1. Manual for Railway Engineering-Chapter-30: Ties;AREMA,2014
2. Rail-steel Deformed and Plain Bars for Concrete Reinforcement;ASTM A616,1979
3. Standard Specification for Uncoated High-Strenght Steel Bars for Prestressing Concrete;ASTM A772/A772M,1998
4. ASTM A82-1979, Cold-drawn Steel Wire for Concrete Reinforcement.
5. Standard Specification for Steel Wire, Indented, Low-Relaxation for Prestressed Concrete Railroad Ties;ASTM A881/A881M,2010