Many zoning codes establish large fall zones for wireless towers and monopoles; e.g. equal to the height to three times the height of the tower. However, I've seldom seen fall zone requirements for similar monopole structures such as high tension transmission line towers, signs, billboards, and the like. I've also only heard of a few cases where monopoles have collapsed.
Large fall zones seem like a waste of land, especially when a community is trying to increase development density. Are huge fall zones really necessary for wireless towers? Are there alternatives?