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Maximum Economic Span by Bridge Type (metres). Maximum Span: Beam 150, Truss 450, Arch 600, Cable-stayed 1100, Suspension 2000.
| Beam | Truss | Arch | Cable-stayed | Suspension | |
|---|---|---|---|---|---|
| Maximum Span | 150 | 450 | 600 | 1,100 | 2,000 |
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Bridge Deck Oscillation Amplitude under Wind Speeds (millimetres). Unmodified Deck: 20 km/h 5, 40 km/h 12, 60 km/h 28, 80 km/h 65, 100 km/h 140, 120 km/h 260. Aerodynamic Fairing: 20 km/h 2, 40 km/h 5, 60 km/h 10, 80 km/h 22, 100 km/h 45, 120 km/h 80.
| 20 km/h | 40 km/h | 60 km/h | 80 km/h | 100 km/h | 120 km/h | |
|---|---|---|---|---|---|---|
| Unmodified Deck | 5 | 12 | 28 | 65 | 140 | 260 |
| Aerodynamic Fairing | 2 | 5 | 10 | 22 | 45 | 80 |
Balanced Cantilever Bridge Construction Sequence. Stage 1: Construct foundation and central pier. Stage 2: Erect pier table and formwork travellers. Stage 3: Cast matching segments symmetrically outward. Stage 4: Tension internal post-tensioning cables. Stage 5: Advance travellers to next segment. Stage 6: Cast closure segment at mid-span.
Performance Characteristics of Bridge Girder Materials. Columns: Material, Density (kg/m3), Tensile Strength (MPa), Estimated Lifespan (Years). Structural Steel, 7850, 450, 100. Prestressed Concrete, 2450, 40, 80. Carbon Fibre Composite, 1600, 1500, 120. Glulam Timber, 550, 30, 50.
| Material | Density (kg/m3) | Tensile Strength (MPa) | Estimated Lifespan (Years) |
|---|---|---|---|
| Structural Steel | 7850 | 450 | 100 |
| Prestressed Concrete | 2450 | 40 | 80 |
| Carbon Fibre Composite | 1600 | 1500 | 120 |
| Glulam Timber | 550 | 30 | 50 |
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