Title:
Concrete Q&A: Standing Water and Concrete Placement
Author(s):
Bruce A. Suprenant
Publication:
Concrete International
Volume:
44
Issue:
6
Appears on pages(s):
76
Keywords:
footing, tremie, form, exit
DOI:
10.14359/51734846
Date:
6/1/2022
Abstract:
A 5 ft (1.5 m) thick foundation mat slab has been prepared for concrete placement. Reinforcing steel was installed over a 3 in. (76 mm) thick mud (or working) slab with an area of approximately 25,000 ft2 (2320 m2) finished flat (that is, no slopes or contours). There are puddles of standing rainwater deposited yesterday on top of the mud slab in random locations that range in depth up to 1/2 in. (13 mm). Are there any ACI requirements for placing concrete in such conditions?
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. ACI Committee 318, “Building Code Requirements for Structural Concrete (ACI 318-19) and Commentary (ACI 318R-19),” American Concrete Institute, Farmington Hills, MI, 2019, 624 pp.
3. ACI Committee 332, “Guide to Residential Concrete Construction (ACI 332.1R-18),” American Concrete Institute, Farmington Hills, MI, 2018, 61 pp.
4. ACI Committee 332, “Code Requirements for Residential Concrete (ACI 332-20) and Commentary,” American Concrete Institute, Farmington Hills, MI, 2020, 74 pp.
5. Baty II, J.R., “Standing Water in Prepared Footings: A Problem or a Precaution?” Concrete Contractor, May 6, 2020, https://tinyurl.com/2u2mf8b3.
6. Khayat, K.H.; Gerwick, Jr., B.C.; and Hester, W.T., “Self-Leveling and Stiff Consolidated Concretes for Casting High-Performance Flat Slabs in Water,” Concrete International, V. 15, No. 8, Aug. 1993, pp. 36-43.
7. Khayat, K.H.; Gerwick, Jr., B.C.; and Hester, W.T. “Concrete Placement with Inclined Tremie for Small Underwater Repairs,” Concrete International, V. 15, No. 4, Apr. 1993, pp. 49-56.