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Height (z)
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Height from ground or water surface (m), maximum superstructure height plus substructure height is considered for all spans in calculation. |
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Air density
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The air density (kg/m3) r is calculated using the formula . |
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Conversion fact (k0)
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Conversion factor for recurrence interval of wind velocity design value, for spans less than 40 m we take k0=0.9 if greater or equal we take k0=1. |
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Resistance fact (k1)
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Wind load resistance factor. In normal service period, the superstructure k1 of normal solid web bridge shall be taken as | (4.3.7-4) |
| B | = | width of bridge (m) | | H | = | height of beam (m) |
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Correction fact (k2)
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Wind velocity correction factor according to height variation considered with degree class of roughness and height of gradient wind as taken from Table 4.3.7-3. |
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Topography fact (k3)
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Topography and geography condition factor, taken from Table.4.3.7-1. |
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Gust velocity fact (k5)
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Gust velocity factor, for Terrain roughness types A and B we have k5 =1.38 and for C and D k5 =1.7. |
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Wind velocity
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Basic design wind velocity in zone where the bridge is located (m/s). Can be adopted according to Appendix B and related data after being checked but not to be less than 0.7m/s; |
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Wpt
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Calculated area load of wind pressure (kN/m2) transverse to the bridge where| V | = | wind velocity | | g | = | gravitational acceleration equal to 9.81(m/s2) |
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Consider wind
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(Yes/No) defines whether the particular wind situation shall be considered or not. |
