Civil Engineering - Airport Engineering - Discussion
Discussion Forum : Airport Engineering - Section 2 (Q.No. 15)
15.
The length of a runway under standard atmospheric conditions is 1800 m. If the actual reduced level of the site is 1200 m, the design length of the runway is
Discussion:
17 comments Page 1 of 2.
Suraj said:
6 years ago
@All.
Listen me! The Correct answer is A. Because everytime I am calculated 7percent of length of runway and answer added to length. So next time 7 percent of new lenght calculated and added. This process continued for 4 times. Because every 300 m rise length increases 7 percent. Here is 1200 m rise so we take 4 times.
Listen me! The Correct answer is A. Because everytime I am calculated 7percent of length of runway and answer added to length. So next time 7 percent of new lenght calculated and added. This process continued for 4 times. Because every 300 m rise length increases 7 percent. Here is 1200 m rise so we take 4 times.
(1)
Jaiwin said:
3 years ago
For every 300 m increase in elevation increase runway length by 7%.
So, 2000/300 = 4 time.
4*7% = 0.28.
Correction;
= 0.28L+L,
= 1.28L,
= 1.28*1800,
= 2304 Will be correct answer.
So, 2000/300 = 4 time.
4*7% = 0.28.
Correction;
= 0.28L+L,
= 1.28L,
= 1.28*1800,
= 2304 Will be correct answer.
(4)
Naga said:
4 years ago
7% increase in length for every 300m rise,
So for 1200 m its 4 times 300 m.
Therefore .28*1800 = 504.
So total increase in length 504+1800=2304m.
So the given answer is wrong.
So for 1200 m its 4 times 300 m.
Therefore .28*1800 = 504.
So total increase in length 504+1800=2304m.
So the given answer is wrong.
(3)
Niraj said:
7 years ago
Guys, I think 6.5°C rise per 1000m elevation.
And 1% increase in length per °C rise in temperature (standard temp. at sea level is 15°C) should also be considered.
And 1% increase in length per °C rise in temperature (standard temp. at sea level is 15°C) should also be considered.
Abiral bhattarai said:
1 decade ago
7/300*1200 = 28.
28/100*1800+1800 = 2304. So correct answer is 2304 which is not in option.
28/100*1800+1800 = 2304. So correct answer is 2304 which is not in option.
Mahesh said:
1 decade ago
Correct length may be = 1800+1800*0. 07*1200/300 = 2430 m. So answer must be B.
Aswin said:
6 years ago
The Correction for elevation and temp exceeds 35%. And Answer I got is 2484m.
Shiva Bhandari said:
5 years ago
7/300*1800=42%.
(42/100*1800)+1800,
756+1800.
2556 ~2560 is the right answer.
(42/100*1800)+1800,
756+1800.
2556 ~2560 is the right answer.
(7)
Atik said:
8 years ago
@Mahesh.
Check your calculation. It comes 2304 not 2430.
Check your calculation. It comes 2304 not 2430.
Lav yadav said:
5 years ago
I agree and thanks @Abiral Bhattarai and @Suraj.
(3)
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