Elliptical Head Design Tool ver E5.02
 Do [in] - outside diameter of head ellipsoidal
 tb [in] - thickness before forming
If not specified use tf from note 1 below.
 tf [in] - thickness after forming (note 1)
 Corr [in] - corrosion allowance
Skirt volume is included in volume calculation
 Skirt [in] - straight skirt length
Material and Conditions:          
 S [psi] - allowable stress 
Efficiency of weld in head. Not efficiency of head to shell.

 E - head longitudinal efficiency 
 P [psi] - interior pressure
Calculated Properties:          
This sheet is for educational use only - use at your own risk. note 1: Likely tf [in] = 
App. 1-4(f) and UG-16(b) calculations are not included. Pounds [steel] = 
See UCS-79(d), UNF-79(d), UG-37(a)(1) for head stress relief. Volume with skirt [cuft] = 
This sheet cannot be used to check for vacuum loads. nt  thick - corr [in] =
D corroded ID [in] =
Required Thickness: App. 1-4(c), UG-37(a)(1)
Treq [in] = (P*D*K)/(2*S*E-0.2*P)+Corr
Maximum Pressure: App. 1-4(c), UG-37(a)(1)        
Pmax [psi] = (2*S*E*nt)/(K*D+0.2*nt)
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