Road Base Calculator

This calculator computes the volume of gravel required for the construction of your road base and the relevant costs depending on the material chosen.
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CalculationInput
Output
﻿﻿L
:30.00 m​
 
﻿﻿W
:2.00 m​
 
﻿﻿D
:5.00 cm​
 
﻿﻿ρ
:1,000 kg / m^3​
 
﻿﻿c
:5%​
 
﻿﻿Price
:$90 t^-1​
 
﻿﻿A
:60.00 m2​
 ﻿=L⋅W
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﻿﻿V
:3.00 m3​
 ﻿=L⋅W⋅D
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﻿﻿m
:3,000 kg​
 ﻿=V⋅ρ
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﻿﻿Total mass
:3,150 kg​
 ﻿=m⋅(1+c)
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﻿﻿Total cost
:$284​
 ﻿=$/tonne ⋅total mass
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Where:
﻿﻿L
 is the road length
﻿﻿W
 is the road width
﻿﻿D
 is the road base depth
﻿﻿ρ
 is the density of the gravel, relevant to the specific gravel used in the project, measured in ﻿kg/m3
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﻿﻿c
 is the percentage of gravel surplus to be compressed, for safety requirements, take an additional 5–10%
﻿﻿A
 is the road area
﻿﻿V
 is the road base volume
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ExplanationRoad base is a layer of material used as the foundation for a road. It generally consisted of gravel or crushed rocks and sets a flat surface when compressed.
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Typical road make-up
Road base is responsible for providing structural support, distributing the forces generated by traffic to other layers of the road structure.
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Characteristics of typical road layers
Road layers, when compacted ensures road safety and prevents road cracking or deformations in the future.
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