Quotes: Recipe for Disaster

Recipe for Disaster Take one owner with capital budget; separate operating budget and ignore. Add one architect and heat until steamed. Expose three or more tenders, exchange parts, and trim extraneous portions. Select thinnest and discard remainder. Remove architect, save essence. Assemble subtrades, compare and trim extraneous portions. Select thinnest. Store subtrades in dark. Collect…

Extreme Climatic Events

Extreme Climatic Events Provide Important Insights For Resilient Design

Extreme climatic conditions are those falling in the upper or lower tenth percentile of the local period of record. North American hygrothermal datasets rely on such extremes in simulating climatic effects on building performance. Prior to 2012, WUFI employed customized 30-year hourly data provided by the U.S. Department of Energy for the 1961-1990 period of…

Performance Of Decay And Termite-Resistant Wood

In an earlier post, we reviewed standards and implications pertaining to mold-resistant construction materials (December 20, 2013).  We limited our discussion to some of the most widely used resistance tests performed under short-term, laboratory conditions.  Here, we take the discussion further by examining decay resistance tests for treated and untreated wood. Treated wood products provide an essential…

The 2012 Energy Code Necessitates Perfection

Adoption of the 2012 International Energy Code will require exterior continuous wall insulation for climate zones 6, 7, and 8.  When used in combination with cavity insulation, the minimum requirements include 20+5 or 13+10.  The first value pertains to cavity insulation whereas the second is continuous exterior insulation (CI).   Although comparable insulation strategies are also…

Redefining Building Failure

The phrase ‘building failure’ conjures images of fatal effects such as sudden collapse, material loss, and major structural defects.   But for decades the industry has embraced broader definitions – all representative of conditions that adversely affect the intended service life of components or assemblies.  For example, the Canadian Standards Association (S478-95) defines failure as the loss of performance…