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GEO Report No. 250
Report No. : GEO Report No. 250

Report Title : Review of the 3 June 2007 Failure of A Masonry Retaining Wall on Hillside adjacent to No. 84 Peak Road (2010), 54 p.

Author : Fugro Scott Wilson Joint Venture

Abstract

This report presents the findings of a review of a masonry retaining wall failure (Incident No. 2007/06/0020) that occurred on 3 June 2007 on the hillside adjacent to No. 84 Peak Road. The failure involved the detachment of six large stone masonry blocks (with maximum dimensions of 0.47 m by 0.3 m by 0.3 m), and about 10 small stone masonry blocks (with dimensions of < 0.1 m by 0.1 m by 0.1 m) from the northwest portion of the retaining wall. Some of the detached stone masonry blocks were deposited on the hillside and some came to rest on Peak Road, resulting in the temporary closure of one lane of Peak Road. No casualties were reported as a result of the failure.

The key objectives of the review were to document the facts about the failure, the site history and pertinent observations. The scope of the review does not include any ground investigation or detailed diagnosis of the causes of the incident. Recommendations for follow-up actions are reported separately.


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