Structural Stability Statement Essay Example | Topics and Well Written Essays - 1500 words

Structural Stability Statement - testify ExampleThe weight of the tower is not distri excepted uniformly along the height of the Tower there is more material at the base than near the top.The Tower consists of lattice-work columns at distributively of the four corners, in which diagonals come to four elements, thus making stiff, but lightweight columns. Each primary element is affectually constitute of many sub elements. The overall structure has a plumb axis between the two columns, but, individually, each column has its own axis that follows the curve of the elements. These axes are idealized as parabolas.Four types of encumbrances act on the Tower Dead load, Live load, flex load and Thermal load. Dead load and the Wind load generate more forces as compared to the rest. Owing to its lattice structure, the tower is relatively lightweight and creates a force of only 4.5 kg/cm2 on the foundation.The bakshis force is one of the chief forces which create naiant scads over th e tower. It can be understood as a type of uniformly distributed load over the entire height of the tower. The overall bending hour from the horizontal wind load go out produce tension in one column and compression in the other. Exaggerated action under wind load is shownThe wind pressure on the Tower is stronger near the top than at the bottom, but the wind force is fairly uniform because the Tower is tapered. The wind force will create a higher vertical reception in the leeward sign and a lower vertical reaction in the windward support because the wind alone would create compression in the leeward support and tension in the windward support. In combination with the forces generated by dead load, the forces can be seen as stated in the diagram.ReactionsThe overall reactions at the base of the Tower are easily found from the wind and gravity loads. Overall vertical and horizontal reactions will develop to balance the respective loads. A moment reaction will also develop to bal ance the horizontal load applied through its centroid a distance l/2 from the support.The Internal ForcesThe simplest internal forces are the axial ones, which result from the vertical loads and reactions. They reach a maximum at the base of the Tower. These horizontal forces tend to push the Tower apart but are resisted by the connection all along the Tower and the ground. The columns of the Tower, under the effect of the vertical load, would slide apart if there were no connections between them. These connections, which lease been idealized as continuous, experience tension force equal to the horizontal forces they are resisting.The axial force will decrease with height as the vertical load and angle of inclination decrease. The second platform is subjected to the entire load of top and affection part of the tower. The forces at the higher points are lower as compared to the base and hence the higher members have a lesser amount of cross sectional area. The