Follow link at the end of this post, you can download all pdf document about piping stress like:
The Art of Checking Pipe Stress Computer Programs
Treatment of Support Friction in Pipe Stress Analysis
Local Stresses in Vessels – Notes on the Application of WRC-107 and WRC-297
Quick Check on Piping Flexibility
Toward More Consistent Pipe Stress Analysis
Evaluation of Flanged Connection Due to Piping Load
An Interpretation on Pressure Elongation in Piping Systems
The Art of Designing Pipe Support Systems
Rethinking the Allowable Pipe Load on Rotating Equipment Nozzles
Stress Analysis Methods for Underground Pipe Lines: Part 1 – Basic Calculations
Stress Analysis Methods for Underground Pipe Lines: Part 2 – Soil-Pipe Interaction
Equipment Reliability Improvement through Reduced Pipe Stress
Cold Spring of Restrained Piping System
Computer Application to the Piping Analysis Requirements of ASME Section III, Subscribe NB-3600
Thermal Insulation and Pipe Stress
Hazardous Situations Created by Improper Piping Analyses
Here is link http://www.pipestress.com/Pages/PEpapers.html