GATE CE 2017 Set 1 — Question 17
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Transportation Engineering → Airport Engineering → Elevation Correction
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Question
A runway is being constructed in a new airport as per the International Civil Aviation Organization (ICAO) recommendations. The elevation and the airport reference temperature of this airport are above the mean sea level and , respectively. Consider the effective gradient of runway as . The length of runway required for a design-aircraft under the standard conditions is . Within the framework of applying sequential corrections as per the ICAO recommendations, the length of runway corrected for the temperature is
Correct answer
(C) 2500 m
Solution
1.Elevation Correction: ICAO recommends a increase per rise in elevation.
.2.Temperature Correction:
Standard temperature at elevation : .Airport reference temperature .
Rise in temperature .
Correction: increase for every rise above standard temperature.
.
3.Check: Total increase = . Percentage increase = . Since , the corrections are valid.
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