One of the more important issues to be discussed at the recent TRB AFB80 Committee meeting this week was the issue of 3D highway design models not being suitable for construction, particularly when automated machine guidance is being used to move the dirt and install the pavement. This creates major problems in the field.
I like to refer to this as the constructability of the model. Most highway design engineers do not understand and/or have the time consider this which has lead to a cottage industry of data takeoff pros who translate the design into machine control files that are not only more densely graded,but that recognize the limitations of the equipment.
This is not as much of an issue in vertical construction, but for horizontal the system is broken and it needs to be fixed. One idea might be to add a “Construction Engineer” into the workflow to cover these issues. Improved education of designers would also help.
What do you think?