Ee

END OF RUNWAY

OR AIRFIELD

TRAFFIC

SURFACE

H

CONTROL

TOWER

LOCATION

0o 35'

Eb

Gs

D2

Given:

E as = 33.5 m (110') MSL E b = 32.3 m (106.0') MSL

D 2 = 1,828.8 m (6,000')

G s = - 2 min

Find E e :

E e = 33.5 m (110') + H

= 33.5 m (110') + (1,828.8 m (6,000') x tan (35 min - 2 min))

= 33.5 m (110') + (1,828.8 m (6,000') x 0**.**0096)

= 33.5 m (110') + 17.6 m (57.6')

= 51.1 m (167.6') MSL

Required Eye Level Height = E e - E b = 51.1 m (167.6') - 32.3 m (106.0') = 18.8m (61.6')

CONCLUSIONS:

a. 18.8 m (61.6') height is larger and therefore controls.

b. Eye height to cab ceiling is 2.1 m (7'), therefore overall height is (2.1 m (7') +18.8 m (61.6') =

20.9 m (68.6')).

c. In this case minimum tower height of 20.4 m (67') will not satisfy requirements (see figure

A18.4). Therefore, in order to meet the minimum 35-minute depth perception requirement, an

additional floor must be added to increase the overall height of the proposed control tower.

floor levels or by the 35-minute depth perception requirement, whichever is greater. As a rule, all

towers have the following floors, starting with the ground floor (see figure A2-4):

A18.3.1. Chief Controller Office, 3 m (10').

A18-5

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