Just wondering about the most effective way to estimate the amount of levelling course required for 200m municipal road (with standard c & g) overlay program.
If you have no other options, I might just call your local asphalt company. I find that the guys that actually do it are usually pretty accurate. They may be eager to give you an answer for the possiblity of business.
How much ACP are you putting down? What is the ACP gradation for your level course?
You should be aware that 200 m of road is not much, so unless there is another project nearby, you will be paying a premium to start off with.
How wide is your road and what is the average depth of rutting on your road, as measured by a straightedge.
I have a few formulas and tricks that I use, but they all start with the $/tonne of locally supplied ACP. Where are you located? I am in Alberta and therefore if you are near, it could be very easy to get you some numbers.