Flitch of bacon custom in the 13th century there are some who would date it to earlier Norman or Saxon times, one suggested date being 1104, the founding of the Little Dunmow Priory. This is partly because the flitch of Dunmow seems to have already been common knowledge in very early works such as the prologue to Chaucer's "Wife of Bath" and also in the "Visions of Pierce Plowman" by William Langland. Some would also read passages in the "Anglo-Saxon Chronicle" as alluding to the Dunmow flitch. It is possible that the "flitch of bacon" custom was at one time quite widespread. There was
Flitch beam construction. Glulam beams were used to support the second floor and the roof. This allowed the appearance of wooden columns, while providing the necessary strength. The method for calculating the size of a flitch beam to be used in construction is straightforward, using the transformed-section method. The steel piece of the beams is imagined to be an equivalently flexible (although much thicker) piece of wood. This allows the elasticity of the entire beam to be calculated as if it were entirely made up of wood. There is modest business activity involving flitch beams with The Timber Research and Development Association