# API 653 Exam Chapter 6

## API 653 Exam Chapter 6 – Evaluation of Corroded Tanks

Take a Free API 653 Exam Chapter 6 Practice test with Latest Evaluation of Corroded Tanks Question and Answers

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## Q3. API 653: shell settlementWhat shape does differential settlement follow?

14. Q4. API 653: maximum allowable deflection
Maximum allowable out-of-plane deflection S (ft) is given by the equation:
S< (L2 – Yx11) [2(ExH]
where
L = arc length (ft) between measurement points = 20 ft
Y = yield strength (psi) = 20 000 psi
E = Young’s modulus (psi) = 24×106 psi
H = tank height (ft) = 50 ft

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## Q10. API 653: settlementA lack of circularity at the top of a tank is typically a feature of:

Question 1 of 20

Now try these practice questions.

### 6.8 API 653 section 4: evaluation: practice questions (set 1)

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