1 2
1
2
3
4
5
6
7
8
9
10
5
6
7
8
9
10
11
12
13
14 15
3 4 5 6 7 8 9 10
15 16 17 18 19 20 21 22 23
b
a
Road_062
Gap chainage or station equation. Chainage or station back 10 = chainage or
station ahead 15.
a Old
b New
1 2
2
2
3
3
3
4
4
4
5
5
5
6
6
6
7
7
7
8
8
9
9
10
10
11
11
12
12
13
13
7 8 9 10 11 12
a
b
Road_063
Overlap chainage or station equation. Chainage or station back 13 = chain-
age or station ahead 7.
a New
b Old
In the case of the overlap shown in the example, the chainages or stations
between seven and thirteen appear twice. When a duplicate chainage or sta-
tion is entered, a message asks which one is to be used.
As more than one chainage or station equation is possible, a chainage or sta-
tion can appear more than twice on a design. In this example, the chainages or
stations 11 to 13 appear three times.
0.. ..5 6 7 8 9 10 11 12 13
7 8 9 10 11 12 13 14 15
11 12 13 14 15 16.. ..24
Road_069
Multiple chainage or
station
Example
Roads - General
691
