Abstract
Experimental stress analysis results on a series of eight branch-pipe intersections, and finite element results on a series of four branch junctions, have been used to assess the effect on elastic stress levels, arising from branch moment loading, of varying the run-pipe boundary conditions. It is shown that for branch/run-pipe diameter ratios of 0·5 or less boundary condition effects are not significant. Conversely, for junctions with larger diameter ratios, there are significant differences, depending on whether one or both run-pipe limbs are clamped. The implications of the results on plastic limit loads for branch-pipe junctions are discussed.
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