Steel Monopole Octagonal Conical Pole AISC AS Standard Galvanized Industrial Steel Buildings With Internal Diaphragm

A monopole is only as reliable as what happens inside the shaft. This octagonal conical steel pole is detailed with internal diaphragms at every flange level, so bolt load from the joint is transferred into the shell through a stiffened ring rather than through the plate alone. The pole is engineered and documented against American and Australian practice, with AISC and AS criteria applied to member design, welding and galvanizing, and it is fabricated as an industrial steel building component that can be submitted for approval before a single plate is cut.

• Transfers flange bolt load into the pole wall, so the joint does not rely on local plate bending
• Holds the polygonal section in shape and limits ovalisation under bending and wind reversal
• Acts as a transverse stiffener, allowing a thinner shell than an unstiffened section of the same capacity
• Separates the interior into compartments, which also helps cable management and moisture control
• Positioned and welded at the shop, not fitted on site, so geometry is fixed before galvanizing
• Drain and vent provisions detailed so the diaphragm does not trap solution during galvanizing

1. Design calculation report stating the governing code, load case and utilisation
2. Shop drawings and approval drawings for review before production
3. Mill certificates traceable to heat number for each plate and section
4. Welding procedure specifications and welder qualifications where required
5. Non destructive testing records on request, by agreed percentage and method
6. Galvanizing coating thickness report against the nominated standard
7. Dimensional inspection report and trial assembly record for multi section poles
8. Third party inspection such as SGS, BV or TUV can be arranged

1. Material checked against certificate on arrival
2. Fit up, camber and diaphragm position verified before welding
3. Welds inspected to the agreed level and method
4. Dimensions measured after galvanizing, not before, because coating and heat can move a dimension
5. Flange flatness and hole alignment checked, then match marked and protected
6. Sections bundled by length with bolt sets crated separately

Any item that fails a gate is corrected before packing, not after arrival on site.

Height, section shape, plate thickness, diaphragm spacing, flange and bolt class, coating system and accessory layout are all set by the project. Typical reference ranges run from 10 m to 60 m in height with plate thickness from 4 mm to 14 mm, but these are starting points for sizing, not limits offered as a fixed product. Send your drawing or your site data and the proposal is prepared against your code.

Tell us the standard the project must satisfy, together with height, loading and quantity, and the design basis is confirmed before commercial discussion. Drawings in PDF, DWG or DXF are all acceptable.