6-4. Experimental and theoretical moment capacities.......................... .....................130

6-5. Experim ental displacem ent ductility factors .................................... ............... 133

6-6. Experim mental curvature ductility factors ...................................... ............... 134

7-1. Plastic hinge length of various types of piles ..... .......... .............................139

7-2. Ductility factors for pile bents (load case 1)...................................... ............... 146

7-3. Section details for prototype FRP reinforced piles.............................. ...............150

7-4. Reinforcement details for prototype FRP reinforced piles .........................151

7-5. Ductility factors for prototype pile bents....................................... ............... 155

8-1. Parameters used to model behavior of unconfined concrete cylinder in
 co m p re ssio n ............................ ....................................................... ............... 17 1