This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: has been widely approved by the geotechnical engineers. Some of the advantages and disadvantages of the LRFD method over the ASD method are presented next (Withiam et al., 1997). Advantages of LRFD Over ASD 1. Account for variability in both resistance and load. 2. Achieves relatively uniform levels of safety based on the strength of soil and rock for different limit states, foundation types, and design methods. 3. Provide more consistent levels of safety in the superstructure and substructure when the same probabilities of failure are employed. 4. Using load and resistance factors provided in the code, no complex probability and statistical analysis is required. Limitation of LRFD 1. Implementation requires a change in design procedures for engineers accustomed to ASD. 2. Resistance factors vary with design methods and are not constants....
View Full Document
- Spring '11