| S.No. | Checkpoint | IS Requirement | Status |
|---|---|---|---|
| A. BEARING INSTALLATION AND POSITIONING | |||
| A1 | Bearing type and design match Acceptance: Type (elastomer/pot/rocker) matches design; dimensions verified; elastomer properties certified | Cl. 3.1 — Bearing type per design | OK NC NA HOLD |
| A2 | Bearing size and load capacity Acceptance: Overall dimensions ±10 mm; bearing area adequate; load capacity ≥ design load | Cl. 3.2 — Bearing dimensions per design | OK NC NA HOLD |
| A3 | Bearing positioning and centering Acceptance: Bearing centered; ±15 mm from design location; no overhang; fully supported | Cl. 3.3 — Bearing centered on seat | OK NC NA HOLD |
| A4 | Bearing seat condition and leveling Acceptance: Seat level ±10 mm; smooth finish; clean and free of debris; leveling mortar if required | Cl. 3.4 — Seat level and clean | OK NC NA HOLD |
| A5 | Bearing height and gap verification Acceptance: Bearing height per design; sufficient gap for thermal movement; no obstruction above | Cl. 3.5 — Gap for movement | OK NC NA HOLD |
| B. ELASTOMER BEARING INSPECTION | |||
| B1 | Elastomer material and compound verification Acceptance: Elastomer type (neoprene/natural rubber) certified; shear modulus verified; thickness ±5 mm | Cl. 4.1 — Material properties per design | OK NC NA HOLD |
| B2 | Elastomer surface condition Acceptance: No cracks, tears, or delamination; surface clean and dry; no contamination or staining | Cl. 4.2 — Surface intact and clean | OK NC NA HOLD |
| B3 | Steel reinforcement plates (if composite) Acceptance: Steel plates bonded to elastomer; no separation or bubbles; surface corrosion minimal | Cl. 4.3 — Steel plates properly bonded | OK NC NA HOLD |
| B4 | Elastomer compression and hardness Acceptance: Compression under load smooth; hardness test within specification; no excessive swelling | Cl. 4.4 — Elastomer properties acceptable | OK NC NA HOLD |
| C. POT BEARING AND ROCKER BEARING (IF APPLICABLE) | |||
| C1 | Pot bearing load capacity and components Acceptance: Piston diameter per design; seal condition intact; sliding surface clean; rated load capacity certified | Cl. 5.1 — Pot bearing components verified | OK NC NA HOLD |
| C2 | Rocker bearing pivot and movement Acceptance: Pivot pin smooth and undamaged; rocker rocks freely; bearing surfaces clean | Cl. 5.2 — Rocker pivots freely | OK NC NA HOLD |
| C3 | Bearing fastening and anchor bolts Acceptance: Bolts torqued per design; lock washers present; no vibration; re-torqued after traffic loading | Cl. 5.3 — Bolts secure bearing | OK NC NA HOLD |