Title:
Concrete Q&A: Bundled No. 14 and No. 18 Bars and Column Ties in Two-way Slabs with Drop Panels
Author(s):
Publication:
Concrete International
Volume:
45
Issue:
2
Appears on pages(s):
55-56
Keywords:
bundle, design, reinforcement, hoop
DOI:
10.14359/51738528
Date:
2/1/2023
Abstract:
The first part of this two-part Q&A focuses on provisions for using bundled No. 11 bars in beams and bundled No. 14 and No. 18 bars in drilled shafts. The second part discusses requirements on extending column ties into the footings and drop panels.
Related References:
1. ACI Committee 318, “Building Code Requirements for Structural Concrete (ACI 318-14) and Commentary (ACI 318R-14),” American Concrete Institute, Farmington Hills, MI, 2014, 519 pp.
2. “AASHTO LRFD Bridge Design Specifications,” sixth edition, American Association of State Highway and Transportation Officials, Washington, DC, 2012, 1661 pp.
3. “Concrete Q&A: Calculating Development Length of Bundled Bars,” Concrete International, V. 27, No. 4, Apr. 2005, p. 96.
4. ACI Committee 318, “Building Code Requirements for Structural Concrete (ACI 318-19) and Commentary (ACI 318R-19) (Reapproved 2022),” American Concrete Institute, Farmington Hills, MI, 2019, 623 pp.
5. “ACI MNL-17(21): ACI Reinforced Concrete Design Handbook,” V. 1 and 2, American Concrete Institute, Farmington Hills, MI, 2021.
6. ACI 318 PLUS, https://www.concrete.org/publications/aci318plus.aspx.