# Example 3.1     
 Sy   =   66 ksi
 Su   =   66 ksi
 A0_over_AH   =   1.30 
 SyH = A0_over_AH * Sy  ; ksi 
 SuH = A0_over_AH * Su  ; ksi 
 A0_over_Af   =   2.5 
 R1 = A0_over_Af / A0_over_AH   
 Ar = 1 - 1/ R1  
 e1 = R1 - 1  


# Example 3.2      
 HB   =   300 
 KB   =   500 psi
 Su = KB * HB  ; psi 
 Sy = 1.05 * Su - 2.06e8 Pa ; psi

# Homework Problems:

TBD