DERIVATION AND ANALYSIS OF METHODS. 283 
TABLE X.—To Finp J anp BM From ORDINATES AND V. 
Length of 
ordinates. 
=9,027 
ZZy = 246.1 
From Table III F 
= 2 feet. 
9.17 feet. 
— 2X9.17X7,134.2 
= 43,613. 
3 43,013.7 
43,613 .7 
ees = 4.8 feet. 
ROH es 7,134.2 a 
a8 ” 3whDy 3X2X246.1 ee 
