* The presence of CFRP grid and its confining effect resulted in a significant increase
 in the capacity of cast in place pile reinforced with carbon FRP bars and grid of
 approximately 52% compared to cast in place pile reinforced with carbon FRP bars
 and without the carbon grid. For cast in place piles reinforced with glass FRP bars
 and carbon FRP grid the effect of confinement on the capacity can not be determined
 because no control specimens exist for comparison.

* The results from the spun-cast piles indicate that the ductility of the grid piles was not
 significantly altered. These could be attributed to two major reasons: (1) The mode of
 failure was not always flexure and (2) Lack of concrete confinement due to damage
 accumulated during construction. The only span-cast pile that had both a flexure
 failure and concrete conferment was pile SCG2 and visual observations during the
 test indicated a change in the behavior using the CFRP grid as confinement
 reinforcement. Experimental data to support these visual observations do not exist.

* The spun-cast tests revealed problems with the manufacturing practice that proved to
 be very significant in influencing the behavior of the pile specimens.

* The experimental results from the spun-cast pile tests represent a lower bound
 solution to the ductility problem of spun-cast manufactured CFRP reinforced piles.

* The results from the experimental and theoretical static non-linear analysis indicate
 that member ductility did translate to system ductility when plastic hinge formation
 took place in all the system members.

* When the load was applied to the pile bent head (load case one) the system behavior
 was ductile while when the load was applied on the one of the external piles (load
 case two) failure of the external pile took place prior to plastic hinge formation in the
 other piles. However, the pile itself can provide a ductile response when impacted by
 a marine vessel.

* A ductile system behavior was feasible with pile bents using piles reinforced with
 FRP when using concrete confinement to produce ductility at the member level that
 eventually translated to system ductility.

* Prestressing of the FRP reinforcement was required because the theoretical results
 indicated that it improved both the stiffness and the ductility of the members and
 therefore the stiffness and ductility of the system.

* Using piles with two CFRP grid layers provided pre-cast prestressed CFRP reinforced
 pile bents with approximately 67% of the ductility of the new intact steel prestressed
 pile bent.

* The pre-cast prestressed CFRP reinforced pile bents had the highest ductility factor of
 all FRP reinforced piles bents. Although lower than the ductility factor of a new intact
 steel prestressed pile bent these pile bents did compare favorably with the steel
 prestressed pile bents with minor, moderate or severe corrosion damage. Actually