User's Manual

108
12.2.2 The intersection method
The schematic diagram of this method is as shown below
(Left), and the input interface is as shown below (right). The
“Piont PT” is the intersection of road. The “点 X” corresponds to
the input intersection number.
Piont PT
Para A2Para A1
Radius R
Next piontFormer point
Radius:
ENT
A1:
N:(Pt1)
E:
A2:
1
The system will not accept negative Para. A1, Para. A2 nor
Radius. If inputting the radius, the system will insert a arc with
defined radius in between the former point and the next point. If
inputting parameters A1 and A2 of the spiral, the system will
insert defined spiral in between the line and the arc.
[Notes*]: When inputting A1 and A2 according to the length
L1 and L2 of the spiral, the formula to calculate A1
and A2 are as followed:
A1=√(L1·Radius)
A2=√(L2·Radius)
1) In the horizontal alignment list interface , press [ADD]
to enter the interface of “Define(H)” , then press [PT] ,
if there are no alignment data , enter the interface of
“Define(H)-Begin” to input the start point, specific
operation seeing “element method” ;
2) After input the start point data ,press [ENT] to enter the
interface of the input of intersection, as shown above