The Fort York Footbridges in Toronto. The first Duplex Stainless-Steel bridges in North America

2019 ◽  
Author(s):  
Juan A. Sobrino
Keyword(s):  
Stainless Steel ◽  
North America ◽  
Duplex Stainless Steel ◽  
Structural Behaviour ◽  
The North ◽  
Pedestrian Bridges ◽  
Design Build ◽  
Design Proposal ◽  
The City ◽  
Historic Area

<p>In April 2015, the city of Toronto selected a proposal for the Fort York Pedestrian and Cycle Bridge project in a design-build competition. The project is located just west of the main downtown area of Toronto and provides a key link between Stanley Park to the north and the historic area of Fort York – the birth place of Toronto- crossing two rail corridors. Construction started in August 2016 and inauguration is expected by June 2019.</p><p>The project includes two pedestrian bridges. The awarded design proposal includes an unprecedented technical innovation in North America: the use of Duplex Stainless Steel on the entire structure. This pioneering use of a forefront technology provides premium aesthetics within a unique setting in addition to a safe and durable asset for the community. The structure has an extended life cycle, is more corrosion-resistant and requires less maintenance, reducing its overall cost.</p><p>Each bridge is supported by a single arch rib inclining at 18 º to provide a slender, transparent, and elegant impression. The two arches tilt in opposite direction, and the overall layout resembles a Yin &amp; Yang shape to emphasize both contrast and continuity, expressing a modern, understated and elegant aesthetic.</p><p>This paper discusses the concept, detailed design, structural behaviour and bridge erection.</p>

‘The Irishman's Prize’: Views of Canada from the British Press, 1760–1774

1985 ◽  
Vol 28 (3) ◽  
pp. 575-596 ◽  
Author(s):  
Philip Lawson
Keyword(s):  
North America ◽  
North American ◽  
New France ◽  
American Empire ◽  
French Army ◽  
The North ◽  
The Press ◽  
The Future ◽  
British Press ◽  
The City

This was how the Public Advertiser greeted the passage of the Quebec Act through parliament in June 1774. It was a remarkable transformation from the ecstasy evident in newspaper reports that greeted the fall of New France in 1760. As early as November 1759 the city of Nottingham singled out the North American campaign as the glorious core of British strategy. Its loyal address congratulated the king ‘particularly upon the defeat of the French army in Canada, and the taking of Quebec; an acquisition not less honourable to your majesty's forces, than destructive of the trade and commerce and power of France in North America’. What occurred in those fourteen years to produce such a stark revision of views on the conquest of New France? The answer can be found partly by surveying the English press for this period. During these years, treatment of Canadian issues in the press displayed quite distinct characteristics that revealed a whole range of attitudes and opinions on the place Canada held in the future of the North American empire. No consensus on this issue ever existed. Debate on Canada mirrored a wider discussion on the future of the polyglot empire acquired at the end of the Seven Years War in 1763. In ranged from the enthusiasm of officials at Westminster to spokesmen of a strain in English thinking that challenged the whole thrust of imperial policy to date.

Identification by Electron Microdiffraction of Intermetallic Phases in a Duplex Stainless Steel

1990 ◽  
Vol 48 (2) ◽  
pp. 494-495
Author(s):  
A. Redjaïmia ◽  
J.P. Morniroli ◽  
G. Metauer ◽  
M. Gantois
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Convergent Beam Electron Diffraction ◽  
Intermetallic Phases ◽  
Small Particles ◽  
Parallel Beam ◽  
Diffraction Patterns ◽  
Average Size ◽  
Convergent Beam ◽  
Electron Microdiffraction

2D and especially 3D symmetry information required to determine the crystal structure of four intermetallic phases present as small particles (average size in the range 100-500nm) in a Fe.22Cr.5Ni.3Mo.0.03C duplex stainless steel is not present in most Convergent Beam Electron Diffraction (CBED) patterns. Nevertheless it is possible to deduce many crystal features and to identify unambiguously these four phases by means of microdiffraction patterns obtained with a nearly parallel beam focused on a very small area (50-100nm).From examinations of the whole pattern reduced (RS) and full (FS) symmetries the 7 crystal systems and the 11 Laue classes are distinguished without ambiguity (1). By considering the shifts and the periodicity differences between the ZOLZ and FOLZ reflection nets on specific Zone Axis Patterns (ZAP) which depend on the crystal system, the centering type of the cell and the glide planes are simultaneously identified (2). This identification is easily done by comparisons with the corresponding simulated diffraction patterns.

Ras al Khaimah: further archaeological discoveries

Antiquity ◽  
1976 ◽  
Vol 50 (200) ◽  
pp. 216-222
Author(s):  
Beatrice De Cardi
Keyword(s):  
United Arab Emirates ◽  
The State ◽  
Focused Attention ◽  
North East ◽  
The North ◽  
History Of ◽  
The City

Ras a1 Khaimah is the most northerly of the seven states comprising the United Arab Emirates and its Ruler, H. H. Sheikh Saqr bin Mohammad al-Qasimi, is keenly interested in the history of the state and its people. Survey carried out there jointly with Dr D. B. Doe in 1968 had focused attention on the site of JuIfar which lies just north of the present town of Ras a1 Khaimah (de Cardi, 1971, 230-2). Julfar was in existence in Abbasid times and its importance as an entrep6t during the sixteenth and seventeenth centuries-the Portuguese Period-is reflected by the quantity and variety of imported wares to be found among the ruins of the city. Most of the sites discovered during the survey dated from that period but a group of cairns near Ghalilah and some long gabled graves in the Shimal area to the north-east of the date-groves behind Ras a1 Khaimah (map, FIG. I) clearly represented a more distant past.

The influence of submesoscale eddies on hydrochemical parameters and structural and functional characteristics of phytoplankton in the north-eastern part of the Black Sea

2019 ◽  
pp. 24-40
Author(s):  
Sergey B. Kuklev ◽  
Vladimir A. Silkin ◽  
Valeriy K. Chasovnikov ◽  
Andrey G. Zatsepin ◽  
Larisa A. Pautova ◽  
...  
Keyword(s):  
Anticyclonic Eddy ◽  
The Black Sea ◽  
Hydrochemical Parameters ◽  
North East ◽  
The North ◽  
Seasonal Thermocline ◽  
North Eastern ◽  
Quantitative Indicators ◽  
The City ◽  
North Eastern Part

On June 7, 2018, a sub-mesoscale anticyclonic eddy induced by the wind (north-east) was registered on the shelf in the area of the city of Gelendzhik. With the help of field multidisciplinary expedition ship surveys, it was shown that this eddy exists in the layer above the seasonal thermocline. At the periphery of the eddy weak variability of hydrochemical parameters and quantitative indicators of phytoplankton were recorded. The result of the formation of such eddy structure was a shift in the structure of phytoplankton – the annual observed coccolithophores bloom was not registered.

Sign in / Sign up

Export Citation Format

Share Document