has been under continuous development since the first edition of the API RP 2A in 1969. In the 3rd edition of API RP2A, issued in 1972, some simple recommendations were introduced based on punching shear principles (Marshall, 1974). In the 4 Edition, factors were introduced to allow for ...
That 22nd Edition is planned to be the last edition of API RP 2A-WSD. API RP 2A was due for a revision. Generally, API standards are reviewed and revised, reaffirmed, or withdrawn at least every five years. A complete and thorough review of the document was long overdue. The 21st ...