Dear Sir,
It is fine to design vertical profile for two lane or undivided carriageway. But when we go for design a four lane divided carriageway requiring different FRL at both median edges we face difficulties. Since there is one master string at median center, than how can we design the vertical profile containing different RL at median edge? If we create two master string at both median edge than there will be mismatch in chainage.
Kindly guide us