New Jersey · answered by Verika · verified against sources
What are the rules for placing concrete in cold weather on New Jersey DOT projects?
Do not place concrete when ambient temperature is below 40°F unless surfaces in contact are preheated to 50–80°F and access is provided for measuring in-place concrete temperature. Use insulated forms, blankets, or heating enclosures to maintain concrete temperature between 60–160°F for 5 days post-placement. If temperature falls below 60°F within 5 days, extend protective measures for an additional 5 days. If temperature drops below 32°F or rises above 180°F, remove and replace concrete. Submit a cold weather concreting plan 30 days before placement [2,4,6].
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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.