Din ce găsesc pe net, înţeleg că "chain bond" se referă la consolidarea zidăriei cu bare de fier sau lanţuri (doar că aici s-ar folosi beton armat). O explicaţie interesantă a originii acestei practici şi a termenului tot pe proz, perechea FR-EN:

Commonly flat lengths of steel laid between courses of concrete blocks, and reinforcement bars inserted down the cells in blocks at corners, around doors and windows, to hold the masonry together in earthquakes.

Invented by the Romans, who brought their seismic design to parts of the world such as Mayenne in France where you don't get earthquakes, as a rule: they embedded iron ties between their stone blocks. After they got booted out, the local tribes broke the iron out of the joints to make iron tools, leaving holes at the ends of the stones left in place.