Page 265 - Planning and Design of Airports

226 Airp o r t D e sign

D E
THRESHOLD
2B
2C

A
OBJECT

THRESHOLD
SLOPE

OBJECT
A
FIGURE 6-29 Runway end siting requirements.

These specifications are used to site the location of a runway’s
threshold so that approach and departure procedures associated with
that runway are not adversely affected by existing obstacles or ter-
rain. The siting specifications vary depending on a number of run-
way use conditions, including

SURFACE STARTS
AT END OF CLEAR
WAY IF ONE IS IN
PLACE 15° 3,233 FEET

1,000 FEET
500 FEET
TERPS (40:1)
15°
3,233 FEET

10,200 FEET
STARTS AT
DEPARTURE END
OF RUNWAY (DER)
OR END OF THE
CLEARWAY TERPS (40:1) TERPS (40:1) SEE
(IF ONE EXISTS) NOTE 1

Clearway SURFACE STARTS AT THE ELEVATION OF THE CLEARWAY
Slope SURFACE (IF ONE EXISTS)
80:1 or 1.25% 10,200 FEET
NOTES:
1. THIS IS AN INTERPRETATION OF THE APPLICATION OF THE TERPS SURFACE
ASSOCIATED WITH A CLEARWAY.
FIGURE 6-30 TERPS departure obstacle identifi cation surfaces.