SC Grading Practice Questions - South Carolina Grading Contractor Examination Exam

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Unless field-cured cylinders show required strength, SCDOT does not allow backfill to full height against a new masonry abutment, wingwall, retaining wall, or box culvert until the concrete has cured at least:

24 hours 3 days 14 days 7 days

Correct Answer:

14 days

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