View all text of Subjgrp 83 [§ 154.444 - § 154.449]
§ 154.447 - Allowable stress.
(a) An independent tank type B designed from bodies of revolution must have allowable stresses
3
3 See Appendix B for stress analyses definitions.
σ4 See Appendix A for equivalent stress.
σTable 2—Values for Stress Factors
Nickel steel and carbon manganese steel values | Austenitic steel values | Aluminum alloy values | Stress factors: | A | 4.0 | 4.0 | 4.0 | B | 2.0 | 1.6 | 1.5 | C | 3.0 | 3.0 | 3.0 | D | 1.5 | 1.5 | 1.5 |
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(b) An independent tank type B designed from plane surfaces must have allowable stresses specially approved by the Commandant (CG-ENG).