Previous concrete , engineering homework help

I need help with calculating the pervious concrete thickness and the storage capacity? my project is to build pervious concrete on a high way shoulder due to that we need to find the thickness of it and the storage capacity to store the 100-year storm-water runoff. I have a report from the american concrete institute in this report we will find all the explanation of how to calculate it. however, it needs to civil engineer to understand it. Please let me know if anyone can help me out. Thank you       

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