Data & Fiber

Overview

Lemac Technologies is a Level 2 B-BBEE contributor with 51% Black shareholding of which 39% is Black Female owned. 49% Of the shares are white owned.

The company has a combined experience of 38 years in the Construction and Telecommunication industry.

Pre-Construction

The detection and identification of underground services has become a critical function prior to any invasive or civil engineering groundwork. As infrastructure networks grow, so does the density of cables, pipes and other services. A reality is that a large proportion of underground services are not appropriately surveyed and recorded. In many instances, this information was recorded, but had not been retained or is not available.

Subterranean features are mapped and detected using a variety of equipment which is dictated by site and equipment constrains.

The equipment used for this:

• Metal detectors
• Ground Penetrating Radar (GPR)

Construction

Ducting and Trenching is the traditional method of laying optical fibres and is still preferred in south Africa. This involves creating a trench through manual or mechanised soil excavation. Equipment used for this:

• TLB
• Excavator
• Bobcat
• Fully kitted rigs with Shovels, Picks and Compactors

Horizontal Directional Drilling (HDD) is also referred to as Directional boring, and is a trenchless technique used for installing conduits, underground pipes and cables. For this type of installation, a drilling rig that is launched from the surface is used to create a shallow arc along a predefined path. The impact on surrounding areas using this method is minimal and it is therefore preferred when excavating or trenching is not practical. It can be used for numerous soil conditions and jobs including landscape, road and river crossings.

Fibre Installation

A cable blowing machine is a machine used to fit fibre optic cables into telecommunication ducts and microducts with the use of compressed air. The blowing operation floats the cable on a cushion of air, minimising the contact points with the duct, reducing the friction that would be created by pulling the fibre through the duct.

Fibre splicing is the process of permanently joining two fibres together. Fusion splicing provides the most reliable joint between two fibres. Fusion splicing is done by a fusion splicer machine.