The authors have used the BERSAFE finite element computer program to model an equal diameter branch pipe intersection of mean diameter/thickness ratio 24.5. Previous results for internal pressure and the two in-plane bending moments are augmented by the present results for the two out-of-plane and the two twisting moment load categories. The predicted stresses are compared with results from tests on a 254 mm (10 inch) diameter welded branch junction, and also with the values from the current UK power piping code BS 806.
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