Pentax R-200 Series Instruction Manual page 148

[Terms and curves to be used in Road Calculation]
BP Beginning point
of route
EP End point of
route
BC Beginning of
curve
EC End of curve
KA Beginning of
clothoid curve
KE End of clothoid
curve
BC1
BP
12.1 BP, IP, EP input
Press [F2][ROAD] in PowerTopoLite to open
BP DATA SETUP.
Press [ENT] to open the PN,X,Y,Z and PC input window
and input each.
Then, press [ENT] or [F5][ACCEPT] to view the IP DATA
SETUP screen.
NOTE:
Based on the input parameters in the following table, basic design clothoid, raised type clothoid
and simple curve are calculated.
You can input radius R, parameter A1,A2 in the range of 1m or more and less than 10,000m . If you
input only parameter A1, or only parameter A2, a message ｢clothoid<--->arc cannot cal.｣ is
displayed. This doesn't support road design composed from clothoid-simple curve or simple
IP1
Curve
2
EC1
SP1
KE2-12
KA2-1
Curve
1
IP2
Type
Basic design
clothoid
Raised type
clothoid
Simple curve
Intersection
IP point of main
tangent
IA Intersection
point of main
contact
CL Curve length
SP Secant point
IP3
SP3
KA3-1
KE3-1
KE3-2
Curve
KA2-2
3
Input items
Radius R
Parameter A1, A2
Parameter A1,A2
Radius R
83
KA3-2
EP