| S.No. | Checkpoint | IS Requirement | Status |
|---|---|---|---|
| A. SITE INVESTIGATION SCOPE AND OBJECTIVES | |||
| A1 | Investigation objectives and scope Acceptance: Foundation design data required; design loads and depths specified; critical zones identified | Cl. 2.1 — Clear investigation goals | |
| A2 | Preliminary site assessment and hazards Acceptance: Geological maps reviewed; previous site studies reviewed; hazards identified (contamination, liquefaction, etc.) | Cl. 2.2 — Pre-investigation review | |
| A3 | Investigation phases and schedule Acceptance: Preliminary investigation plan; main investigation plan; detail investigation if needed; timeline | Cl. 2.3 — Phased approach | |
| B. BOREHOLE AND SAMPLING METHODOLOGY | |||
| B1 | Boring method selection (rotary / percussion / auger) Acceptance: Method justified for soil conditions; equipment capacity; recovery expected; depth achievable | Cl. 3.1 — Method per soil type | |
| B2 | Borehole spacing and location criteria Acceptance: Spacing rationale (site area, structure size); minimum spacing determined; access verified | Cl. 3.2 — Coverage assessment | |
| B3 | Sampling strategy (disturbed vs. undisturbed) Acceptance: Disturbed samples for index tests; undisturbed for strength; depth and frequency determined | Cl. 3.3 — Sample type selection | |
| B4 | Boring depth determination Acceptance: Depth below lowest foundation level; minimum 1.5×B (B = footing width); to bearing stratum | Cl. 3.4 — Investigation depth | |
| C. IN-SITU TESTING PROGRAM | |||
| C1 | Standard Penetration Test (SPT) execution Acceptance: SPT at 1.5 m intervals; N-values recorded; equipment standard; procedure per IS | Cl. 4.1 — SPT at intervals | |
| C2 | Cone Penetration Test (CPT) if required Acceptance: CPT locations specified; correlation with boreholes; qc and fs measurements; RQD assessment | Cl. 4.2 — CPT plan | |
| C3 | Permeability testing methodology Acceptance: Field or lab testing; test intervals; sample locations; drainage design input | Cl. 4.3 — Drainage assessment | |
| C4 | Rock testing (UCS, RQD) if applicable Acceptance: Core recovery tracking; RQD calculation; UCS testing planned; rock classification | Cl. 4.4 — Rock assessment | |