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Table 1 Criteria and classification of urban waterlogging for typical regions [33]

From: A survey on the influence of intense rainfall induced by climate warming on operation safety and service life of urban asphalt pavement

 CriteriaClassification
RegionsDepth H /cmScope S / m2Period t / minMildMediumSevere
Normal straight road≥15≥300≥6015 ≤ H < 2525 ≤ H < 40H ≥ 40
Crossroads≥15≥100≥3015 ≤ H < 2525 ≤ H < 40H ≥ 40
Concave bridge≥27≥100≥3027 ≤ H < 3535 ≤ H < 45H ≥ 45
Subway entrance≥25≥50≥1525 ≤ H < 3535 ≤ H < 65H ≥ 65
Underground garage entrance≥15≥100≥3015 ≤ H < 2525 ≤ H < 30H ≥ 30