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Culvert 130 through 133 are 15" CMPs with inlet flow control based designs, and therefore have been <br />designed individually. Each culverts design data is shown below. <br />CULVERT 130 <br />Subdrainage Area - Graphical Peak Discharge <br />1. Data: <br />Drainage area: .................... A = 3.2200 Acres <br />Runoff Curve Number: ............. CN = 83 <br />Time of Concentration: ........... Tc = 0.10 <br />Storm Type: ....................... = II <br />Pond and swamp areas spread <br />throughout watershed ............... = 0.00 percent of A <br />2. Frequency ........................yr <br />= 25 <br />3. Rainfall,P(24- hour) .............. <br />in = 2.40 <br />4. Initial abstraction, la............ <br />= 0.4096 <br />5. Compute la /P ....................... <br />= 0.1707 <br />6. Unit peak discharge, qu ...... csm /in = 982.33 <br />7. Runoff ,Q .........................in <br />= 0.9809 <br />8. Pond & swap adjustment factor .... Fp = 1.00 <br />9. Peak Discharge,gp ...............cfs <br />= 4.8481 <br />Culvert Design <br />Design Parameters <br />Section <br />Shape: <br />Circular <br />Material: <br />Corrugated Metal <br />Diameter: <br />15.00 in <br />Manning's n: <br />0.0250 <br />Number of Barrels: <br />1 <br />Inlet <br />Inlet Type: <br />45- Degree Bevels <br />Ke: <br />0.20 <br />Revised June 2011 (TR -60) Attachment 2.05.3(3) -1 -80 <br />