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
A-side and B-side two hit songs from different albums that were not originally released together, or were by completely different artists, altogether. These were often made for the jukebox, as one record with two popular songs on it would make more money, or to promote an artist to the fans of another. For example, in 1981 Kraftwerk released their new single "Computer Love" coupled with the B-side "The Model", from their 1978 LP "The Man-Machine". With synthpop increasingly dominating the UK charts, the single was re-released with the sides reversed. In early 1982 "The Model" reached number one. A "double A-side" is a