US historic Skyscraper McAlpine Stadium Lecture 11 - Bending. Bahrain Whitley Bay Station Roof Richmond Station Roof Lecture 12 - Special Bridges. First, here is the comparison between a truss, a cantilever and an arch for the relatively large 100m span, carrying typical highway loading. Below is the way in which the Swing Bridge works when in the open and closed positions. The picture below, taken in late 1928 shows how the partly completed arch of the Tyne Bridge was supported during its construction.
Every object has mass.
When mass exists in a gravitational field, the body s mass causes it to have weight, which is a force. If the surface disappeared, the block would accelerate at that value. Usually, the first thing we need to do when analysing a structure is calculate reactions - without reactions, there would be no forces in structures. 5kN. Therefore, a structural engineer sees this structure as in the next diagram as far as the structure is concerned, there is no difference between loads and reactions. Select an arrangement of members which can be connected together practically.