// HydroCAD IDF file // Copyright (c) 2005 HydroCAD Software Solutions LLC // To create a custom IDF definition, copy this file and // edit the content as required. For details see IDF.txt // The following name should match the file name, with the // comment used for any additional information. name=VA-Arlington comment=Arlington, VA coefficients based on NOAA Atlas 14 // Set parameter units depthunits=inches timeunits=hours duratunits=minutes // Set minimum and maximum allowed duration duration=5 24*60 // Now define coefficients for each of the events // coef1= B D E -and- I = B / (Duration + D)^E event=2-Year coef1= 52.73 11.25 0.83 event=5-Year coef1= 50.63 10.50 0.77 event=10-Year coef1= 45.98 9.25 0.72 event=25-Year coef1= 41.35 7.75 0.66 event=50-Year coef1= 38.56 7.00 0.61 event=100-Year coef1= 32.29 5.00 0.55