Table 1. Dry sieve and RSA means of sample 

 set A used to obtain equation 2. 



Sample 



Dry 



sieve 



RSA 



(No.) 



(phi) 



(mm) 



(phi) 



(mm) 



19 



1.69 



0.3099 



1.33 



0.398 



29 



2.16 



0.2238 



1.89 



0.270 



39 



1.46 



0.3635 



1.14 



0.454 



49 



1.98 



0.2535 



1.58 



0.335 



59I 



0.69 



0.6199 



1.07 



0.476 



70 



1.54 



0.3439 



1.27 



0.415 



80 



2.12 



0.2380 



1.80 



0.287 



93 



2.46 



0.1817 



1.74 



0.299 



97 



2.43 



0.1856 



1.94 



0.261 



107 



1.59 



0.3322 



1.21 



0.432 



117 



1.81 



0.2852 



1.33 



0.398 



126 



1.49 



0.3415 



1.12 



0.460 



135 



2.18 



0.2207 



1.84 



0.279 



145 



2.80 



0.1436 



1.88 



0.272 



155 



1.78 



0.2912 



1.57 



0.337 



165 



1.66 



0.3164 



1.35 



0.392 



175 



2.17 



0.2222 



1.86 



0.276 



185 



2.23 



0.2132 



1.83 



0.281 



198 



1.57 



0.3368 



1.20 



0.435 



209 



1.40 



0.3789 



1.11 



0.463 



211 



2.11 



0.2316 



1.83 



0.281 



220 



1.62 



0.3231 



1.36 



0.390 



222 



1.47 



0.3610 



1.21 



0.432 



234 



2.14 



0.2269 



1.83 



0.281 



247 



1.32 



0.4005 



0.97 



0.511 



252 



1.62 



0.3253 



1.26 



0.418 



271 



1,24 



0.4234 



0.95 



0.518 



284 



1.44 



0.3686 



1.47 



0.361 



287 



2.42 



0.1869 



2.14 



0.227 



296 



1.63 



0.3231 



1.29 



0.409 



Cumulative curve for this sample was 

 extrapolated to obtain value for the 

 10th percentile. 



21 



