Details
 

Researcher:	Alan Keiller Andrew Walker
Funded:	ODPM/BAA/BCSC/LUL/RSSB, through contract administered by CIRIA
Value to CWCT:	£45,000
Lead partner:	CWCT
Partner:	Independent Building Technology
Status:	Completed 2005

Introduction:

Large areas of glazing at height are increasingly a feature of modern architecture and, as the demands on building performance become more onerous, those on glazing have also increased. Whilst the glazing industry has responded with more sophisticated products, those involved in glass design and procurement face an array of glass configurations to choose from and various dilemmas in the final selection.

As a result, it is hardly surprising that there have been a number of high profile projects where there have been allegations or disputes regarding the glazing installations. Fortunately the cases have not resulted in major injuries but they highlight the potential for concerns about safety, adverse publicity, disruption if extensive remedial works are required, and expense. It is therefore important on each project for glass configurations to be selected carefully with all parties properly informed of the associated performance characteristics before the glass configurations are finalised.

Existing buildings and structures, especially those that are listed, present additional challenges. Refurbishment must often take place whilst retaining use of the building, including the glazed areas, and access for large numbers of people. Planning and heritage authorities may require listed buildings to retain their external and internal appearance, presenting challenges in using modern glazing techniques and materials, and fulfilling standards. Maintenance or replacement of such glazing presents further safety issues.

Objectives:

The project will produce guides for designers and clients. It will examine current guidance and risk assessment methods and gather experience and knowledge on current practice from practitioners and experts. Where possible failures, accidents and “near-misses” will be examined to obtain an understanding of the underlying cause. The potential effect of issues such as nickel sulphide inclusions, thermal stress, quality of installation, impact and wind or storm damage will be considered and guidance given. Information to guide designers and clients will be assembled and a risk assessment methodology developed to assist decision-making.

Outputs: