What is EALF?

Equivalent axle load factor: An equivalent axle load factor (EALF) defines the damage per pass to a pavement by the type of axle relative to the damage per pass of a standard axle load. While finding the EALF, the failure criterion is important.

How do you calculate VDF?

VDF = Total EAL / Number of vehicles weighed (1) Page 4 Where total EAL = ∑ No. of axles in each weight class x load Equivalency factors of the weight class.

How is vehicle damage factor calculated?

Numerical example

1. Two lane carriage way.
2. Initial traffic in the year of completion of construction = 400 CVPD (sum of both directions)
3. Traffic growth rate = 7.5 \%
4. Design life = 15 years.
5. Vehicle damage factor based on axle load survey = 2.5 standard axle per commercial vehicle.
6. Design CBR of subgrade soil = 4\%.

What is VDF in transportation?

The vehicle damage factor (VDF) is a multiplier for converting the number of commercial vehicles of different axle loads and axle configurations to the number of standard axle-load repetitions. It is defined as the equivalent number of standard axles per commercial vehicle.

What is EALF in pavement?

The equivalent axle load factor (EALF) defines the damage per pass to a pavement in relation to the damage caused by a standard axle load (8.2 tonne). The EALF depends on the type, thickness and composition of the pavement.

What is equivalent standard axle?

A Equivalent Standard Axle is defined as a Dual Tyred Single Axle transmitting a load of 80kN (or 8.2 tonne) to the pavement.

What is cumulative equivalent standard axle load?

What is design ESALs? Design ESALs is a cumulative traffic load summary statistic. The statistic represents a mixed stream of traffic of different axle loads and axle configurations predicted over the design or analysis period and then converted into an equivalent number of 18,000-lb.

How do you determine axle load capacity?

How to Calculate Axle Weight

1. Add the total weight of the load you will be carrying to the total trailer weight.
2. Divide the total weight of the load and trailer by the total number of tandem axles. Include the load bearing axle in your count.
3. Write down the total weight of your tractor or pickup.