Figure 16(a) plots the creep compliance values for PG 70-22 at t=70 sec. for the five maximum load variations from the creep loading programs, and Figure 16(b) plots the creep compliance function (using the fitted GPL parameters) to 100 sec., showing a near overlap for the five maximum loads. The same procedure was conducted for PG 70-28 SBS in (c) and (d).