ISO/FDIS 21542:2011 Building construction - Accessibility and usability of the built environment

This International Standard specifies a range of requirements and recommendations for many of the elements of construction, assemblies, components and fittings which comprise the built environment. These requirements relate to the constructional aspects of access to buildings, to circulation within buildings, to egress from buildings in the normal course of events and evacuation in the event of an emergency. An informative annex is also included which deals with aspects of accessibility management in buildings.
This International Standard contains provisions with respect to features in the external environment directly concerned with access to a building or group of buildings from the edge of the relevant site boundary or between such groups of buildings within a common site. This International Standard does not deal with those elements of the external environment, such as public open spaces, whose function is self-contained and unrelated to the use of one specific building, nor does it deal with single family dwellings, other than those circulation spaces and fittings that are common to two or more such dwellings.
At present, consideration is being given to the development and publication of additional parts to this International Standard to deal with the types of external environments described above and single family dwellings.
For existing buildings there are options included in some paragraphs which appear as ‘‘exceptional considerations for existing buildings in developing countries’’ (see “Guidance on the Implications of the ISO Global Relevance Policy for CEN Standardization”, 2005) and as ‘‘exceptional considerations for existing buildings’’ where a lesser standard than expected in new developments is accepted on the grounds of technical and economic circumstances only.
The dimensions stated in this International Standard, relevant to the use of wheelchairs, are related to the footprint of commonly used wheelchair sizes and users. The footprint for a wheelchair within this International Standard is based on ISO 7176-5 and ISO/TR 13570-21) and is 800 mm wide and 1 300 mm long. For larger wheelchairs and scooters, dimensions will have to be considered accordingly.

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Creating Green Roadways

-The American Society of Civil Engineers estimates that we need to invest $2.2 trillion in federal, state, and local funds over the next five years to meet transportation requirements across the nation; this book fills an important gap in the extent literature for planners and designers who need to respond to that need
- Abundant case studies and illustrations guide the reader through planning a wide range of projects and the challenges they are likely to face
- James Sipes is a noted landscape architect, environmental planner, and writer with more than twenty-five years of professional experience encompassing a wide range of planning, design, research, and communication projects
Roads and parking lots in the United States cover more ground than the entire state of Georgia. And while proponents of sustainable transit often focus on getting people off the roads, they will remain at the heart of our transportation systems for the foreseeable future. In Creating Green Roadways, James and Matthew Sipes demonstrate that roads don’t have to be the enemy of sustainability: they can be designed to minimally impact the environment while improving quality of life.
The authors examine traditional, utilitarian methods of transportation planning that have resulted in a host of negative impacts: from urban sprawl and congestion to loss of community identity and excess air and water pollution. They offer a better approach—one that blends form and function. Creating Green Roadways covers topics including transportation policy, the basics of green road design, including an examination of complete streets, public involvement, road ecology, and the economics of sustainable roads. Case studies from metropolitan, suburban, and rural transportation projects around the country, along with numerous photographs, illustrate what makes a project successful.
The need for this information has never been greater, as more than thirty percent of America’s major roads are in poor or mediocre condition, more than a quarter of the nation’s bridges are structurally deficient or functionally obsolete, and congestion in communities of all sizes has never been worse. Creating Green Roadways offers a practical strategy for rethinking how we design, plan, and maintain our transportation infrastructure.