can then be determined from this design distribution and compared to the 

 fatigue -reduced strength using Equation 28. If the stress exceeds the 

 strength, the designer must implement some strengthening scheme. Two possible 

 strengthening schemes include higher strength concrete and reinforcement. 

 Possible reinforcement schemes include fiber, steel rebar, and posttensioning, 

 as discussed earlier. Conventional structural design techniques can be used 

 to determine the effect and the relative benefits of these strengthening 

 schemes. The final step in the dolos structural design process could be 

 another economic analysis. 



41 



