As per ICAO, for A, and B type of airports, maximum effective grade is

1.	As per ICAO, for A, and B type of airports, maximum effective grade is1. 1.75%2. 1.5%3. 1.25%4. 1%
Answer» Correct Answer - Option 4 : 1% Explanation: Effective gradient: As per ICAO Maximum effective gradient (i) For A, B and C type = Max 1% (ii) For D and E type = Max 2% Transverse gradient: Provided for drainge purpose. As per ICAO (i) For A, B type = Max. value 1.5% and Min value 0.5% (ii) For C, D and E type = Max. value 2% and min value 0.5% Rate of change longitudinal gradient: AS per ICAO (i) For A, B and C type = Max. 0.10% per 30 m for vertical curve (ii) For E and D type = 0.4% per 30 m for vertical curve.

As per ICAO, for A, and B type of airports, maximum effective grade is1. 1.75%2. 1.5%3. 1.25%4. 1%

Answer» Correct Answer - Option 4 : 1%

Explanation:

Effective gradient: As per ICAO Maximum effective gradient

(i) For A, B and C type = Max 1%

(ii) For D and E type = Max 2%

Transverse gradient: Provided for drainge purpose. As per ICAO

(i) For A, B type = Max. value 1.5% and Min value 0.5%

(ii) For C, D and E type = Max. value 2% and min value 0.5%

Rate of change longitudinal gradient: AS per ICAO

(i) For A, B and C type = Max. 0.10% per 30 m for vertical curve

(ii) For E and D type = 0.4% per 30 m for vertical curve.

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