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About Earthworks & Site Preparation
Earthworks and site preparation is the stage nobody sees once a job is finished, but it decides whether everything built afterwards lasts. It covers clearing a site, cutting high ground and filling low ground, shaping the sub-grade to the right levels and falls, and compacting it in layers so it can carry a road, a parking area, a building pad or a paved surface without moving. We do this stage for private roads, parking areas, building pads, sports courts and paved or tarred surfaces across Germiston, the East Rand and Johannesburg, using our own excavators, TLBs, graders and rollers rather than plant hired in for the day. If your site is uneven, holds water, was never properly prepared, or a previous contractor's surface has already failed because the ground under it moved, we assess it and quote the earthworks in writing before anything starts.
What's Included
- Site assessed and test holes dug before any quote
- Existing levels, falls and drainage surveyed
- Topsoil stripped and site cleared where needed
- Bulk excavation with our own excavators and TLBs
- High ground cut to fill low ground on site
- Fill placed and compacted in controlled layers
- Sub-grade compacted to density the surface needs
- Falls and camber set for stormwater from the start
Our Process
- 1
Assess the Site
We walk the property, check existing levels and falls, and where relevant dig test holes to see what the ground is made of. That tells us whether the job is straightforward cut and fill or needs unsuitable material removed and replaced, so the quote reflects what the site actually needs.
- 2
Clear, Cut and Fill
Where a site needs clearing, we strip topsoil and vegetation and excavate to the design levels using our own excavators and TLBs. We cut high ground and use that material to build up low ground, placing fill in layers rather than dumping it, and bring in material only where the site can't generate enough on its own.
- 3
Compact in Layers
We compact the sub-grade and any fill in controlled layers with our own vibratory roller and plate compactors, working each layer to the density the intended surface calls for before the next one goes down. This is the stage that determines whether everything built afterwards lasts.
- 4
Set Falls and Drainage
We set the falls and camber during the earthworks stage so stormwater has somewhere to go once the site is built on. Where the site needs a formal outlet, we tie the earthworks into a water channel, side drain or existing stormwater system as part of the same job.
Project Gallery
Earthworks & Site Preparation FAQ
What does earthworks and site preparation include?
It covers everything that gets a site ready to be built on: clearing vegetation and topsoil where needed, cutting high ground and filling low ground to the correct levels, shaping the site to the right falls, and compacting the sub-grade in layers so it can carry a road, parking area, building pad or paved surface without settling. On Tarworks jobs it also includes setting up the drainage fall from the start, so the site is not left holding water once the earthworks are done.
What's the difference between earthworks and excavation?
Excavation is one part of earthworks, specifically the digging out and removal or relocation of material. Earthworks is the broader stage that includes excavation alongside filling, shaping, grading and compaction, all done together so the finished ground is level, stable and correctly drained rather than just dug out. A job can involve heavy excavation with little filling, or the reverse, depending on the site's existing levels.
How long does site preparation take before construction can start?
It depends entirely on the size of the site and its existing condition. A small, mostly level site with good drainage can be cut, filled and compacted in a matter of days. A larger site, or one with soft ground that needs unsuitable material removed and replaced, takes longer because each fill layer has to be compacted properly before the next one goes down, and that cannot be rushed without risking the whole job. We give a programme in writing once we have assessed the site.
What is cut and fill in earthworks?
Cut and fill is the process of removing soil from higher parts of a site (the cut) and using it to raise the lower parts (the fill), so the ground ends up at the levels and falls the design needs. Fill is not simply dumped; it is placed and compacted in layers so it does not settle unevenly once it carries traffic or a structure. Balancing cut against fill on site, rather than importing or removing material unnecessarily, keeps the job faster and more affordable where the ground allows it.
Why does soil need to be compacted, and what happens if it isn't?
Loose or poorly compacted soil settles unevenly once it carries real weight, whether that is vehicle traffic, foot traffic or a structure. If the ground is not compacted properly before a road, parking area, paved surface or building pad goes on top of it, that surface will crack, sink, rut or open up at the joints, usually within the first year, and the failure will look like a surfacing problem when the actual cause is underneath. Compacting in controlled layers is what prevents that.
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