DARWin(tm) - Pavement Design <br />A Proprietary AASHTOWARE(tm) <br />Computer Software Product <br />Flexible Structural Design Module <br />GeoPacific Engineering, Inc. <br />14835 SW 72nd Avenue <br />Portland, OR 97224 <br />Michael T. Baker <br />Project Description <br />18-4986 177 Day Island Road - Private Drive / Parking Lot - New Pavement <br />Section <br />Flexible Structural Design Module Data <br />18-kip ESALs Over Initial Performance Period: 26,624 <br />Initial Serviceability: 4.2 <br />Terminal Serviceability: 2.5 <br />Reliability Level 85 <br />Overall Standard Deviation: .5 <br />Roadbed Soil Resilient Modulus (PSI): 5,000 <br />Stage Construction: 1 <br />Calculated Structural Number: 2.18 <br />Simple ESAL Calculation <br />Initial Performance Period (years): 20 <br />Initial Two-Way Daily Traffic (ADT): 100 <br />% Heavy Trucks (of ADT) FHWA Class 5 or Greater: 3 <br />Number of Lanes In Design Direction: 2 <br />Percent of All Trucks In Design Lane 100 <br />Percent Trucks In Design Direction 50 <br />Average Initial Truck Factor (ESALs/truck): 2 <br />Annual Truck Factor Growth Rate 0 <br />Annual Truck Volume Growth Rate 2 <br />Growth: Compound <br />Total Calculated Cumulative Esals: 26,624 <br />