不透水层面积分分级

温度/℃

≤10%

33.01108

11%~20%

34.41853

21%~30%

36.58246

31%~40%

36.69606

41%~50%

39.08632

51%~60%

41.0614

61%~70%

41.26859

71%~80%

45.9986

81%~90%

46.76027

>90%

48.16331