Bridge Expansion Joints: FINGER_PLATE
Bridge expansion joint types and movement capacities — compression seal, strip seal, modular, finger plate, silicone sealant — with total movement range, opening limits, waterproofing, and applicable span ranges
| joint type | size rating | install temp range F | max opening in (in) | min opening in (in) | notes | span range ft | total movement in (in) | typical cost | water tight |
|---|---|---|---|---|---|---|---|---|---|
| FINGER_PLATE | FP-3 | -30 to 130 | 3 | 0 | Interlocking steel finger plates; no water seal; drainage trough required below; movement 3 in | 150 to 400 | 3 | Moderate | No |
| FINGER_PLATE | FP-6 | -30 to 130 | 6 | 0 | Interlocking steel finger plates; movement up to 6 in; used where watertightness not critical | 250 to 600 | 6 | Moderate | No |
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