Page 237 - Planning and Design of Airports

202 Airp o r t D e sign

Structural Runway Safety Area
Pavement Shoulder
Blast Pad

(a) (b)
Runway Protection Zone

Runway Object Free Area

(c) (d)
FIGURE 6-19 Runway system dimensions.

1. The runway structural pavement supports the aircraft with
respect to structural load, maneuverability, control, stability,
and other operational and dimensional criteria.
2. The shoulder adjacent to the edges of the structural pavement
resists jet blast erosion and accommodates maintenance and
emergency equipment.
3. The blast pad is an area designed to prevent erosion of the
surfaces adjacent to the ends of runways due to jet blast or
propeller wash.
4. The runway safety area (RSA) is an area surrounding the run-
way prepared or suitable for reducing the risk of damage to
aircraft in the event of an undershoot, overshoot, or excursion
from the runway. ICAO refers to an area similar to the run-
way safety area as the runway strip and the runway end safety

Inner Transitional OFZ
Runway OFZ

1
3

Inner Approach OFZ

1
50
FIGURE 6-20 Object-free zone dimensions.