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9 Cards in this Set
- Front
- Back
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Culvert design is what percent of total road costs? |
5-10 |
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Define peak flow |
The max volume of H20 in a river over time period |
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How is peak flow described |
-in terms of rainfall event frequency |
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Q2 is |
Mean annual flow |
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Q 100 is |
100 year return peak flow |
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Q is |
Volume passing through cross section of creek or culvert in m^3/sec |
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Q depends on (7) (PRTGSDD) |
-previous weather conditions -rain -topography -ground cover -soil/subsoil -drainage area -drainage pattern |
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Culvert capacity depends on (2) |
-shape and area of inlet - depth of h20 (H; headwater pool) at inlet |
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H value Mof allows (2) |
-1 -0.7 - 0.8 normal |
