federation internationale du beton (fib)
International federation for structural concrete
Case Postale 88, 1015 Lausanne, Switzerland
Phone +41 21 693 2747 * Fax +41 21 693 6245
fib@epfl.ch * www.fib-international.org



For immediate release

Press contact:  Laura Thommen-Vidale, Editor
Email:  laura.thommen-vidale@epfl.ch
Tel.:  +41 21 693 2747
Fax:  +41 21 693 6245
Press area: www.fib-international.org/press

Lausanne, 1 February 2005
ref. PR05001

fib Bulletin 30: Acceptance of stay cable systems using prestressing steels

This fib Recommendation, published in January 2005, gives technical guidelines regarding design, testing, acceptance, installation, qualification, inspection and maintenance of stay cable systems using prestressing steels (strands, wires or bars) as tensile elements, which can be applied internationally. This Recommendation is applicable for cable-stayed bridges and other suspended structures such as roofs. It may also be used for hangers in arch structures and as suspension cables, as appropriate.

Bulletin 30 has been formulated by an international working group comprising more than 20 experts from administrative authorities, universities, laboratories, owners, structural designers, suppliers of prestressing steels and stay cable suppliers. The text has been written to cover the best construction practices around the world, and to provide material specifications that are considered to be the most advanced available at the time of preparing this text. For ease of use (for client, designer and cable supplier), the complex content has been arranged thematically according to the system components into chapters focusing on performance characteristics, requirements and acceptance criteria.

It does not cover the technology of stay cables whose tensile elements are ropes, locked-coil cables, etc. or which consist of composite materials. Nevertheless, in many cases the specified performance criteria may also be applicable to these systems, although numerical values given for the acceptance criteria may need to be adjusted. For these systems it has been difficult to provide multiple protective layers similar to those specified for stay cables made from prestressing steel and therefore, the quality of corrosion protection may not be equivalent.

While extradosed cables have similarities with stay cables, generally agreed design and system acceptance criteria are not yet available and therefore, this type of cable is not covered.

Pages: 80
Price: CHF 90 (non-member price)
ISBN 2-88394-070-3
To order this Bulletin, use the order form at www.fib-international.org/publications/order/.

###

Note: On request, the text of this press release can be provided in French or German