This contains SACS wikis related to the SACS PSI program.

1. A step-by-step approach to Pile/Soil Interaction (PSI) analysis and diagnosing errors
2. Error message with **ERROR-STIFFNESS MATRIX IS NON-POSITIVE DEFINITE FOR LOAD CASE#
3. Nonsymmetrical T-Z curve
4. Single Pile Analysis
5. Soil Behavior Representation in SACS and Pile Increment
6. Soil Liquefaction
7. Pile thickness effects Pile Capacity?
8. Compression & Tension Capacity Considering Pile Weight
9. Pile analysis - Compression Capacity
10. Pile Look Up Error
11. PSI factors for SACS input
12. No Soil plot in Chart Files
13. ERROR - SOIL T-Z HAS ILLEGAL STRATA ORDER & ERROR - SOIL STRATA DESCRIPTION
14. Consideration of soil liquefaction in PSI input
15. PSI warning on DY-RZ Stiffness
16. CPT data in PSI input
17. Pile Code Check
18. Pile Local Co-ordinate System
19. ERROR NUMBER OF SOIL TABLES BEING INPUT EXCEEDS THE NUMBER INDICATED BY PILE INPUT
20. Tubular Section resistance factors with Piles
21.API Option in PSI input Line