the product of the unit weight and the dolos fluke length or 





(4) 



Nondimensionalizing the stress by 7C permits scaling of the stress for both 

 unit weight and dolos size. The nondimensional mean and standard deviation for 

 Crescent City dolos static response are given in Table 4 along with the 

 dimensional values. Variables in this table subscripted with 'cc' are 

 calculated directly from Crescent City dolos data, while those variables 

 without the subscript are for the design dolos. 



Table 4 

 Dolos Static Distribution Moments 



Distribution 



Dimensional histogram 

 Nondimensional histogram 

 Nondimensional log-normal 

 Modified log-normal 



Static Stress 

 Variable 



" sec 



lna' = 



lntr' 





Standard 



Mean 



Deviation 



m cc = 416 



S cc = 188 



m' cc = 25.8 



S'ee = 11-7 



«'cc = 3.15 



/9'ec = 0.45 



47. The mean of the nondimensional prototype static stress distribu- 

 tion appears to be approximately double that of preliminary results of 

 laboratory dolos static response tests. This difference between lab and 

 prototype static stress results likely lies in the difference in slope. The 

 instrumented prototype dolosse lie on a nearly flat slope. Visual inspection 

 of the prototype dolosse shows that they have longer span lengths between 

 boundary conditions than do the dolosse on steeper slopes, thus supporting 

 this hypothesis. The prototype static stress statistics are therefore 

 conservative . 



48. One method of generalizing the nondimensional Crescent City static 

 stress distribution given in Equation 3 is to simply apply scaling factors to 

 the distribution moments. As part of the Crescent City prototype study, FEM 

 stress modification studies were done for the dolos waist ratio, r = B/C , or 

 the ratio of the width of the shank to the length of the fluke (Figure 2) and 

 for the number of layers N L of dolosse on the slope. These studies are 



25 



