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Proceedings Paper

Thermal performance patterns on solid masonry exterior walls of historic buildings
Author(s): Antonio Colantonio
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Paper Abstract

The Parliamentary Precinct in Ottawa, Canada is comprised of a number of historic buildings that include the House of Commons, the Senate Chamber, the Parliamentary Library, the Peace Tower, and other buildings that provide offices for parliamentarians and their staff. The majority of these buildings have exterior walls that are made of solid masonry with thicknesses ranging between 400 mm and 800 mm. In some cases, special wall areas are more than 1200 mm thick and are comprised of various types of masonry materials. With winter design temperatures of minus 25 degrees Celsius, more than 170 cm of snowfall, and numerous thaws during the five month heating season, the exterior environmental conditions acting on the exterior wall assemblies of these historic buildings are severe enough to cause masonry and mortar deterioration wherever moisture accumulates during winter months. Infrared thermographic inspections were carried out to locate and identify the casual mechanisms of moisture accumulation within masonry wall assemblies. This paper discusses the types of thermal patterns produced by various mechanisms of heat loss and identifies some of the typical areas where possible masonry deterioration occurs. Knowledge gained from these extensive investigations is used to develop a non destructive test methodology to locate areas of freeze thaw damage as part of a predictive and preventative maintenance program to reduce preservation costs of these historical structures.

Paper Details

Date Published: 4 April 1997
PDF: 9 pages
Proc. SPIE 3056, Thermosense XIX: An International Conference on Thermal Sensing and Imaging Diagnostic Applications, (4 April 1997); doi: 10.1117/12.271628
Show Author Affiliations
Antonio Colantonio, Public Works & Government Services (Canada)

Published in SPIE Proceedings Vol. 3056:
Thermosense XIX: An International Conference on Thermal Sensing and Imaging Diagnostic Applications
Richard Norman Wurzbach; Douglas D. Burleigh, Editor(s)

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