Hi,
I am using MX Road V8i, SS2. I had problem when I am doing Horizontal alignment Design using Menu - Design/Alignment.
I was trying to apply transition between Compound Curves (R1=1000,L1=172.972; R2=500,L2=80.947). Its Like CURVE1-START TRANSITION -CURVE2-END TRANSIION. No Transition for Curve1
When I apply transition of 50m, for Start Transition Its is taking only 25m with a warning message “Compound Curve – RL Value amended to that for Smaller radius”. End Transition was taken correctly as 50m.
I can get 50m Transition length, only if I gave 100m Transition length for Start Transition.
I found that, MX is re-calculating Start Transition as (R2/R1 * Transition Length : (500/1000)*50=25).
Why it is like this in MXRoad? Is there any technical reason behind it?
Regards
Anil
can I suggest you look in the "Help".
Help>Contents
MXROAD Suite Online Documentation
MXROAD
Help
Design
Aignment
Alignment - Principles
Transitions
Clothoid transitions - at the bottom of the page
rgds
Peat
Hi Peat,
Thanks for the reference.
I found the following points in that which relevant to the present case.
• If two adjacent elements have the same hand (either left or right) part of the transition with the lowest RL value is fitted between the elements.
• The common transition length between compound curves cannot be specified directly. To achieve this result, calculate the input values of either the common RL value or the transition length LA and LB (L = LB-LA)
I tried to provided different Transition lengths for two curves so that its difference can be taken as transition length, but was not successful.
Can anyone help me in this?. Or else anyone knows how to achieve common RL for both transitions?