Alabama · answered by Verika · verified against sources
What are the rules for placing concrete in cold weather on Alabama DOT projects?
Cold weather concrete placement on Alabama DOT projects requires written Engineer approval if ambient air temperature is below 40°F (5°C). Concrete must be kept above 50°F (10°C) for 72 hours post-placement and above 32°F (0°C) for an additional 72 hours. Aggregates/mixing water must be heated to maintain concrete temperature above 50°F (10°C) until initial set, with no material heated above 150°F (65°C) or from frozen stockpiles. Ice/snow must be removed, and no salts/chemicals can be used to prevent freezing. Contractor assumes all risk/costs for cold weather operations.
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Verika provides information with citations to help you find and understand the rules that apply to your work. It is not a substitute for professional engineering or legal judgment. Answer generated 2026-08-28; always confirm against the cited source for your project.