cost per foot to dig a trench
I'm new to residential irrigation and still trying to get a grasp as to "what is standard or typical". Today's puzzle is trying to estimate the cost of digging the trench that the pipe lays in.
I am writing a quote for my second job. My first trench was dug by hand by 2 men. When I look at the first job. It took 62 man hours to remove sod, dig and then re-fill, then replace sod on 240 feet of trench. That figures to about 1 man-hour per 4 feet. If I charge $20/hr per man, that's about 5$ per foot labor to charge for the service. Did I have slow employees or is this somewhere near reality?? Off the top of my head, I would have guessed $2/foot to be used to calculate how much to charge.
Or secondly, maybe someone can tell me where to read about the prefered way to dig an irrigation trench? I may be working the hard way and wrong way.
Thanks in advance