Steps for

Problema $9\mathrm{.}48($Chin edited$)$ Drainage facilities are to be designed for a rainfall intensity of $7\mathrm{.}80c\frac{m}{h}r$ which corresponds to the $10-$year recurrence IDF curve event. The minimum soil infiltration is $10m\frac{m}{h}r$ and the area to be drained is primarily residential with lots on the order of $0\mathrm{.}2ha(0\mathrm{.}5ac).$ Use the NRCS method in this problem.

a$)$ Indicate the Hydrologic soil type you have in this area and the corresponding curve number if you assume the soil is under average antecedent moisture condition at the beginning of the design storm.

b$)$ Estimate the total runoff depth for that design storm in $mm.$

c$)$ Present the amount of initial abstractions for that design storm and corresponding amount that was infiltrated in mm $.$