Abstract
Abstract An Australian Standard (AS 3995) has been published for the design of communication lattice towers and masts in limit states format. As a background study for this project, a reliability analysis has been carried out to calibrate the design process for lattice towers proposed in the new Standard to the current Australian Telecom design practice. Probabilistic models have been established for (a) the wind loads on towers, and (b) the strengths of the major components of the towers. The results indicate that the reliability indices for Australian communication towers are about the same as those for American transmission line towers, and are lower than those for Australian steel building components designed to AS 4100. The implications of the calibration results on the assessment of existing towers are also discussed.
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