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The total length of a runway is 1000 m. The elevation at distance, 0, 200 m, 400 m, 600 m, 800 m and 1000 m are 100.0 m, 101.0 m respectively. The effective gradient of runway will be
  • a)
    0.10%
  • b)
    0.26%
  • c)
    0.43%
  • d)
    0.65%
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The total length of a runway is 1000 m. The elevation at distance, 0, ...
Effective gradient of runway is defined as the maximum difference in elevation between the highest and lowest points on runway divided by total length of runway. So it is given by,
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Most Upvoted Answer
The total length of a runway is 1000 m. The elevation at distance, 0, ...
Given:
- Total length of the runway = 1000 m
- Elevation at distance 0 m = 100.0 m
- Elevation at distance 200 m = 101.0 m
- Elevation at distance 400 m = 100.0 m
- Elevation at distance 600 m = 101.0 m
- Elevation at distance 800 m = 100.0 m
- Elevation at distance 1000 m = 101.0 m

To find:
The effective gradient of the runway

Solution:
The effective gradient of the runway can be determined by calculating the change in elevation over the total length of the runway.

Step 1: Calculate the total change in elevation
- From 0 m to 200 m, the elevation increases by 1.0 m (101.0 m - 100.0 m)
- From 200 m to 400 m, the elevation decreases by 1.0 m (100.0 m - 101.0 m)
- From 400 m to 600 m, the elevation increases by 1.0 m (101.0 m - 100.0 m)
- From 600 m to 800 m, the elevation decreases by 1.0 m (100.0 m - 101.0 m)
- From 800 m to 1000 m, the elevation increases by 1.0 m (101.0 m - 100.0 m)

Step 2: Calculate the total length of the runway
- Total length of the runway = 1000 m

Step 3: Calculate the effective gradient
- Effective gradient = (Total change in elevation / Total length of the runway) * 100
- Effective gradient = ((1.0 m + (-1.0 m) + 1.0 m + (-1.0 m) + 1.0 m) / 1000 m) * 100
- Effective gradient = (1.0 m / 1000 m) * 100
- Effective gradient = 0.1%

Therefore, the effective gradient of the runway is 0.10%.
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The total length of a runway is 1000 m. The elevation at distance, 0, 200 m, 400 m, 600 m, 800 m and 1000 m are 100.0 m, 101.0 m respectively. The effective gradient of runway will bea)0.10%b)0.26%c)0.43%d)0.65%Correct answer is option 'A'. Can you explain this answer?
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