In Earthwork, the pavement thickness sometimes may give user the wrong interpretation of the result as it will affect the area of cut/fill and will surely leave question marks.
In this documentation, we will go through example on the effect of the cut/fill area with consideration of pavement thickness and the one without.
Project file for reference here
|Case 1: with pavement thickness||Case 2: without pavement thickness|
Let’s take ‘Cut Section 1’ and ‘Cut Section 2’ as example.
- The area of cut and fill shown in cut/fill contour will be different due to software will compare the OGL with the platform with subgrade/pavement thickness
- When user assign subgrade/pavement thickness, the pavement thickness will be taken into consideration when comparing the levels to generate the cut/fill contour. As in this case, the OGL will be compared with the platform level with subgrade/pavement thickness.
- When there is no pavement thickness, the normal mechanism will be apply, OGL will be compared to the platform level.
To show the subgrade/pavement thickness, go to Options > Project Parameters > Earthwork > Detailing > Cut Section > Table > Add ‘Earthworks’
Kindly informed that the pavement thickness by default is 0.3m.
However, this value is editable and the pavement thickness is solely depending upon design engineer judgement.