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| Uniform Wind Speed
This design uses the same wind load for the entire height of the structure. Since these are "design" wind loads, there is a safety factor included of minimum 1.25. Be careful when evaluating proposals. One easy way to determine if the designs are similar from one offer to another, is to compare the base reactions of the tower. The reactions should be similar if the two structures have three legs, or slightly higher for the three leg tower when comparing a three leg tower to a four leg tower. Basic Tower Fundamentals This section provides technical information on structural steel towers and compares the differences between the two most popular tower designs and why round member triangular towers are more efficient than angle leg square towers. Environmental Effects of Tower Design
Fig.1 Fig. 2 Wind flows smoothly around a round object (Fig. 1). Wind creates more force and turbulence around a flat object (Fig 2). Ice buildup is greater on flat objects than on round objects because there is more surface area (fig 3).
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