Table 13 Definition and value of each parameter used in Eq. (2)
Parameters | Description | Value |
|---|---|---|
W18 | Predicted number of 80 KN (18,000 lb) ESALs | 32,800,000 |
ZR | Standard normal deviate | − 1.645 |
So | Combined standard error of the traffic prediction and performance prediction | 0.35 |
D | Slab thickness (in.) | Design output |
Pt | Terminal serviceability index | 2.5 |
ΔPSI | Difference between the initial design serviceability index, po, and the design terminal serviceability index, pt | 2 |
\(S_{c}^{t}\) | Modulus of rupture of PCC (flexural strength) (psi) | Identified based on concrete type |
Cd | Drainage coefficient | 1 |
J | Load transfer coefficient (value depends upon the load transfer efficiency) | 2.8 |
Ec | Elastic modulus of PCC (psi) | Identified based on concrete type |
k | Modulus of subgrade reaction (pci) | 350 |