where to find labour or machine constant values online

I've never been compfortable trusting construction rates from unknown sources, and have also found in my experience that rates vary so significantly across companies, industries, countries and site conditions that standard rates are rarely good for anything more than comparison.

But if you want them, try the "rates" section of planning planet

I am curious about this too. Seems like in this day and age that information should be readily available and in a digital form to enhnace projects all over the world.