Stainless Steel in Bridges and Footbridges
Stainless Steel in Bridges and Footbridges
Stainless Steel in Bridges and Footbridges
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<strong>Sta<strong>in</strong>less</strong> <strong>Steel</strong> <strong>in</strong> <strong>Bridges</strong> <strong>and</strong> <strong>Footbridges</strong><br />
Suransuns Footbridge<br />
Suransuns Footbridge, Switzerl<strong>and</strong>,<br />
1999<br />
■IIII Stress ribbon footbridge <strong>in</strong> 2205<br />
(1.4462) duplex sta<strong>in</strong>less steel <strong>and</strong><br />
316L (1.4404) sta<strong>in</strong>less steel<br />
■IIII Corrosion resistance, slenderness<br />
<strong>and</strong> simplicity<br />
The Suransuns footbridge provides<br />
a cont<strong>in</strong>uation of the ancient Roman Via<br />
Mala <strong>in</strong> the form of a flexible, slender<br />
ribbon, connect<strong>in</strong>g the two sides of<br />
the gorge at the bottom of which flows<br />
the H<strong>in</strong>ter Rh<strong>in</strong>e: 40 m span. It consists of<br />
four 2205 (1.4462) duplex sta<strong>in</strong>less steel<br />
ribbons, jo<strong>in</strong>ed <strong>in</strong> pairs by means of straps<br />
<strong>in</strong> the same steel. A guardrail post,<br />
a 16 mm diameter 316L (1.4404) sta<strong>in</strong>less<br />
steel tube that also secures the natural<br />
stone deck<strong>in</strong>g through which it passes,<br />
is bolted to each strap; a flat welded to the<br />
upper end of the tubes forms the h<strong>and</strong>rail.<br />
Concrete abutments on each side of<br />
the gorge provide for anchorage <strong>and</strong><br />
tension<strong>in</strong>g of the structure by means of<br />
tension rods. The sta<strong>in</strong>less steel grades<br />
selected withst<strong>and</strong> salt spray from the<br />
nearby ma<strong>in</strong> road. The steel, stone <strong>and</strong><br />
concrete harmonise with the l<strong>and</strong>scape.<br />
Architect: Jürg Conzett<br />
Consult<strong>in</strong>g eng<strong>in</strong>eers: Conzett, Bronz<strong>in</strong>i,<br />
Gartmann AG<br />
<strong>Steel</strong> construction: Romei<br />
Contract<strong>in</strong>g authority: Vere<strong>in</strong> KulturRaum Via Mala<br />
Environmental<br />
considerations<br />
Environmental issues now constitute some<br />
of the parameters that must be considered <strong>in</strong><br />
any construction project, <strong>in</strong>clud<strong>in</strong>g bridges.<br />
Reduced consumption of materials<br />
The method of design<strong>in</strong>g <strong>and</strong> manufactur<strong>in</strong>g<br />
steel components – computer-aided design<br />
<strong>and</strong> workshop prefabrication – optimises<br />
the quantity of material used <strong>and</strong> generates<br />
a m<strong>in</strong>imum of waste which, moreover,<br />
is recovered <strong>and</strong> recycled. The high<br />
performance afforded by sta<strong>in</strong>less steel’s<br />
mechanical properties renders it a graceful,<br />
lightweight solution.<br />
Environmentally friendly<br />
<strong>Sta<strong>in</strong>less</strong> steel is an environmentally <strong>in</strong>ert<br />
material: <strong>in</strong> particular, it does not release<br />
any element that could harm its environment.<br />
Be<strong>in</strong>g rust-resistant, it does not require any<br />
special ma<strong>in</strong>tenance, unlike a pa<strong>in</strong>ted material,<br />
which must regularly be stripped <strong>and</strong><br />
repa<strong>in</strong>ted: two operations that are liable to<br />
pollute the rivers be<strong>in</strong>g crossed or the<br />
surround<strong>in</strong>g air.<br />
Recyclable <strong>and</strong> recycled<br />
All ArcelorMittal sta<strong>in</strong>less steels are produced<br />
through the electric-arc process, 100%<br />
from recycled scrap. A material that is totally<br />
recyclable at the end of its life, it is<br />
extensively recycled. All ArcelorMittal<br />
<strong>Sta<strong>in</strong>less</strong> <strong>Steel</strong> Europe, ArcelorMittal Industeel<br />
<strong>and</strong> ArcelorMittal <strong>Sta<strong>in</strong>less</strong> Tubes Europe<br />
production plants operate under the ISO<br />
14001 st<strong>and</strong>ard.
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