Hydrology Studio IDF File False 4 FHA City of Austin, TX Zone 1 I = B/(Tc + D)^E) Equation Coefficients = B, D, E, n/a 1,0,0,0,0 1,45.24,9.339,0.7399,0 1,0,0,0,0 1,53.47,8.65,0.7228,0 1,61.25,8.352,0.7147,0 1,69.96,7.941,0.6954,0 1,73.59,7.329,0.6732,0 1,77.31,6.832,0.6524,0 Intermediate Intensity Values = 5-min, 15-min, 30-min, 60-min 6.14,4.09,2.8,1.75 7.21,4.84,3.34,2.1 0,0,0,0 8.41,5.68,4.04,2.59 9.43,6.36,4.61,3 10.7,7.18,5.32,3.54 11.6,7.81,5.88,3.98 12.6,8.42,6.45,4.44 25 100 50