Page 81 - QR CIMAR LASER SCREED

Grade Swap The grade in the X and Y axes can easily be swapped from positive to negative by
changing the plus/minus sign in grade entry mode. Refer to Grade Entry by Digit.

A typical application for this feature is road building. Example: The Rugby is set up on
the crown of the road and one axis is aligned to the centreline. In order to make the
cross axis grade fall to the right or left hand side, simply change the plus/minus sign
on the display.

3.5 Axis Identification

Axis identification When entering grade, it is important to know the correct direction in which the grade
is being entered.
Refer to the following illustration to identify the correct directions of the axes.

X+ Y+

Y— X—

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3.6 Conversion of Slope Into Percent of Grade

Conversion of slope Slope: The change in elevation per unit of measure (foot, metre, etc.)
Percent of Grade: The change in elevation per 100 units of measure (feet, metre, etc.)

Calculating percent of grade from slope:
[Slope] x 100 = [Percent of Grade]
Example:

Slope = 0.0059

Conversion = 0.0059 x 100

Percent of Grade = 0.590%

Rugby 870/880, Operation 21