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Watching Brief
Date 15 August 2011 - 27 August 2011
Event ID 965631
Category Recording
Type Watching Brief
Permalink http://canmore.org.uk/event/965631
HU 4751 4151 Two test trenches were excavated 15–27 August 2011 in the W bastion of Fort Charlotte. Structural cracks and voids had been noted within the N and W walls of the bastion and the two trenches were manually excavated to examine the composition of the wall and underlying ground, and to ascertain the cause of the problem. This work formed part of an on-going programme of investigation and repair at the fort, which has seen the examination and resolution of problem areas in the other bastions, mainly those to the N and E.
Previous excavations in the E bastion showed that shrinkage of the 17th-century earthwork and the resultant void between it and the 18th-century masonry walls had caused structural instability, severe cracking and partial collapse of the wall. This work in the W bastion showed that although a partial, but largely negligible, void existed in places between the masonry wall and the earthwork, the present structural issues originated in the later addition of poorly bonded masonry.
Archive: RCAHMS (intended)
Funder: Historic Scotland
Kirkdale Archaeology, 2011
