A road bridge is proposed to be constructed across an alluvial stream with the estimated design discharge as 2500 m3/s. It is decided to adopt a total effective waterway equal to 300 m for this bridge as against the regime width of 237.5 m due to afflux considerations. If the HFL at the site is at RL 214 m, then the RL of the open foundation can be suggested as _______
A. 206.6 m
B. 208.5 m
C. 207.2 m
D. 210.2 m
Answer:A
A road bridge is proposed to be constructed across an alluvial stream with the estimated design discharge as 2500 m3/s. It is decided to adopt a total effective waterway equal to 300 m for this bridge as against the regime width of 237.5 m due to afflux considerations. If the HFL at the site is at RL 214 m, then the RL of the open foundation can be suggested as _______
A. 206.6 m B. 208.5 m C. 207.2 m D. 210.2 m