Road Design - Pentax R-200 Series Instruction Manual

You can use this function to calculate basic design clothoid, raised type clothoid, and central peg
and width peg of simple curve, and record the coordinates by inputting and specifying each
coordinate of BP,IP and EP and the elements of the curve.
WARNING
• Road calculation excludes Z coordinate values from the calculation.
• Road calculation allows you to calculate up to 1,000 points in combination with number peg, plus
peg and width peg.
• The maximum number of points that can be processed per route is 1,000 points. When making a
design for a complex route having many consecutive IP points, you may not be able to obtain your
desired smooth linear shape if you calculate with an extreme and rough pitch. Also if there is a
mistake of inputting coordinates or elements, it may generate the coordinates quite differently
from your desired linear shape. To prevent yourself from these, we recommend you to send the
generated coordinates to PC and confirm the linear shape on the monitor or printer screen before
using.
[Measurement point name to be selected and specified]
Regarding measurement point name of each coordinate, input alphanumeric character up
to three character following the character of BP, IP and EP. When more than three characters
following BP, IP and EP or completely different alphanumeric characters by deleting the initial
character are input, it automatically generates the point name of an existing value.
This will also happen when you specify a coordinate by researching from the memory.
[Generation of measurement point name]
Numerical part: 3 digits and up to 001～999.
Integer part of plus peg: up to 01～99.
Width peg: Left width peg [L] is added at the end of the measurement point name.
Right width peg[R] is added at the end of the measurement point name.
NOTE: measurement point name is not processed for the additional distance.
[Generation of principal peg to be recorded by calculation and measurement point name of
• In case of Simple curve;
BC#、EC#、SP#
(｢#｣ of measurement point name of principal peg has actually become IP number.)
• In case of basic design clothoid;
KA#-1、KE#-1、KE#-2、KA#-2、SP#
• In case of raised type clothoid;
KA#-1、KE#-12、KA#-2
[The curve to be used in road design]
The curve mentioned in the right drawing can not be used , which is called reverse IP or IP curve,
although it can be used with basic design clothoid, raised type clothoid and simple curve (see left
drawing).
BP

12. ROAD DESIGN

IP
EP
OK
82
IP
BP EP
Not used