drumming
A kind of bridging consisting of a series of small diagonal braces set in rows transversely to the timbers. The braces are generally of light scantling, about 2 inches by 3 inches, or somewhat less, and, in floors, extended from the top of one beam to the bottom of the next, crossing each other at the middle… (Sturgis, 1900)
cross bridging, dwanging, strutting, herringbone strutting