Any advice for dating an architect

Because of local, non-climatic causes of change of growth width, the chronologies around the country vary somewhat, and the best dating match is always obtained from a local regional master chronology.The dendro-date is thus the year in which the final ring of the specimen grew (the year in which the tree was felled, but not necessarily the year in which the building was constructed).

any advice for dating an architect-66

Oak is the species of prime interest and it is possible to date wood back to over 7,000 years with a precision, in appropriate circumstances, of a single year.

This is most impressive and makes dendrochronology the main dating method for structures containing oak timber.

Upon encountering a new site, the archaeologist immediately requires information about its age in order to set it in context with other sites.

In research into our heritage the conservationist or architect may be able to date the general period of a building he is working with from either the situation, materials of construction, type of timber joints or other stylistic features.

If this were so, the width of the annual growth rings would show changes in synchronism with the sunspot numbers.

He established a laboratory in the university of Arizona, at Tucson, to study tree-rings.The pattern of ring widths on a specimen taken from a building is matched, using a computer with a 'master chronology' often several centuries long for the particular area.This regional chronology will have been painstakingly built up from many thousands of measurements and by cross-matching many overlapping patterns of timbers.The youngest patterns are obtained from living trees, where the felling date of the final ring is known.Progressively older patterns are obtained from trees in recent buildings, older buildings, archaeological sites and ancient bog oaks.Year by year the trees throughout the region produce a similar pattern of wide and narrow rings in response to the weather changes.

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