PROBLEMS IN PROTECTING HIGH EMBANKMENT WITHOUT COMPROMISING THE ROAD SAFETY – CASE STUDY

Abstract

Nowadays, NHAI is taking up the access controlled green highways as expressways. Since, the road is access controlled, the majority of the alignment is going through either in high cutting or in high filling with VUPs, VOPs, FLYOVERs, INTER- CHANGEs etc and hence, the alignment is going through high embankments. Therefore, embankment of road needs more protection against scour due to rains. Accordingly, IRC -SP -99 -2013 Manual for expressways has come up with certain protection measures like kerb channel (photo 1 a) with concrete chutes (photo 1 b) along the slope of the embankment on toe side after paved shoulder as directed by IRC SP 42. It guides the storm water to the plain concrete chute and reduce the damage of the embankment from scour. But it has got certain problems and that will be discussed by the author in this paper.