86
Table 4.
2 Sensitivity Analysis
of FWD
Deflections for t
o

CO
If
in.
Parameter
Percent
Change
in Deflections
Di
2
3
4
Ds
D6
7
Da
1/2 Ei
9.5
3.4
3.3
2.8
1.7
0.55
0.0
0.0
2 Ei
-7.7
-3.7
-3.3
-3.2
-2.2
-1.1
-0.48
0.0
1/2 e2
23.3
14.0
7.1
1.4
-0.26
-0.55
-0.48
-0.28
2 E2
-15.5
-9.7
-5.6
- 2.0
-0.13
0.37
0.24
0.28
1/2 E3
14.0
16.5
16.4
12.8
6.5
0.81
-1.8
-2.3
2 E3
-11.8
-13.7
-13.3
-10.1
-5.0
-0.64
1.6
2.2
1/2 E4
37.4
50.5
58.3
69.7
82.8
94.9
101.9
104.4
PO
m
-p
-23.1
-31.0
-35.4
-43.7
-46.8
-50.2
-51.2
-51.1
Original pavement is composed of
E = 150 ksi
E2 = 85 ksi
E3 = 30 ksi
t = 3.0 in.
t2 = 8.0 in.
t = 12.0 in.
10 ksi
00