Jow did the grading go? Interested in how well your system works and what kind of tolerances you can grade to. How was the field prepared for the grading work to start with.
The grading went well. I had to take down a hill of about 10". My system is a fairly simple one, but it works well for the work I do. On this field, I set my control box to 3/10ths of an inch tolerance. But, I don't think it's really that close out on the field. If it were capped with pure sand, I think I could get it that close, and I've seen that done before.
I had sprayed this field 3 times with Roundup before I started, so there was almost no grass residue when I started. I tilled it first, then graded it roughly to get most of the hill down, then tilled it again before putting the final grade on it.
Glad you got things working right.
Is there a rule of thumb for the amount of grade for water run off, say on a playing field?
Where do you put the laser, at the highest point when striking a grade.
I would suppose the laser could go anywhere if trying for level at that particular location.
We try to get at least 1% slope on a game field. This first field I did is a band practice field, so I graded it to the existing slope, which was about 0.25% from goal line to goal line, and 0.20% from the center line of the field to the left sideline, and 0.40% to the right.
Today I started on the game field, which will be perfectly level from endzone to endzone, but will slope 1.4% to each sideline.
I could put the laser transmitter anywhere, but I always put it somewhere on the center line of the field. That way, I don't have to move it, if I go from one side of the center line to the other. I can just change the angle of the laser. (on the game field, I can go from +1.4% to -1.4%)
