APPENDIX.] THE BRACED AEOH. 393 



garded, and the value of y can be taken directly from the 

 table for y ? given in Art. 159. For a = 25 45', then we have 

 at once, since h = 19.5, 



for /3 = 0, y = 1.295 h = 25.25 ft., 



/3 = 0.2 a, y = 1.304 A = 25.42 ft., 

 /? = 0.3 a, y = 1.335 h = 26.03 ft., etc. 



The corresponding value of x is R cos /3. 



Having thus plotted the curve, and constructed the reaction 

 and thrust for each weight, the diagram for strains proceeds as 

 before, We thus form the following table : 



