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T2a definition in API 650 Variable Design Point 1

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rab1944

Structural
Joined
Dec 29, 2006
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46
Location
US
Would someone please define t2a in
API 650 Section 5.6.4.5 (Variable Design Point).

Thanks
 
t2a = thickness of the second shell course, in mm (in.), as calculated for an upper shell course as described in 5.6.4.6 to 5.6.4.8, exclusive of any corrosion allowance. In calculating second shell course thickness (t2) for design case and hydrostatic test case, applicable values of t2a and t1shall be used.
 
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