The majority of the CBM assemblage recovered from the excavation at Bredons Norton came from contexts associated with the demolition of a possible bath house, of which elements of the hypocaust system were preserved in situ. Stacks of pilae that would have supported the floor survived, and from their alignment and spacing it was possible to calculate the sizes of the tiles that would have been used to span the space in between the pilae to support the floor. Traces of a mortar ring on the uppermost surviving pila tiles indicated that tubuli (box-flue tiles) tiles placed on end would have formed the central section of the stack (as at Darenth villa in Kent).

So from bags of frags recovered from site we can identify forms and fabrics, we can measure complete dimensions or estimate dimensions from fragment thicknesses, we can calculate sizes of tiles required to span spaces, floors, roofs or walls and we can estimate the total quantity of tile needed to build the original, and in doing so we can marvel at the engineering.


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