Face Dipstick 2200 Series, Operator'S Manual

Page: 88 / 107

Appendix A
Collecting Elevation Profile Data in Wheelpaths
A-2
you really only need to make a half-circle, or even a quarter-circle, if you make it in the
correct location.
3. Start a new Run and collect data along the right wheelpath. We suggest you name this Run
"B1" or "Box1", or use the station name of the starting location followed by a “1” When you
have completed the 250
th
step, stop turning the
Dipstick for a moment and
tap the letter “C” on the
screen.
The Dipstick will beep to
tell you that it has marked
this step as a corner of the
box. Now draw a circle
around the front foot at the
250-step point and write "B1 250" on the pavement. This will locate the 250
th
point on Box
1 if you need to find it later. Note: There is nothing magic about collecting data in boxes
that are exactly 250 steps long; over time, but we have found that this works very well. We
recommend keeping the boxes no longer than approximately 250 steps on a side. You can
use shorter boxes, but we have found that boxes that are 250 steps long are quite efficient.
4. Without stopping the Run or closing the program, turn 90

to the left and walk straight
across to the left wheelpath. This is normally ~6 steps. Stop turning the Dipstick for a
moment and press “C” again. The Dipstick will beep to tell you that it has marked this step
as a corner of the box, in the Run Notes for this run. Now draw a circle around the front foot
at the 256-step point and write "B1 256" on the pavement. This will locate the 256
th
point
on Box 1 if you need to find it later.
5. Without stopping the Run or closing the program, turn 90

to the left and walk back down
the highway in the left wheelpath. You will be walking against the flow of traffic, which
will allow you to see if any vehicles are not keeping clear of your measurement path. When
you are back at the "start" end of the box, normally at step ~506, stop turning the Dipstick
for a moment and press “C” once more. The Dipstick will beep to tell you that it has marked
this corner in the Run Notes. Now draw a circle around the front foot at the 506-step point
and write "B1 506" on the pavement. This will locate the 506
th
point on Box 1 if you need
to find it later.
6. Without stopping the Run or closing the program, turn 90

to the left and walk straight
across to the start point of the Box. This is normally ~6 steps, so this should be your ~512
th
step. You need to hit exactly on the point where you started. Stop the Run by Tapping
“STOP”. The computer will show you a graph of the complete run. You have now collected
the first Box on the highway, and are now ready to collect the second Box. (You will
"UnBox" the Runs later and link the longitudinal profiles together to form the right and left
wheelpaths.)
Tap the letter “C” here
to record the location of the corner.