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Cheap is not economical

Cheap is not economical Editorial Nowadays bridges must fulfill ending with dismantling and potential re-use or recycling, numerous, but also different including the users’ costs. Taking all this into account steel tasks. While only some of and composite bridges are significantly at an advantage. them are intended to be a Modern steel products provide for lower construction landmark, their purpose is of- costs and less maintenance effort. One example is self- ten only being able to bring weathering steel. Almost forgotten in some countries, this people from one side to the steel lasts for a lifetime without any maintenance. No ad- other side – simply and func- ditional corrosion protection is required. The ECCS AC3 tionally. As a result, the costs Bridge Committee is currently working on updated recom- of achieving this goal are key. mendations for the use of self-weathering steel in bridge Thus, in many countries to- construction. Additionally, the nominated projects for the th day’s awarding practice for 5 European Steel Bridge Awards show that steel bridges bridge structures only favors not only enable large spans, durability, lightness, aesthetics Dr.-Ing. Dennis the cheapest bridge design. and individual designs, but also a conversion or reinforce- Rademacher Unfortunately, essentially ment after use over several generations. This sometimes only the construction costs are calculated. Follow-up costs becomes necessary when user requirements, such as traffic such as maintenance or replacements of various bridge situations, change. components, however, are often neglected. The effects on Be inspired by the variety of products and projects traffic and the associated negative consequences for soci- with modern construction and production methods pre- ety due to comparatively long construction periods and sented in this issue, even if some of them might have been short lifecycles of concrete bridges are not considered at not the cheapest solution in terms of pure construction all. But we all – the bridge users – must bear exactly these costs. Think also about the future and not only about the costs later. This is already noticeable today in some West- purse in the present. A holistic approach can help to find ern European countries. Many cheap concrete bridges the most economical solution. must be repaired or even renewed long before they reach their design lifetime. This leads to uneconomical conges- tion due to restrictions on availability. New methods of holistic consideration are now easily applicable. Intuitively usable software like the SBRI+ tool allows the holistic view of a bridge structure with all costs Dr.-Ing. Dennis Rademacher over the lifetime, starting from construction, service and Chairman ECCS AC3 Bridge Committee 178 Steel Construction 11 (2018), No. 3 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Steel Construction: Design and Research Wiley

Cheap is not economical

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Publisher
Wiley
Copyright
"© 2018 Ernst & Sohn Verlag für Architektur und technische Wissenschaften GmbH & Co. KG, Berlin"
ISSN
1867-0520
eISSN
1867-0539
DOI
10.1002/stco.201870304
Publisher site
See Article on Publisher Site

Abstract

Editorial Nowadays bridges must fulfill ending with dismantling and potential re-use or recycling, numerous, but also different including the users’ costs. Taking all this into account steel tasks. While only some of and composite bridges are significantly at an advantage. them are intended to be a Modern steel products provide for lower construction landmark, their purpose is of- costs and less maintenance effort. One example is self- ten only being able to bring weathering steel. Almost forgotten in some countries, this people from one side to the steel lasts for a lifetime without any maintenance. No ad- other side – simply and func- ditional corrosion protection is required. The ECCS AC3 tionally. As a result, the costs Bridge Committee is currently working on updated recom- of achieving this goal are key. mendations for the use of self-weathering steel in bridge Thus, in many countries to- construction. Additionally, the nominated projects for the th day’s awarding practice for 5 European Steel Bridge Awards show that steel bridges bridge structures only favors not only enable large spans, durability, lightness, aesthetics Dr.-Ing. Dennis the cheapest bridge design. and individual designs, but also a conversion or reinforce- Rademacher Unfortunately, essentially ment after use over several generations. This sometimes only the construction costs are calculated. Follow-up costs becomes necessary when user requirements, such as traffic such as maintenance or replacements of various bridge situations, change. components, however, are often neglected. The effects on Be inspired by the variety of products and projects traffic and the associated negative consequences for soci- with modern construction and production methods pre- ety due to comparatively long construction periods and sented in this issue, even if some of them might have been short lifecycles of concrete bridges are not considered at not the cheapest solution in terms of pure construction all. But we all – the bridge users – must bear exactly these costs. Think also about the future and not only about the costs later. This is already noticeable today in some West- purse in the present. A holistic approach can help to find ern European countries. Many cheap concrete bridges the most economical solution. must be repaired or even renewed long before they reach their design lifetime. This leads to uneconomical conges- tion due to restrictions on availability. New methods of holistic consideration are now easily applicable. Intuitively usable software like the SBRI+ tool allows the holistic view of a bridge structure with all costs Dr.-Ing. Dennis Rademacher over the lifetime, starting from construction, service and Chairman ECCS AC3 Bridge Committee 178 Steel Construction 11 (2018), No. 3

Journal

Steel Construction: Design and ResearchWiley

Published: Aug 1, 2018

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