Study on Variation of Surface Runoff and Soil Moisture Content in the Subgrade of Permeable Pavement Structure

Table 3

Surface runoff coefficients at different rainfall intensities.

Structural section type	5.5 mm (min)		4.6 mm (min)		3.4 mm (min)		2.5 mm (min)
	Surface runoff (mm)	Surface runoff coefficient (%)	Surface runoff (mm)	Surface runoff coefficient (%)	Surface runoff (mm)	Surface runoff coefficient (%)	Surface runoff (mm)	Surface runoff coefficient (%)
1	630	95.5	520	94.2	380	93.1	277	92.3
2	240	36	160	29	50	12	9	3