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Research Article

Impact of axle overload, asphalt pavement thickness and subgrade modulus on load equivalency factor using modified ESALs equation

ORCID Icon, , , , , & | (Reviewing editor) show all
Article: 1528044 | Received 29 Jun 2018, Accepted 20 Sep 2018, Published online: 15 Oct 2018

Figures & data

Figure 1. The National Highway N-5.

Source: NHA

Figure 1. The National Highway N-5.Source: NHA

Figure 2. Schematic plan of the research study.

Figure 2. Schematic plan of the research study.

Table 1. Vehicle classes and allowed maximum load

Figure 3. A view of heavy vehicles, WIM Recording Station.

Figure 3. A view of heavy vehicles, WIM Recording Station.

Figure 4. Number and type of vehicles observed on the WIM station during the data collection period.

Figure 4. Number and type of vehicles observed on the WIM station during the data collection period.

Table 2. Percentage of overloading based on legal and observed GVW

Figure 5. Percentage of average to maximum load for each axle of different classes of vehicles.

Figure 5. Percentage of average to maximum load for each axle of different classes of vehicles.

Figure 6. Comparison of legal GVW with maximum and average observed GVW.

Figure 6. Comparison of legal GVW with maximum and average observed GVW.

Figure 7. Percentage of overloaded vehicles in WIM data.

Figure 7. Percentage of overloaded vehicles in WIM data.

Table 3. Axle parameter (AP) Pais et al. (Citation2013)

Figure 8. Variation of truck factor with axle configuration and various loading conditions.

Figure 8. Variation of truck factor with axle configuration and various loading conditions.

Figure 9. Variation of truck factor with asphalt layer thickness for legal axle loads.

Figure 9. Variation of truck factor with asphalt layer thickness for legal axle loads.

Figure 10. Variation of truck factor with subgrade modulus for legal axle loads.

Figure 10. Variation of truck factor with subgrade modulus for legal axle loads.