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Reducing floodwater ingress rates through an exterior masonry wall of a domestic building: A pilot investigation

David W. Beddoes (Construction and Property Research Centre, University of the West of England, Bristol, UK AND Drain Angel Ltd., Market Drayton, UK)
Colin Booth (Construction and Property Research Centre, University of the West of England, Bristol, UK)

Structural Survey

ISSN: 0263-080X

Article publication date: 13 July 2015

173

Abstract

Purpose

Experimental field test apparatus has been used to determine the inter-variability and intra-variability floodwater ingress rates of the masonry wall of a domestic building, before and after preparation with an improved surface treatment procedure. The purpose of this paper is to discuss this issue.

Design/methodology/approach

Replicated and repeated simulations of floodwater conditions (600 mm head) outside a building were created, before and after the wall was treated with a combination of mortar admixture and surface impregnation.

Findings

Untreated and treated floodwater ingress rates were 4.99 litres/hour (234.99 litres/hour/m2) and 1.74 litres/hour (81.90 litres/hour/m2), respectively, and display high intra-variability before treatment. These preliminary results indicate water penetration through masonry is linked to the initial rate of absorption of brick units and perceivably the workmanship of the bricklayer.

Originality/value

Reductions in floodwater penetration from outside a building, by the impregnation and admixture treatments of masonry walls, can be achieved to manageable levels. However, the target for rates of water ingress through permeable masonry of < 10 litres/hour/m2, to accord with values for kitemark products, still needs further work.

Keywords

Citation

Beddoes, D.W. and Booth, C. (2015), "Reducing floodwater ingress rates through an exterior masonry wall of a domestic building: A pilot investigation", Structural Survey, Vol. 33 No. 3, pp. 196-209. https://doi.org/10.1108/SS-01-2013-0003

Publisher

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Emerald Group Publishing Limited

Copyright © 2015, Emerald Group Publishing Limited

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