Title:
Concrete Q&A: Strength Requirements for Removal of Formwork from Concrete Slabs
Author(s):
Publication:
Concrete International
Volume:
47
Issue:
7
Appears on pages(s):
64
Keywords:
form, construction, load, mixture
DOI:
10.14359/51748941
Date:
7/1/2025
Abstract:
This month’s Q&A focuses on issues related to meeting in-place concrete strength requirements for removing forms for reinforced concrete slabs. It explains how the contractor might accelerate the construction schedule by implementing concrete mixtures with compressive strengths exceeding those specified for the project.
Related References:
1. ACI Committee 347, “Guide for Shoring/Reshoring of Concrete Multistory Buildings (ACI PRC-347.2-17),” American Concrete Institute, Farmington Hills, MI, 2017, 28 pp.
2. Johnston, D.W., SP-4: Formwork for Concrete, eighth edition, American Concrete Institute, Farmington Hills, MI, 2014, 512 pp.
3. ACI Committee 318, “Building Code for Structural Concrete—Code Requirements and Commentary (ACI CODE-318-25),” American Concrete Institute, Farmington Hills, MI, 2025, 699 pp.