New Standard from Last Update.

1. SCOPE

1.1 This standard covers the structural design for static and dynamic wind forces, fabrication, and erection of all types of isolated steel towers including communication towers, antenna supporting structures and flood lighting structures, consisting of:

a) Self-supporting lattice towers,

b) Guyed masts, and

c) Steel monopoles.

1.2 The requirements of number, height, size, structural layout, location and spacing of towers arising out of mobile network planning considerations are not covered in this standard.

1.3 This standard also does not deal with the packing material, antenna types, spacing of towers from buildings or human habitat and the method of testing the performance requirements of communication structures.

1.4 This standard does not apply to structures with unconventional shapes, unusual locations, and materials other than steel as well as abnormal environmental conditions that have not been covered in this standard. Special investigations are necessary in such cases to establish loads and design procedures.

1.5 In the cases of structures with unsymmetrical geometry, the checking may have to be carried out for special wind load effects that are not covered in this standard.

2. REFERENCES

The standards given in Annex A contain provisions, which through references in this text, constitute provisions of this standard. All standards are subjected to revision, and parties to agreement based on this standard are encouraged to apply the most recent edition of the standard indicated.