Mr. Alistair Chisholm from ARUP Edinburgh will continue the Edinburgh British Science Association’s Lecture Series with a talk on the design and construction of the Forth Replacement Crossing.
The Queensferry Crossing is the largest infrastructure project in Scotland in a generation. Currently on track to be completed in 2016, the suspension bridge across the Firth of Forth will replace the ageing Forth Road Bridge which forms a vital link between Edinburgh and the north Scotland. Design and construction of the new cable-stayed bridge presents some exciting engineering challenges, which next month’s British Science Association Lecture will discuss.
Construction of the Queensferry Crossing began in 2011 when it was realised the current Forth Road Bridge would not last even half of its 120 year design life. Due to corrosion mechanisms that were poorly understood at the time of the Forth Bridge’s construction in the 1960s and larger volumes of traffic using the bridge than was planned meant a new bridge was needed. The Queensferry Crossing will use the newest materials technology and engineering techniques so that it will be as resilient to climate and deterioration as possible.
The cable-stay design of the new bridge is also an ambitious project in itself. The structure’s visual mass will be minimal - it will consist of just three slender towers and an array of cables supporting the bridge deck. Maintaining this minimalist design for the entire 2.7 km length of the bridge is not an easy task requires a careful balancing of forces to keep the load on the towers as small as possible, special cable design to ensure the bridge to remains stiff enough to safely carry a road and many other sophisticated engineering techniques.
Mr. Alistair Chisholm who is part of the engineering and design firm working on the Queensferry Crossing will give a public lecture entitled ‘Design and Construction of the Forth Replacement Crossing’ on Monday 3rd March at 7:30pm at the Quaker Meeting house. The lecture is hosted by the Edinburgh and SE Scotland British Science Association and is FREE and open to all. You can book your FREE place here, or find out about other lectures in the series here.
This article was written by Ellen Young for the Edinburgh and South East Branch of the British Science Association.