The predicted traffic mix of a proposed four lane urban non-interstate freeway: Passenger cars (4.44KN/axle) = 69% 2-axle single unit trucks (22.2kN/axle) = 20% 2-axle single unit trucks (40kN/axle) = 5% 3-axle or more single unit trucks (100KN/axle) = 4% 3-axle or tractor semitrailers and combinations (90kN/axle) = 2% The projected AADT during the first year of operation is 3500 (both directions). If traffic growth rate is estimated at 4%, percent of traffic on the design lane is 42%, pi =2.5 and SN =3, determine the design ESAL at the design life of 20 years.
The predicted traffic mix of a proposed four lane urban non-interstate freeway: Passenger cars (4.44KN/axle) = 69% 2-axle single unit trucks (22.2kN/axle) = 20% 2-axle single unit trucks (40kN/axle) = 5% 3-axle or more single unit trucks (100KN/axle) = 4% 3-axle or tractor semitrailers and combinations (90kN/axle) = 2% The projected AADT during the first year of operation is 3500 (both directions). If traffic growth rate is estimated at 4%, percent of traffic on the design lane is 42%, pi =2.5 and SN =3, determine the design ESAL at the design life of 20 years.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:The predicted traffic mix of a proposed four lane urban non-interstate freeway:
Passenger cars (4.44kN/axle) = 69%
2-axle single unit trucks (22.2kN/axle) = 20%
2-axle single unit trucks (40kN/axle) = 5%
3-axle or more single unit trucks (100KN/axle) = 4%
3-axle or tractor semitrailers and combinations (90kN/axle) = 2%
The projected AADT during the first year of operation is 3500 (both directions). If traffic
growth rate is estimated at 4%, percent of traffic on the design lane is 42%, pi =2.5 and
SN =3, determine the design ESAL at the design life of 20 years.
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