill, and Brian Hastings
Publication:
Concrete International
Volume:
43
Issue:
9
Appears on pages(s):
24-29
Keywords:
load, bolt, capacity, breakout
DOI:
10.14359/51734155
Date:
9/1/2021
Abstract:
Prefabricated curtain wall façade panels in high-rise buildings are often attached to the structure by anchor channels. To maximize floor space in these structures, connection points of the façade panels are moving closer to the edge, while concrete decks are becoming thinner. To overcome these challenges, an anchor channel supplemented with anchor reinforcement has been developed.
Related References:
1. Jordahl, A., “Geschlitztes hohles Bewehrungseisen für Eisenbetonbauten zur Aufnahme von Befestigungsbolzen für Lagerblöcke und desgleichen (Slotted Hollow Reinforcing Iron for Reinforced Concrete Structures for the Reception of Fastening Bolts for Bearing Blocks and the Like),” German Patent AT73670B, Kaiserliches Patentamt, Berlin, Germany, Aug. 25, 1917. (in German)
2. Eligehausen, R., and Mallée, R., Befestigungstechnik im Beton- und Mauerwerksbau (Anchorage in Concrete and Masonry Construction), first edition, Ernst & Sohn, Berlin, Germany, 2000, 380 pp. (in German)
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. ICC-ES AC232, “Acceptance Criteria for Anchor Channels in Concrete Elements,” ICC Evaluation Service, LLC, Brea, CA, 2019, 94 pp.
5. ICC-EC Evaluation Report: ESR-2854, “Jordahl Anchor Channel System in Uncracked and Cracked Concrete,” ICC Evaluation Service, LLC, Brea, CA, 2020, 31 pp.
6. Mahrenholtz, C., and Sharma, A., “Qualification and Design of Anchor Channels with Channel Bolts According to the New EN 1992-4 and ACI 318,” fib Structural Concrete, V. 21, No. 1, Feb. 2020, pp. 94-106.
7. Klingner, R.E.; Mendonca, J.A.; and Malik, J.B., “Effect of Reinforcing Details on the Shear Resistance of Anchor Bolts under Reversed Cyclic Loading,” ACI Journal, V. 79, No. 1, Jan.-Feb. 1982, pp. 3-12.
8. Fisher, J.M., “Steel Design Guide 7: Industrial Buildings—Roofs to Anchor Rods,” second edition, American Institute of Steel Construction, Inc., Chicago, IL, 2004, 98 pp.
9. Sharma, A.; Eligehausen, R.; and Asmus, J., “Experimental Investigation of Concrete Edge Failure of Multiple-Row Anchorages with Supplementary Reinforcement,” fib Structural Concrete, V. 18, No. 1, Feb. 2017, pp. 153-163.
10. Eligehausen, R., and Sharma, A., “Design of Jordahl Anchor Channels JTA Arranged Parallel and Near to an Edge with Jordahl Edge Confinement (JEC) to Take Up Shear Loads Towards the Edge According to ACI 318-14, ACI 318-19, IBC 2018 or ICR 2018 in Connection with AC232 and ESR-2854,” Evaluation Report, IEA (Ingenieurbuero Eligehausen Asmus), Stuttgart, Germany, 2021, 204 pp.