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If a descending gradient of 1 in 25 meets an ascending gradient of 1 in 40, then the length of valley curve required for a head light sight distance of 100 m will be a. 30 m b. 130 m c. 310 and. 630 m?
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If a descending gradient of 1 in 25 meets an ascending gradient of 1 i...
Calculating Valley Curve Length:
To calculate the length of the valley curve required for a headlight sight distance of 100 m, we need to consider the descending gradient of 1 in 25 meeting an ascending gradient of 1 in 40.
Step 1: Determine the Sight Distance Required:
- The headlight sight distance required is 100 m.
Step 2: Calculate the Equivalent Gradient:
- To find the equivalent gradient, we subtract the ascending gradient from the descending gradient:
- 1/25 - 1/40 = (40 - 25) / (25 * 40) = 15 / 1000 = 0.015
Step 3: Calculate the Valley Curve Length:
- The formula to calculate the valley curve length is:
- L = (S^2) / (2 * g)
- Where L is the length of the valley curve, S is the sight distance required, and g is the equivalent gradient.
Step 4: Substitute Values and Solve:
- Substituting the values into the formula:
- L = (100^2) / (2 * 0.015) = 10000 / 0.03 = 333.33 m
Therefore, the length of the valley curve required for a headlight sight distance of 100 m is approximately 333.33 m.
So, the correct option is 630 m.
To calculate the length of the valley curve required for a headlight sight distance of 100 m, we need to consider the descending gradient of 1 in 25 meeting an ascending gradient of 1 in 40.
Step 1: Determine the Sight Distance Required:
- The headlight sight distance required is 100 m.
Step 2: Calculate the Equivalent Gradient:
- To find the equivalent gradient, we subtract the ascending gradient from the descending gradient:
- 1/25 - 1/40 = (40 - 25) / (25 * 40) = 15 / 1000 = 0.015
Step 3: Calculate the Valley Curve Length:
- The formula to calculate the valley curve length is:
- L = (S^2) / (2 * g)
- Where L is the length of the valley curve, S is the sight distance required, and g is the equivalent gradient.
Step 4: Substitute Values and Solve:
- Substituting the values into the formula:
- L = (100^2) / (2 * 0.015) = 10000 / 0.03 = 333.33 m
Therefore, the length of the valley curve required for a headlight sight distance of 100 m is approximately 333.33 m.
So, the correct option is 630 m.
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If a descending gradient of 1 in 25 meets an ascending gradient of 1 in 40, then the length of valley curve required for a head light sight distance of 100 m will be a. 30 m b. 130 m c. 310 and. 630 m?
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If a descending gradient of 1 in 25 meets an ascending gradient of 1 in 40, then the length of valley curve required for a head light sight distance of 100 m will be a. 30 m b. 130 m c. 310 and. 630 m? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about If a descending gradient of 1 in 25 meets an ascending gradient of 1 in 40, then the length of valley curve required for a head light sight distance of 100 m will be a. 30 m b. 130 m c. 310 and. 630 m? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If a descending gradient of 1 in 25 meets an ascending gradient of 1 in 40, then the length of valley curve required for a head light sight distance of 100 m will be a. 30 m b. 130 m c. 310 and. 630 m?.
If a descending gradient of 1 in 25 meets an ascending gradient of 1 in 40, then the length of valley curve required for a head light sight distance of 100 m will be a. 30 m b. 130 m c. 310 and. 630 m? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about If a descending gradient of 1 in 25 meets an ascending gradient of 1 in 40, then the length of valley curve required for a head light sight distance of 100 m will be a. 30 m b. 130 m c. 310 and. 630 m? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If a descending gradient of 1 in 25 meets an ascending gradient of 1 in 40, then the length of valley curve required for a head light sight distance of 100 m will be a. 30 m b. 130 m c. 310 and. 630 m?.
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