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(7) The traffic projection for a new pavement of a two-lane rural dual carriageway is as follows: Design period = 25 years AADT in current year = 5000 vehicles per day Direction factor = 0.5 Percent of heavy vehicles = 6% Annual traffic growth = 6% Damage index: ESA/HVAG = 0.75; SAR5/HVAG = 0.95; SAR7/HVAG = 1.65; SAR12/HVAG = 19.65. %3D %3D

(7) The traffic projection for a new pavement of a two-lane rural dual carriageway is as follows: Design period = 25 years AADT in current year = 5000 vehicles per day Direction factor = 0.5 Percent of heavy vehicles = 6% Annual traffic growth = 6% Damage index: ESA/HVAG = 0.75; SAR5/HVAG = 0.95; SAR7/HVAG = 1.65; SAR12/HVAG = 19.65. %3D %3D

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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(7) The traffic projection for a new pavement of a two-lane rural dual carriageway is as follows: Design period = 25 years AADT in current year = 5000 vehicles per day Direction factor = 0.5 Percent of heavy vehicles = 6% Annual traffic growth = 6% Damage index: ESA/HVAG = 0.75; SAR5/HVAG = 0.95; SAR7/HVAG = 1.65; SAR12/HVAG = 19.65. Table 2 Traffic load distribution SAST SADT TAST TADT TRDT 0.21 Load (kN) 70 0.12 0.31 0.18 0.21 80 0.34 0.29 0.21 0.48 0.41 90 0.45 0.59 0.48 0.34 0.38 Proportion of each axle group 0.136 0.294 0.315 0.103 0.152 (a) Calculate the average number of axle groups per heavy vehicle NHVAG using the data in the Table. (b) Calculate the design traffic in HVAG (NDT). (c) Calculate the design traffic in ESA, SAR5, SAR7 and SAR12.
Transcribed Image Text:(7) The traffic projection for a new pavement of a two-lane rural dual carriageway is as follows: Design period = 25 years AADT in current year = 5000 vehicles per day Direction factor = 0.5 Percent of heavy vehicles = 6% Annual traffic growth = 6% Damage index: ESA/HVAG = 0.75; SAR5/HVAG = 0.95; SAR7/HVAG = 1.65; SAR12/HVAG = 19.65. Table 2 Traffic load distribution SAST SADT TAST TADT TRDT 0.21 Load (kN) 70 0.12 0.31 0.18 0.21 80 0.34 0.29 0.21 0.48 0.41 90 0.45 0.59 0.48 0.34 0.38 Proportion of each axle group 0.136 0.294 0.315 0.103 0.152 (a) Calculate the average number of axle groups per heavy vehicle NHVAG using the data in the Table. (b) Calculate the design traffic in HVAG (NDT). (c) Calculate the design traffic in ESA, SAR5, SAR7 and SAR12.
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