In civil engineering Highway engineering questions

HIGHWAY ENGINEERING QUESTION

What is IRC?

Indian road Congress

What is coefficient of longitudinal friction ?

Coefficient of longitudinal friction is 0.35 to 0.4

Speed. Friction

20-30km/h. 0.40

40km/h. 0.38

50km/h. 0.37

60km/h. 0.36

65km/h. 0.36

80km/h. 0.35

100km/h. 0.35

What is the coefficient of lateral fusion?

Coefficient of lateral friction is 0.15

Carriageway

Single lane 3.75m
Two lane without raised kerb. 7m
Two lane with raised kerb. 7.5 m
Intermediate carriageway. 5.5m
Multilane payment 3.5 m per lane

Minimum width of vehicle as per IRC 2.44 m

Width of shoulder as per IRC 2.5 m

Total reaction time as per IRC 2.53 sec

What is superelevation ?

Raising of outer edge of payment with respect to inner edge throughout the length of curve to contract centrifugal force is called superelevation.

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