According to DMRB CD109, 100km/h is a suitable design speed for a new rural road.
A highway is to be designed with 120km/h design speed. At one section, an equal tangent vertical curve must be designed to connect grades of +2.0% and –2.0%. Determine the length of curve required assuming provisions are to be made for minimum stopping sight distance, where the driver’s eye height =1.25m and the object height =0.5m).
Assume a minimum stopping sight distance of 215 metres is
required.
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Los módulos MOOC propuestos por el Ministerio de Educación están incluidos en el tipo de lectura denominado
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¿Cómo se desarrolla el lector la comprensión crítica de un texto?
A horizontal curve on a two-lane highway is designed with a 1020m radius, 3.65m lanes and a 120km/h design speed. Determine the distance that must be cleared from the inside edge of the inside lane to provide sufficient sight distance for minimum safe stopping distance of 215m.
Calculate the maximum crossfall on a road with a horizontal curve of 500 metres and a design speed of 85 km/h. Assume the coefficient of side friction is 0.15.
Convention:
Superelevation – positive slope
Adverse camber – negative slope
Calculate the maximum safe speed (km/h) on a road with a horizontal curve of 350 metres. The superelevation on the curve is 5% and the coefficient of side friction is 0.18.
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Una condición básica para proponer estrategias lectoras a los alumnos es
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El papel del lector-receptor es
In a cycle stopping experiment, the initial speed of a bicycle is 30km/h on a level pavement. The coefficient of friction of the cycle path surface is 0.2. Calculate the actual braking distance.