This is difficult to determine. You can only determine the original cost price and then add the required management fees, taxes and profits to the cost price.

That is to say, for a high-speed roadbed filling, determine the original purchase price per cubic meter of soil. For example, the purchased earthwork is converted into compacted cubic meters, which is 20 yuan/m3, plus 1 yuan/m3 for transportation. /km, rolling, leveling and other labor costs are roughly 2 yuan/m2, which is converted to 23 yuan/m3/km.

According to the above method, this experienced construction engineer asked for the accurate unit price of materials. Just estimate each sub-item and that's it.

Another simple method is to compare the budget software with the price limit announced by the owner. Generally, 5-10 points lower than the owner's price limit is a reasonable range.