1 gen 1674 anni - ground frame
Descrizione:
A term noted in bridge-building, descriptive of a timber frame that served as the foundation for a pillar. In 1674 the surveyors for Sowerby Bridge expressed their concern <i>in case the ground frames of the two pillars … be undermined</i> ... <i>the water being high</i> (HAS4/181).
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