| S.No. | Field / Checkpoint | Reference | Status |
|---|---|---|---|
| A. TEST SETUP | |||
| A1 | BH no. + depth (m) + soil type encountered Acceptance: Cross-referenced | Per bore log | OK NC NA |
| A2 | Hammer — 63.5 kg + free fall 760mm (per IS 2131) Acceptance: Per device | Per code | OK NC NA |
| A3 | Split spoon sampler — 50mm OD, 35mm ID Acceptance: Per code | Per IS 2131 | OK NC NA |
| B. PENETRATION TEST | |||
| B1 | First 150mm penetration — blow count (seating drive) Acceptance: Logged separately | Disregarded | OK NC NA |
| B2 | Next 150mm — blow count (N1) Acceptance: Per IS 2131 | Recorded | OK NC NA |
| B3 | Final 150mm — blow count (N2) Acceptance: Per code | Recorded | OK NC NA |
| B4 | N-value = N1 + N2 (for 30cm penetration) Acceptance: Sum | Per IS 2131 | OK NC NA |
| C. REFUSAL + INTERPRETATION | |||
| C1 | Refusal criteria — > 50 blows for any 75mm penetration Acceptance: Per code | Per IS 2131 | OK NC NA |
| C2 | Soil density / consistency from N-value (loose / medium / dense) Acceptance: Per classification | IS 1498 + Terzaghi | OK NC NA |
| C3 | Correction for overburden + dilatancy (for fine soils below water table) Acceptance: Computed | Per IS 2131 + design | OK NC NA |