Hemispherical Head Design Tool ver E5.02
 Do [in] - outside diameter of head
 tb [in] - thickness before forming Hemispherical
 tf [in] - thickness after forming
 Corr [in] - corrosion allowance
Material and Conditions:            
 S [psi] - allowable stress 
Efficiency of weld in head. Not efficiency of head to shell. Use Weld Efficiency program.

 E - head longitudinal efficiency
 P [psi] - interior pressure
Calculated Properties:            
Pounds [steel] = 
App. 1-4(f) calculation is not included.
Volume [cuft] = 
See UCS-79(d), UNF-79(d), UHA-44(d) for head stress relief
The UG-16(b) minimum thickness requirement is not included.
This sheet does not calculate exterior pressure loads.
This sheet is for educational use only - use at your own risk.
nt [in] = tf-Corr    thickness with corrosion allowance removed
L [in] = (Do-2*nt)/2   inside radius with corrosion allowance removed
Required Thickness: UG-32(f)          
Treq [in] = (P*L)/(2*S*E-0.2*P)+Corr
Maximum Pressure: UG-32(f)          
Pmax [psi] = (2*S*E*nt)/(L+0.2*nt)
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