In 2000, a museum was opened at the Segedunum Roman Fort at the Eastern end of Hadrian's Wall at Wallsend, North Tyneside. A reconstructed Roman bath house and the location of the Fort's buildings can be observed from the tower shown below. The tower has several points of structural interest. Firstly, the viewing room is cantilevered from the tower. An arrangement of steel Universal Beams supports the viewing area. Viewing is enhanced by the 180 degrees window comprising a series of panes all held together by flexible jointing material and by a series of stainless steel fixings. These panes support their own self-weight and a wind load of 0.8kN/m2 (local 50 years return period 3 second wind gust = 42 m/sec). The observation deck has been likened to a Roman helmet and a ship's funnel, reflecting its location at the Roman Fort and at the present day Swan Hunter shipyard.
Segedunum is pronounced: Sej - eh - doon - um.
Note below how the two main steel beams cantilever from the tower and reduce their depth towards the tip of the cantilever (the front of the viewing room) where the bending moment reduces. Note also the secondary beams which support the viewing room floor and transmit the floor load to the main cantilever beams.
As well as the Fort, the viewing tower allows spectacular views over the Wallsend shipyards. Note below the glass panes projecting into the viewing area. These panes support the main glass units.
Below, note how the stainless steel connectors below locate each pane. In this case, the main panes are held in position by the secondary units shown in the previous picture