Chapter 5
Table 5.1. Fixed-Wing Taxiways.
Class A Runway
Class B Runway
Item
Item
No.
Description
Requirement
Remarks
standing position.
For Air Force airfields other than
multi-mission, a gradient exception
of 5.0 % is permitted for a distance
of not more than 120 m [400 ft]. The
exception does not apply within 180
m [600 ft] of a runway entrance.
Here the 3.0% maximum applies.
For Air Force multi-mission airfield,
the gradient is limited to 1.5%.
The minimum distance between two
5
Max 1.0%
Rate of
successive points of intersection (PI)
Longitudinal
is 150 m [500 ft]. Changes are to be
Grade Change
accomplished by means of vertical
per 30 m
curves.
[100 ft]
Min 600 m [2,000 ft]between eye level Army, Navy and Marine Corps
6
Longitudinal
at 2.14 m [7 ft] and an object 3.05 m airfield taxiways.
Sight Distance
[10 ft] above taxiway pavement
Air Force airfield taxiways.
Min 300 m [1,000 ft].
Any two points 3 m [10 ft] above the
pavement must be mutually visible for
the distance indicated.
Min 1.0%
New taxiway pavements will be
7
Transverse
centerline crowned.
Grade of
Max 1.5%
Taxiway
Slope pavement downward from
centerline of taxiway.
Existing taxiway pavements with
insufficient transverse gradients for
rapid drainage should provide for
increased gradients when overlaid or
reconstructed.
The transverse gradients
requirements are not applicable at or
adjacent to intersections where
pavements must be warped to match
abutting pavements.
8
Transverse
Min 2.0%
Army, Navy, Marine Corps and Air
Grade of Paved
Force airfields, not otherwise
Max 4.0%
5-5
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