1.2
178, 203 mm
203
0.8
254
0.4
Outagamie County Airport
Boeing 757
LOC 1
LOC 4
LOC 9
LOC 23
0
14 Mar
19
24
29
3 Apr
8
13
18
23
28
Figure 31. Amount of damage during spring thaw at Outagamie
County Airport.
5000
Boeing 757
y = 41732x 0.5493
4000
R 2 = 0.69
3000
2000
1000
0
400
800
1200
1600
Subgrade Modulus (MPa)
a. Boeing 757.
5000
Boeing 757
y = 41732x 0.5493
4000
R 2 = 0.69
3000
2000
1000
0
400
800
1200
1600
Subgrade Modulus ( MPa )
b. MD-DC9.
Figure 32. Effect of subgrade modulus on the horizontal tensile
stress at the bottom of the PCC layer (OCA and CWA).
27