Telecoms ยท 4 min read
What an extension changes
A taller mast catches more wind, carries more equipment higher up and applies larger forces to its base, its guys and its foundations. The original design may or may not have allowed for that.
What has to be checked
- Original design. Drawings and calculations, and whether an extension was allowed for.
- Structural condition. Corrosion, damaged members, loose or missing bolts.
- Foundations and anchors. Whether they can take the higher loads.
- Guy system. For guyed masts: guy sizes, tensions and anchor capacity, and whether new guy levels are needed.
- Equipment loading. Existing and planned antennas and dishes, and their positions.
- Site conditions and approvals. Wind exposure, plus any permissions the change requires.
Who decides
A competent structural engineer must assess the mast and approve the extension before any work starts. If the existing structure cannot take the extra load, strengthening or replacement may be more economical.
What to send with an enquiry
- Current and required height
- Mast type and any drawings you have
- Photos of the base, anchors and top section
- Existing and planned equipment
- Site location and access