Wind effects on high rise buildings.

The wind effects on high rise buildings were studied by finding and reading books, articles and studying equations. This was done to calculate the first natural frequency of high rise buildings, wind induced acceleration on high rise buildings and how the comfort criteria of acceleration performing on high rise buildings acts on human bodies living in the building. The buildings that were studied are Turning Torso in Malmö, Sweden and briefly Smáratorg Tower in Kópavogur, Iceland. The information on the building Turning Torso is from 17. March 2000 (this is not the final dimension on the building it was later strengthened due to wind load). This information was then used to calculate the first natural frequency, wind induced acceleration and compared to the data that engineers at Turning Torso worked with. The most important results were that there will be excessive movement in the top floors of Turning Torso so that sensitive people may perceive motion and hanging objects may move. For Smáratorg Tower the movement is so excessive that majority of people perceive motion. The aim was to make a diploma work that can be used in practice, which can be a guide to design high rise buildings due to wind effects in the early states of development