fig. 2. Interactive effect of joint spacing and PCC thickness, h , on JPCP performance: a – cracking, b – roughness (1 – h = 20.0 cm, 2 – h = 22.5 cm, 3 – h = 25.0 cm, 4 – h = 27.5 cm, 5 – h = 30.0 cm, design life – 20 years, PCC (JPCP) – 20–30 cm, base (crushed gravel) – 10 cm, E = 220.5 MPa, AADTT – 8,000, wet-freeze doweled – D = 2.5 cm) Table 2. Summary of results of sensitivity analyses for rigid