Daily, people pass through buildings without much thought regarding the effort needed to open a door. However, many of those in wheelchairs, pushing baby strollers, or carrying multiple packages can sometimes find things more challenging. With a power-operated door, removing the barrier for entry is as simple as tapping a button.
From towering skylines and massive dams to modern bridges and centuries-old temples, concrete structures are the basis for much of civilization’s infrastructure and its physical development. Concrete is used worldwide, more than any other manufactured product—twice as much of it is used throughout the world than all other building materials combined. Each year, approximately four tonnes are used for every one of the nearly seven billion people on Earth. (This information comes from the 2009 U.S. Geological Survey).
Public-private partnerships (P3s) have gained widespread acceptance over the last number of years as an effective option for procuring and delivering public infrastructure. The Canadian federal and provincial P3 marketplaces have, broadly speaking, become mature and now boast numerous sophisticated and experienced public-sector and private-sector players.
One of the greatest sources of energy loss in a building is through an open door. For years, facilities have been losing substantial amounts of energy and money, while occupants suffer the discomfort of cold drafts blasting in when the doors are open. What some people do not know is there is a technology on the market that can create a significant energy-efficient seal on open doors by simply re-circulating facility air across the doorway.
Some would argue specification writers are an endangered species. Over the years, it has become apparent fewer people are showing interest in this area of design, leaving architects and engineers (or the technicians working for them) attempting to write specifications themselves in-house.
The 2010 editions of the National Model Construction Codes—the National Building Code of Canada (NBC), the National Fire Code of Canada (NFC), and the National Plumbing Code of Canada (NPC)—were released last November. Published by the National Research Council Institute for Research in Construction (NRC-IRC), the new codes contain about 800 technical changes.
Construction site theft, vandalism, and arson on commercial and residential building projects comprise numerous serious problems for contractors. According to insurers Zurich Canada, the country’s builders suffer an annual loss of $46 million because of theft and damage to construction sites. Pre-emptive action against construction site crime is critical to mitigate the significant risk presented by current crime rates.
Sprayed polyurethane foam (SPF) is gaining global recognition because it provides superior insulating properties by creating a tight building envelope that reduces unwanted air infiltration. Achieving a tight building envelope is the foundation for an energy-efficient building. According to Natural Resources Canada (NRCAN), “air leakage represents 25 to 40 per cent of the heat lost from an older home.” Creating a tight, well-insulated building envelope by insulating and air-sealing with SPF will reduce energy bills significantly when compared to traditionally insulated buildings.
With respect to architectural trim, columns, pergolas, trellises, and other ornaments, the last decade has seen growing interest in alternatives to traditional wood products for residential projects. With the costs of construction and materials steadily climbing, and the long-term performance of components made from increasingly inferior wood continually being called into question, the attention of a growing number of design professionals has steadily shifted to cellular polyvinyl chloride (PVC).
Moulded expanded polystyrene (EPS) is an air-filled, closed-cell, rigid foam plastic that does not contain any hydrochlorofluorocarbons (HCFCs) or hydrofluorocarbons (HFCs) as blowing agents. The closed-cell structure of EPS insulation provides constant thermal resistance, is dimensionally stable and non-corrosive, provides excellent mechanical properties, and can be recycled where facilities exist.
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