rotary laser on parking lot

[spyder777]

If the rotating laser is placed midway along the short side of a rectangular parking lot, the water designed to flow straight across to the other side, once the laser is set to proper slope and receiver is set on the rod at grade (grade being the same along the high side of p/l next to curb) will this setting work for the entire parking lot?
thanks for consideration to this question.

 

[eea]

Assuming the lot slopes as a constant plane, this should work. How about checking it against a quick survey level and taking some spot shots to confirm? If it is just myself on the site, I always ask the contractor foreman to assist me for a few quick shots to verify. That is with laser levels, pipe lasers, ... any grade just to be sure their laser is accurate. Most of the "dial-a-slope" settings concern me, I'd rather paint the target and witness it myself.

 

[spyder777]

I decided to run the laser flat today checking grade at various locations across the parking lot with a rod. I did take out the automatic level from behind the seat to check up on the laser. Thanks for the tip. RRW