January 2010
·
198 Reads
·
4 Citations
What is this page?
This page lists works of an author who doesn't have a ResearchGate profile or hasn't added the works to their profile yet. It is automatically generated from public (personal) data to further our legitimate goal of comprehensive and accurate scientific recordkeeping. If you are this author and want this page removed, please let us know.
Publications (20)
January 2010
·
70 Reads
·
4 Citations
This paper addresses seven issues which, if left unresolved, will hamper industry in its efforts to design and construct safe, comfortable and durable buildings. Four of the issues pertain predominantly to the performance of above-grade envelopes: 1) wet insulation 2) plastic insulation blown with CFCs 3) radiant barriers 4) air barriers. Three issues pertain specifically to below grade envelopes: 1) adfreezing and ice lensing 2) air and water leakage 3) condensation on concrete walls. Le présent document traite de sept problèmes qui, s'ils ne sont pas résolus, nuiront au travail de l'industrie qui s' efforce de concevoir et de construire des bâtiments sûrs, confortables et durables. Les quatre problèmes suivants sont reliés principalement à la performance des enveloppes hors-sol: 1) isolant saturé d'eau; 2) isolant plastique gonflé avec des chlorofluorcarbones (CFC); 3) inefficacité des écrans anti-rayonnement; 4) inefficacité des pare-air. Par ailleurs, les trois problèmes suivants touchent pré cisement les enveloppes sous le niveau du sol: 1) adhé rence due au gel et formation de lentilles de glace; 2) infiltrations d'eau et d'air; 3) condensation pendant le durcissement du béton. PRAC
January 2010
·
280 Reads
November 2002
·
10 Reads
oof overhangs, cornices, and drips on window sills. With increased understanding of structural design, and the eventual transition from load-bearing walls to curtain walls, thinner assemblies became possible, making more efficient use of structural material and space. The loss of mass and thickness, however, often led to rain penetration. Evolution of Wall Design for Controlling Rain Penetration Figure 1. Massive masonry construction Moisture transfer forces . kinetic energy of raindrops . surface tension . capillarity . gravity . air-pressure difference Relatively thin, single-wythe walls continue to be used in buildings in milder service environments, or in commercial or industrial buildings that need provide only limited environmental separation. In such situations, buildings can be designed to tolerate some moisture penetration from rainwater without adversely affecting the building fabric, the health or safety of the occupants, the intended use of the space, or the operation of
13 Reads
This paper addresses seven issues which, if left unresolved, will hamper industry in its efforts to design and construct safe, comfortable and durable buildings. Four of the issues pertain predominantly to the performance of above-grade envelopes: 1) wet insulation 2) plastic insulation blown with CFCs 3) radiant barriers 4) air barriers. Three issues pertain specifically to below grade envelopes: 1) adfreezing and ice lensing 2) air and water leakage 3) condensation on concrete walls. Le présent document traite de sept problèmes qui, s'ils ne sont pas résolus, nuiront au travail de l'industrie qui s' efforce de concevoir et de construire des bâtiments sûrs, confortables et durables. Les quatre problèmes suivants sont reliés principalement à la performance des enveloppes hors-sol: 1) isolant saturé d'eau; 2) isolant plastique gonflé avec des chlorofluorcarbones (CFC); 3) inefficacité des écrans anti-rayonnement; 4) inefficacité des pare-air. Par ailleurs, les trois problèmes suivants touchent pré cisement les enveloppes sous le niveau du sol: 1) adhé rence due au gel et formation de lentilles de glace; 2) infiltrations d'eau et d'air; 3) condensation pendant le durcissement du béton. PRAC
7 Reads
10 Reads
9 Reads
This paper discusses the design of correct roof details, strategies a designer can pursue to improve the potential for proper roof construction and a general approach to an integrated roof management program. PRAC
10 Reads
9 Reads
According to the rainscreen principle, the first line of defence minimizes rainwater passage toward a wall, while the second line deals with water that gets past the first. The design characteristics of both lines of defence must take into account the given environmental conditions. For the first line of defence that means reducing the moisture loads, having a watertight facade, and managing the forces (gravity, capillarity, etc.) that drive water through possible holes in the cladding. For the second line of defence, it means intercepting free and bound water and dissipating it. Selon le principe de l'écran pare-pluie, un premier niveau de protection permet de minimiser l'infiltration de la pluie, tandis qu'un second intercepte toute l'eau qui a franchi le premier niveau. Les caractéristiques conceptuelles de ces deux niveaux de protection doivent prendre en compte les conditions environnementales données. Pour le premier niveau, cela signifie réduire la charge d'humidité, avoir une façade étanche à l'eau et contrôler l'effet des forces (gravité, capillarité, etc.) qui drainent l'eau par les orifices éventuels dans le revêtement. Au second niveau, il faut intercepter l'eau gravitaire et l'eau liée, puis l'évacuer. PRAC
Citations (5)
... The use of annual rainfall and heating degree-days has been suggested as a simple method for defining the relative risk of moisture-related damage, following the principle that warm and moist environments are more conducive to deterioration than cold and/or dry environments. The use of this metric, as proposed by Cornick and Chown [18], differentiates between two climate zones in Canada. Scheffer's decay hazard index [19] is a more detailed approach to a similar principle by taking the sum of the product of factors related to the monthly average temperature and the number of rainy days for each month. ...
- Citing Article
- Full-text available
... Internationally there is a great awareness that building infiltration affects building thermal performance (Coldicutt, Coldicutt et al. 1978;Quirouette 1986;Biggs, Bennie et al. 1987;Biggs and Bennie 1988;Swinton, Brown et al. 1990;Rudd, Chandra et al. 1993;Willrath 1997;Guyon, Girault et al. 1999 ...
- Citing Article
January 2010
... Today's rain-screen barriers, however, may forego the drained and vented air space for a "second line of defence," such as a waterproof membrane, to ensure that rainwater that has penetrated past the cladding does not affect the rest of the assembly. However, for the rain-screen method to be effective, the cladding must minimize rainwater passage into the wall (Brown et al., 1999). ...
- Citing Article
... Many asset owners from all over the world have adopted the use of CMMSs for different types of infrastructure facilities, such as bridges, roads, airports, parking lots, and sewer pipes. The Building Envelope Life Cycle Asset Management BELCAM research project, spearheaded by the Institute of Research in Construction IRC of the National Research Council of Canada NRCC and the Real Property Services RPS branch of Public Works and Government Services Canada PWGSC, is attempting to provide building owners with technology-based tools that assist in making cost-effective maintenance decisions regarding their building stocks Brown et al. 1996. The initial domain of application of this project is low-slope roofing systems, because of their relative importance and risk of failure. ...
- Citing Article
- Full-text available
January 2010
... To prevent water drops from reaching the outer face of the wall, the chamber must be wide enough to deplete the kinetic energy of the drop and bring it to vertical direction [21]. The balance of external and internal pressures will reduce the forces pushing the water into the chamber [22]. ...
- Citing Article