Communication Tower

Communication Tower

Communication Tower for Mobile Networks, Microwave Links and Broadcast Antennas

Communication Tower is built to carry sector antennas, microwave dishes and feeder systems at the required height. We manufacture angle steel lattice towers, tubular towers and monopoles for ground and rooftop sites, with the structure matched to the antenna load and local design conditions.

Communication Tower is also called a telecom tower or signal tower. Most enquiries arrive with a required height, but height is not enough for us to design the steelwork. We need to know how many antennas will be fitted, their size, where they sit and whether more equipment may be added later. A single microwave dish and six sector antennas can place very different demands on two towers of the same height.

On a clear ground site, we normally start by looking at a four-leg angle steel tower. It is economical and leaves plenty of room for feeders and climbing access. If the compound is narrow, a three-leg or four-leg tubular tower may fit better. A monopole has the smallest footprint, but pulling feeders through the pole and working inside it is less convenient.

A guyed mast may look cheaper because it uses less steel. The saving is less convincing once the three or four anchor areas are included, especially where land is limited. Movement is another concern. We would not select a guyed mast for a microwave link until the permitted twist and deflection have been checked.

What we need before design

An antenna schedule and a simple elevation drawing are the best starting point. From these we can place the platforms, ladder and feeder supports without creating awkward cable routes. The same drawing can show the lightning rod, grounding connection and aviation lights. If future antennas are planned, tell us now. Adding reserve capacity during design is much easier than strengthening a finished tower.

Specifications

StructureAngle steel tower, three-leg or four-leg tubular tower, or monopole
Common heights20, 30, 40, 45, 50, 60 and 70 m; custom heights available
Main steelQ235B, Q355B or Q420 structural steel
Design standardsTIA/EIA-222-G/H, YD/T 5131, GB 50017, or EN 1993-3-1 as specified
Design wind speed28 to 60 m/s; wind pressure 0.4 to 1.2 kN/m²
Seismic designUp to intensity 8 when required
Ice thickness5 to 20 mm
Working temperature-40°C to +70°C
Vertical toleranceNot greater than 1/1000
Grounding resistance4 ohms or less when installed to the grounding design
Antenna platformsTwo to five levels; typically 6 to 12 antennas per level, subject to layout
Corrosion protectionHot-dip galvanizing to ISO 1461 when specified
WeldingAWS D1.1 or GB 50205 according to the project specification
Design service life50 years when the specified design, exposure and maintenance conditions are met

To prepare a quotation, we need the project location, tower height and antenna list. For microwave dishes, include the diameter and mounting height. For sector antennas, mark the quantity and platform levels.

Applications

Communication towers are used for mobile base stations, railway networks, microwave links and radio or television transmission. A rooftop tower may carry the same antennas as a ground tower, but the building connection has to be checked separately from a normal foundation.

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