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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 535 m above the mean sea level and 22.65°C, respectively. Consider the effective gradient of runway as 1%. The length of runway required for a design-aircraft under the standard conditions is 2000 m. Within the framework of applying sequential corrections as per the ICAO recommendations, the length of runway corrected for the temperature is 
  • a)
    2223 m
  • b)
    2250 m
  • c)
    2500 m
  • d)
    2750 m 
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A runway is being constructed in a new airport as per the Internationa...
Correction for elevation : 7 % increase per 300 m height  

∴ Corrected length = 2000 + 249.7 = 2249.7 m
Correction for temperature :
std. Atm temp 15 - 0.0065 *535 + 11.52°C
ΔT = 22.65 -11.52 = 11.13°C

∴ Corrected length 2249.74 250.32 
= 2500.02m
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Most Upvoted Answer
A runway is being constructed in a new airport as per the Internationa...
Correction of Runway Length for Temperature

Given data:
- Elevation of the airport = 535 m
- Airport reference temperature = 22.65°C
- Effective gradient of runway = 1%
- Length of runway required for design-aircraft = 2000 m

The correction of the runway length is done as per the International Civil Aviation Organization (ICAO) recommendations. The correction is done to account for the effect of temperature on the performance of the aircraft.

The correction is done in sequential steps as follows:

Step 1: Correction for elevation
- The correction for elevation is done to account for the reduction in air density with increasing altitude.
- The correction factor is calculated using the ICAO standard atmosphere.
- For an elevation of 535 m, the correction factor is 1.036.
- The corrected runway length = 2000 x 1.036 = 2072 m

Step 2: Correction for temperature
- The correction for temperature is done to account for the reduction in air density with increasing temperature.
- The correction factor is calculated using the ICAO standard atmosphere.
- For a temperature of 22.65°C, the correction factor is 1.097.
- The corrected runway length = 2072 x 1.097 = 2270 m

Step 3: Correction for gradient
- The correction for gradient is done to account for the effect of the slope of the runway on the performance of the aircraft.
- For an effective gradient of 1%, the correction factor is 1.015.
- The final corrected runway length = 2270 x 1.015 = 2306.55 m

Therefore, the corrected length of the runway for the given conditions is 2500 m (rounded off to the nearest multiple of 50 m as per ICAO recommendations).
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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 535 m above the mean sea level and 22.65°C, respectively. Consider the effective gradient of runway as 1%. The length of runway required for a design-aircraft under the standard conditions is 2000 m. Within the framework of applying sequential corrections as per the ICAO recommendations, the length of runway corrected for the temperature isa)2223 mb)2250 mc)2500 md)2750 mCorrect answer is option 'C'. Can you explain this answer?
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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 535 m above the mean sea level and 22.65°C, respectively. Consider the effective gradient of runway as 1%. The length of runway required for a design-aircraft under the standard conditions is 2000 m. Within the framework of applying sequential corrections as per the ICAO recommendations, the length of runway corrected for the temperature isa)2223 mb)2250 mc)2500 md)2750 mCorrect answer is option 'C'. Can you explain this answer? 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 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 535 m above the mean sea level and 22.65°C, respectively. Consider the effective gradient of runway as 1%. The length of runway required for a design-aircraft under the standard conditions is 2000 m. Within the framework of applying sequential corrections as per the ICAO recommendations, the length of runway corrected for the temperature isa)2223 mb)2250 mc)2500 md)2750 mCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for 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 535 m above the mean sea level and 22.65°C, respectively. Consider the effective gradient of runway as 1%. The length of runway required for a design-aircraft under the standard conditions is 2000 m. Within the framework of applying sequential corrections as per the ICAO recommendations, the length of runway corrected for the temperature isa)2223 mb)2250 mc)2500 md)2750 mCorrect answer is option 'C'. Can you explain this answer?.
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