Civil Engineering - Highway Engineering - Discussion

B is the correct Answer.

C is the right answer.

I think C is the correct answer.

I think B is the correct answer.

I think only option C should be the right answer.

To understand the gradient between points A, B, and C, we need to analyze the difference in their reduced levels and how the terrain changes from one point to another.

Given data:
Point A: Reduced level = 500 m.
Point B: Reduced level = 505 m.
Point C: Reduced level = 510 m.

The points A, B, and C are 500 m apart, meaning the distances between each pair are:

Distance between A and B = 500 m.
Distance between B and C = 500 m.
Distance between A and C = 1000 m (A to B to C).

Analyzing the gradient:

1. Between A and B:
- The difference in reduced levels between A and B is( 505 - 500 = 5) m.
- Since the reduced level at B (505 m) is greater than at A (500 m), there is a *positive gradient* between A and B. The terrain rises from A to B.

2. Between B and C:
- The difference in reduced levels between B and C is( 510 - 505 = 5) m.
- Since the reduced level at C (510 m) is higher than at B (505 m), there is a *positive gradient* between B and C. The terrain continues to rise from B to C.

Conclusion:
The road between points A and C has a *positive gradient* overall. There is a rise from A to B (positive gradient), and then from B to C, the terrain continues to rise, so the gradient between A and C is positive throughout. There is **no negative gradient** between any of the points.

Thus, the road has *a positive gradient between A and C*.