The parapet walls are usually required on the valley side of the roadway, when the road is -
(a) retain the earth from slippage
(b) provide a good drainage system
(c) properly guide the vehicles to the roadway
(d) keep the road dry.
The correct Answer Is
(c) properly guide the vehicles to the roadway
(a) retain the earth from slippage
(b) provide a good drainage system
(c) properly guide the vehicles to the roadway
(d) keep the road dry.
The correct Answer Is
(c) properly guide the vehicles to the roadway
