58 I.I VI. -LOAD STRESSES 



the loads one by one. taking a sub-total for each addition. 

 Thus, the following numbers are added: 



110 



420*8 



4 13's 



110 



420*8 



41 



If the final total checks 284 + 391 X 2 = 866, the table 

 of load sums is correct. 



AsMinu' now that the table of load sums for E4Q has 

 been completed. The table of moment sums may now be 

 found as directed below. The following numbers are to 

 be added one by one, taking a sub-total for each addition: 



8 10's 

 6 30's 

 5 50's 

 570*8 

 V 90's 

 5 103's 

 6 116's 

 5 129's 

 8 142's 

 81 

 51, 

 5 192's 

 5-212's 

 9 232's 

 5 245'a 

 6 258's 

 5 271 's 

 5 284's 

 1285 

 1287 

 1289 



and all odd numbers up to St.:, 



If the final total checks up 183,689, which is figml 

 independently, the table of moment sum- i> correct. 



The preceding additions may be made most satisfac- 

 torily on a recording adding machine. Table 2 was cal- 

 culated in this v 



It will be noted that the table of load sums serves as a 

 table of differences for the table of moment sums. 



