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丂ㄒ尺ㄩ匚ㄒㄩ尺乇丂 imagen (2_丂ㄒ尺ㄩ匚ㄒㄩ尺乇丂 (𝕝𝕠𝕒𝕕𝕤 imagen (structures are…

- - - - the force of the wind
        
        mechanical forces that move machines
- - - - There are two many tipes of loads-permament and variable
        
        Fixed or permament loads dont vary over time.They always affect the structure in the same way
        
        variable loads are occasional and changeable
- - - - The characteristics of the loads (intesity ,direction ,trajetory and point of application
        
        The shape of the object bearing the loads
  - - - Forces try to stretch the objet they are acting upond .Opposing forces move outwards away from the body along the same trajectory but in opposite directions
        
        Bending:
        
        Forces try to bend a body. This stress acts on elements that are supported at their extremities and have a weight applied to them
        
        Compression:
        
        Forces try to flatten or compress a body . Opposing forces moive inwards towards one another along the same trajetory and in opposite directions
        
        ㄒㄖ尺丂丨ㄖ几 : forces try to twist a body . they try to trurn the ends of the body in oposite directions . example : a key opening a lock
        
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        ㄒㄖ尺丂丨ㄖ几