| S.No. | Checkpoint | IS Requirement | Status |
|---|---|---|---|
| A. SMOKE TEST PROCEDURE | |||
| A1 | Smoke introduced at lower manhole via pipe (5-10 minute duration); smoke fills pipe section Acceptance: Smoke fills section, visible at vents and exits | Cl. 11.1 — Smoke application | |
| A2 | Visual inspection for smoke escaping from joints or cracks in drainage line (above ground or underground marks) Acceptance: No smoke escaping from pipe run, zero defects identified | Cl. 11.2 — Leak detection | |
| B. RESULTS & VERDICT | |||
| B1 | PASS: Zero smoke escape from pipe joints; indicates tight system with no defects Acceptance: No smoke visible from any location, test confirms watertightness | Cl. 11.3 — Pass | |
| B2 | FAIL: If smoke escapes at any point, location marked and repaired Acceptance: Defect location photographed, joint sealed or pipe replaced, re-tested | Cl. 11.4 — Failure response | |