The Report describes a non-linear elastic analysis procedure for guyed masts or stacks of cylindrical cross-section. The analysis is an extension of original work by Poskitt and Livesley (1963) and accounts for behaviour due to lateral wind on ·the guy ropes and stack. Stack wind loads are described by a power law which represents current procedures described in SAA Loading Code Part 2 - Wind Forces, AS1170. Destabilising effects of the axial thrust in the stack are properly accounted for, and the guy ropes are represented as shallow parabolas with guy tensions therefore described by the customary cubic equation. Additional stack loading due to temperature effects and gravity are also included.
An investigation of the influence of wind direction upon system performance is described and conclusions are drawn regarding the choice of critical wind directions for design purposes.