The garden gate is barely wide enough for a wheelbarrow. The side passage of the house runs straight into a wall after a few steps. The area to be cleared is out back, on a slope, with lawn all around that cannot be turned into a plowed field. The question here is not "what excavator do I get": it is figuring out which machine characteristics determine whether the job takes half a day or three.
Four things really matter: the ground you are working on, the gradient, access to the jobsite, and how the material is discharged. Let us go through them one by one, because each one leads to different choices.
Ground and gradient: two variables that compound each other
On dry, flat ground a wheeled machine works fine. The problem comes when both conditions appear together: soft ground and a slope. A wheeled machine loaded with dirt on muddy ground on a gradient will slip, and at that point you either lighten the load or stop.
Tracks distribute the weight over a wider surface and maintain grip even when the ground gives way. This does not mean a tracked machine will handle any gradient with any payload, but it does mean the limiting factor is not wet ground by itself — it is the gradient combined with the weight being carried. Knowing the actual elevation change on your jobsite — measured with an instrument, not by eye — is the first piece of data you need before choosing.
Access: the constraint you find out about last
You plan the entire job and then, on the day work starts, the machine does not fit through. The pedestrian gate, the gap between two buildings, the entrance to a historic yard: these are the bottlenecks that wipe out every other consideration about machine capacity.
Before comparing any other spec, measure the clear opening of the narrowest passage — width and height — and confirm the machine fits with a real margin, not a theoretical one. A machine that fits by the numbers does not fit in practice: you need room to maneuver, to manage the load, and to get out without causing damage. Leaving this check until the rental or purchase stage is the surest way to run into trouble.
Discharge: where the dirt ends up changes the machine
Moving dirt means loading it, transporting it, and discharging it. The third step is often the one that gets underestimated.
If discharge happens at the edge of a skip or an open area that can be reached directly, a front-tipping skip is enough: pull up, tip, back away. It works well when the discharge point is accessible and there are no height or side obstructions.
When you need to discharge into a dumpster, over a fence, or onto a pile that is already high, a front tip does not reach. You need a high-lift skip that raises the material before opening, or a swivel skip that discharges to the side without having to drive past a certain point. Knowing where the dirt ends up — the exact height and position of the discharge point — is the second piece of data you need, right after the width of the narrowest passage.
Attachments: when hauling is not enough
On many small jobsites the machine has to do more than one thing: break up ground, load, haul, and sometimes also level or till. Bringing multiple specialized machines to the jobsite is not always possible, either because of space or because of cost.
A machine with an attachment plate solves this problem: you change the attachment — dozer blade, bucket, tiller, harrow — without changing the machine. This is a worthwhile solution when jobs repeat often in different settings, less so when you are running a single type of operation in series.
In the Cormidi lineup
For earthmoving in tight spaces, Cormidi tracked dumpers cover the hauling side: front-tipping skips, 180-degree swivel skips, and high-lift skips are selected based on the actual discharge point, not the ideal one. The electric version C85E is useful where exhaust fumes are a problem — indoors, basements, covered yards.
When hauling needs to be paired with ground preparation, CMF multi-purpose machines mount a skip, a concrete mixer, or an attachment plate with dozer blade, bucket, and tiller on the same tracked undercarriage. The same machine that hauls the dirt can also prep or level it, with no second machine on the jobsite. For a closer look at how to approach dirt moving in a yard setting, this article on yard earthmoving is worth reading.
What to check before you decide
Three measurements and one question. The clear opening of the narrowest passage. The maximum gradient on the loaded route. The height and exact position of the discharge point. And finally: does the machine only need to haul, or does it also need to work the ground? With those four answers in hand, comparing the options becomes straightforward. To talk with someone who knows the jobsites in your area, the starting point is your nearest Cormidi dealer.
