| S.No. | Checkpoint | IS Requirement | Status |
|---|---|---|---|
| A. TEST SETUP & EQUIPMENT | |||
| A1 | Pull-out test apparatus (portable pull tester or hydraulic jack) with load cell capacity ≥5 kN Acceptance: Load cell capacity ≥5 kN; Calibrated within 12 months; Accuracy ±2% of reading | Cl. 3 — Equipment specification | OK NC NA HOLD |
| A2 | Load cell / force gauge calibrated within last 12 months per ISO/IEC 17025; certificate provided Acceptance: Valid calibration cert provided; Traceability documented; Uncertainty <±2% | Cl. 3.1 — Calibration requirement | OK NC NA HOLD |
| A3 | Pull test fixture suitable for sheet type; designed to apply tensile load perpendicular to sheet Acceptance: Fixture applies perpendicular load; Prevents sheet slipping; Load applied at fastener center | Cl. 4 — Fixture design | OK NC NA HOLD |
| B. TEST POINT SELECTION & IDENTIFICATION | |||
| B1 | Minimum 5 test points selected from installed roof (random selection, different areas) Acceptance: ≥5 test points; Randomly selected from different roof zones; Locations documented | Cl. 5 — Sample size | OK NC NA HOLD |
| B2 | Test locations marked and photographed showing fastener location, test apparatus, and reference Acceptance: Locations marked clearly; Photos taken pre and post-test; Coordinates recorded if applicable | Cl. 5.1 — Documentation | OK NC NA HOLD |
| C. PULL-OUT TEST EXECUTION | |||
| C1 | Pull apparatus aligned perpendicular to roof sheet surface; load applied gradually at constant rate (5 kN/min typical) Acceptance: Load rate 5±1 kN/min; Load applied smoothly; No jerking or sudden application | Cl. 6 — Load application rate | OK NC NA HOLD |
| C2 | Load increased until fastener pull-out failure occurs; maximum load recorded and noted Acceptance: Load increased to failure; Peak load recorded; Failure observed (washering, slip, pull-out) | Cl. 6.1 — Failure criterion | OK NC NA HOLD |
| C3 | Pull-out load for each test point recorded; mode of failure documented (pull-out vs. sheet tear vs. fastener bend) Acceptance: Load value recorded in kN; Failure mode noted; Visual observation documented | Cl. 6.2 — Result recording | OK NC NA HOLD |