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According to DMRB CD109, 100km/h is a suitable design speed for a new rural road.

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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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LEA CON DETENIMIENTO CADA UNO DE LOS  ÍTEM Y LUEGO SELECCIONE LA ALTERNATIVA QUE CORRESPONDA.

Los módulos MOOC propuestos por el Ministerio de Educación están incluidos en el tipo de lectura denominado

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LEA CON DETENIMIENTO CADA UNO DE LOS  ÍTEM Y LUEGO SELECCIONE LA ALTERNATIVA QUE CORRESPONDA.

¿Cómo se desarrolla el lector la comprensión crítica de un texto?

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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.

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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

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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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LEA CON DETENIMIENTO CADA UNO DE LOS  ÍTEM Y LUEGO SELECCIONE LA ALTERNATIVA QUE CORRESPONDA.

Una condición básica para proponer estrategias lectoras a los alumnos es

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LEA CON DETENIMIENTO CADA UNO DE LOS  ÍTEM Y LUEGO SELECCIONE LA ALTERNATIVA QUE CORRESPONDA.

El papel del lector-receptor es 

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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.

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