Althea Draper Sep 1, 2021:

At first when you said it was reinforced concrete beams in a roof, I thought that this might be referring to a breakdown of the nibs on the ends of reinforced concrete dapped-end beams (see 1st, 2nd and 3rd refs) but after looking into it, the French refs look more like a lip along the length of the beams (see 4th (page 242), 5th (page 200), 6th refs).
https://www.pci.org/PCI_Docs/Publications/PCI Journal/1979/N...
https://www.researchgate.net/publication/330026072_Reinforce...
https://www.rector.fr/sites/default/files/styles/systeme_gal...
https://www.academia.edu/25663668/Renaudhenri_ouvragesenbton...
https://www.google.co.uk/books/edition/Système_international...
https://www.rector.fr/sites/default/files/media/file/poutpla...
Do you have any photos or more context?

Jane RM (asker) Sep 1, 2021:

they are "poutres support de toiture ". there has been a "rupture de l’extrémité des poutres entrainant un décollement de l’enrobage des armatures sur le nez de la console". I'm struggling with both rupture and becquet.

Tony M Sep 1, 2021:

@ Asker What KIND of 'beam' is this? Are we to assume it is a reinforced concrete beam? A little more of the wider context might make it easier to see what is gong on here.