RQD04

RQD & Core Recovery Borehole Log

Project Information

1. Project Name 2. Borehole ID / Location 3. Drilling Method / Core Barrel Type (optional) 4. Logged By / Checked By 5. Date

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Add Core Run

Run ID / Depth Interval (e.g., 0–1.5 m) Total Core Run Length (mm) Core Piece Lengths (mm, separated by commas)

Run ID / Depth Interval	Total Run (mm)	Recovered (mm)	Recovery (%)	RQD (%)	Rock Quality

Note: RQD considers only core pieces ≥ 100 mm length as per Deere (1964) and IS 11315 (Part 11):1987.