67_HWKTTE 4004c - 57 Esteva method which is the method...

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57 Esteva method which is the method recommended by AASHTO in their procedure (See Chapter 5). The values recommended in the Withiam method yield an exact reliability index, while the values obtained using the Rosenblueth and Esteva result in an approximate quantity. Thus, the probability of failure, p f , was back calculated from the AASHTO recommended reliability indexes. Table 6-1 all through Table 6-6 show typical output results for each LRFD analysis performed. Tables 6-1 to 6-3 present the results for PDA at EOD, while tables 6- 4 to 6-6 present the commensurate for PDA at BOR. Tables 6-1 and 6-4 summarize the resistance factors, φ , evaluated for four different failure probabilities (i.e. reliability indexes) and eight bridge span lengths based on LRFD calibration of the method. Tables 6-2 and 6-5 show the equivalent ASD safety factors based on the resistance factors calculated using the LRFD calibration method for the same bridge span lengths and failure probabilities.
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67_HWKTTE 4004c - 57 Esteva method which is the method...

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