Flitch beam wooden beams, and have been largely supplanted by more recent technology. “Flitch” originally referred to a slab of bacon, which was cut into strips lengthwise. Similarly, a wooden beam was flitched by cutting it lengthwise; one half was then rotated 180 degrees both longitudinally and laterally to ensure that any defects were separated. In the 18 century, before the availability of steel beams, pine beams were flitched with hardwood such as oak. With the availability of affordable steel, flitch beams became a way to strengthen long-span wooden beams cost-effectively while taking up less space than solid wood. An 1883 article
Flitch of bacon custom have been more that are unknown (among the possible ones there are Montagu Burgoyne and his wife Elizabeth). Three are known prior to the dissolution of the monasteries from the records of the house of Sir Richard St George, and a further three awards are known from the records of the manor court at Dunmow now in the British Museum. There was a long gap after the dissolution, but the tradition was revived by Sir Thomas May in 1701 when he became the owner of the Priory. There was an attempt made to claim the flitch on 12 June 1772