ECE 416_HW2 Fall 2015 - Date ECE 416 Fall 2015 HOMEWORK#2 Traffic Calculation Due October 2 2015 Calculation AASHTO 1993 Traffic Input 1 The axle load

ECE 416_HW2 Fall 2015 - Date ECE 416 Fall 2015 HOMEWORK#2...

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1 Date: September 22, 2015 ECE 416 Fall 2015 HOMEWORK #2 Traffic Calculation Due October 2, 2015 Calculation: AASHTO 1993 Traffic Input 1.The axle load data are obtained from 30 class 6 vehicles. Calculate average truck factors for the conditions below. a)Flexible pavement with SN = 6, Pt = 2.0 (3 points) b)Flexible pavement with SN = 3, Pt = 2.5 (3 points) c)Rigid pavement with slab thickness D=6”, Pt = 2.5 (3 points) d)Rigid pavement with slab thickness D=12”, Pt = 2.5 (3 points) Axle Load, kipNumber of Daily Axles1051810201030510220530104010503Single front axle loadsTandem rear axle loads
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2 Date: September 22, 2015 ECE 416 Fall 2015 2.Complete the given ESAL calculation table and answer the questions. Given conditions are: Design life = 20 years Number of lanes = 4 (two ways) Directional distribution factor = 0.53 Annual traffic growth rate = 4 % (same for all vehicle classes) Please fill out table. (6 points) a)What is the design ESAL for HMA pavement? (2 points) b)What is the design ESAL for PCC pavement? (2 points) c)What is % traffic of class 9 vehicle? (
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  • Summer '19
  • Harshad number, Truck, HMA, FHWA, Single axles

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