Table 7.4 Correlation of NOT Tuned Subgrade Modulus (E4)
 to Cone Resistance


Test Mile Post Average qc Tuned E (psi) E
Road Number (psi) Dynaflect FWD Dynaflect FWD


26A

26B

26C

26C

24

301

441

10A

15B

15A

15A

715

715

12

15C

15C


11.912

11.205

10.168

10.166

11.112

21.580

1.236

14.062

4.811

6.549

6.546

4.722

4.720

1.485

0.055

0.065


2900

2610

2175

2175

4712

1740

3190

5293

3625

---*

---*

1015

1015

2175

2175

2175


14600

 7900

 28500

 28500

 38600

 38600

 27500

105000

 8100

 4800

 5000

 6000

 5500

 26500

 5500

 5500


 18700

 11000

 25500

 20000

 38600

 25000

 20000

130,000

 10200

 7500

 7000

 11000

 10500

 18500

 9800

 10000


5.03

3.03

13.10

13.10

8.20

22.18

8.62

19.84

2.23





5.91

5.42

12.18

2.53

2.53


6.45

4.21

11.72

9.20

8.20

14.37

6.27

24.56

2.81

---



10.84

10.34

8.51

4.51

4.60


* Average qc within the depth of the difference of 1 m (EPT) and the
 overlying pavement

** Test not performed