Guyed support mast for aerial - has tubular concrete shaft, of constant cross=section and wall thickness

摘要

The antenna support, mast has a shaft made of concrete. This can be tubular, and round or polygonal, esp. square in cross-section. This cross-section is pref. of constant dimensions and/or wall thickness over its whole height. This is compact and uses little material, but affords a high degree of stability, with less deformation under wind loading than a steel shaft, and guying cables can be taut and set at very steep angle.