CS ADR-DSN.B.075 Distance between slope changes on runways

Undulations or appreciable changes in slopes located close together along a runway should be avoided. The distance between the points of intersection of two successive curves should not be less than:

(a)the sum of the absolute numerical values of the corresponding slope changes multiplied by the appropriate value as follows:

(1)30 000 m where the code number is 4;

(2)15 000 m where the code number is 3; and

(3)5 000 m where the code number is 1 or 2; or

(b)45 m; whichever is greater.