Systems Features and Basic Operation
•If the Rod Eye Receiver indicates the plane of laser light is too high or too low, have a second person rotate the Rotating Laser on the tripod in small steps until the Rod Eye Receiver indi- cates “On Grade.”
7.Enter on the Rotating Laser the required percent of grade for each axis and allow the Rotating Laser to level itself again.
8.Bench the machine. See the “Benching and Operating Your Machine” procedure in this section.
Method Two:
NOTE: This procedure requires that the elevations of the grade stakes are correct and aligned to the slope or percent of grade required.
1.Set a minimum of two surveyed grade stakes. The stakes must have elevation information.
2.Place the Rotating Laser a few feet (meters) behind the first grade stake and in line with one of the far grade stakes (it is not critical to align the Rotating Laser exactly). (Refer to Figure 9.)
NOTE: Follow the guidelines at the beginning of this section when placing the Rotating Laser.
3.Switch on the Rotating Laser. Level the Rotating Laser.
4.Roughly align one of the axis to the grade stakes by sighting over the top of the Rotating Laser (Refer to Figure 7).
5.Set both the counters on the Rotating Laser to the required percent of grade (If needed, see the Rotating Laser Operation Manual).
Figure 9. Method Two: Align Rotating Laser with Grade Stakes
NOTE: The Grade Rod must be held plumb for each of the readings taken in the following steps.
6.Establish the H.I. (height of the instrument) for the plane of laser light.
a.Align the bottom of the Grade Rod to the mark on the near grade stake.
b.Adjust the Rod Eye Receiver up and down until it indicates “On Grade.”
c.Adjust the Rod Eye Receiver for any cut or fill amount indicated by the grade stake.
•If the grade stake shows a cut, extend the Grade Rod and Rod Eye by the amount shown as a cut.
•If the grade stake shows a fill, lower the Rod Eye by the amount shown as fill.
Figure 8. Grade Stake with Elevation Mark