Hi Jonny
They are really two different methods of vertical design.
VALGN is an element based method, whereby you use fixed floating and free elements to build up a tangential vertical alignment.
VERAT uses a IP's (intersection points) along with specification of the chainages and the levels of the IP, plus the curve parameter (HOG / SAG / K Value).
I think its fair to say that many people use VALGN, as they like to be able to specify precise Tangent Points, but IP alignment also has its uses.
I would suggest having a look at the Online Help for more detailed information on coding VALGN versus VERAT.
Hope this helps.
Simon Pegg
Civil Support.
They are really two different methods of vertical design.
VALGN is an element based method, whereby you use fixed floating and free elements to build up a tangential vertical alignment.
VERAT uses a IP's (intersection points) along with specification of the chainages and the levels of the IP, plus the curve parameter (HOG / SAG / K Value).
I think its fair to say that many people use VALGN, as they like to be able to specify precise Tangent Points, but IP alignment also has its uses.
I would suggest having a look at the Online Help for more detailed information on coding VALGN versus VERAT.
Hope this helps.
Simon Pegg
Civil Support.