Bridge Bearing Pads: STEEL_REINFORCED
Elastomeric and other bridge bearing pad design properties per AASHTO LRFD Section 14.7 — plain elastomeric, steel-reinforced, PTFE sliding, disc, and pot bearings with shear modulus, compressive stress limits, and creep factors
| bearing type | durometer | bulk modulus ksi (ksi) | compressive stress limit ksi (ksi) | creep factor (dimensionless) | design method | max shear deformation ratio (dimensionless) | max total compressive stress ksi (ksi) | notes | shear modulus MPa (MPa) | shear modulus ksi (ksi) | temp range F |
|---|---|---|---|---|---|---|---|---|---|---|---|
| STEEL_REINFORCED | 50 | 290 | 1.25 | 0.25 | Method B | 0.5 | 1.75 | Steel-reinforced laminated bearings; higher compressive capacity; Method B requires specified G | 0.655 | 0.095 | -20 to 130 |
| STEEL_REINFORCED | 60 | 290 | 1.25 | 0.35 | Method B | 0.5 | 1.75 | Steel-reinforced laminated bearings; standard design; G=0.130 ksi at 60 durometer | 0.896 | 0.13 | -20 to 130 |
| STEEL_REINFORCED | 70 | 290 | 1.25 | 0.45 | Method B | 0.5 | 1.75 | Steel-reinforced laminated bearings; stiffer elastomer | 1.379 | 0.2 | -20 to 130 |
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