Trenching and Boring Services in Melbourne: Why Soil Classification is Important?

February 15, 2019

Cohesive soil types cling together when they're excavated. Gritty soil falls apart and trickles back into a trench. That's just part of the challenge when it comes to working with different ground types. That's why, as a trenching and boring service scrapes away the first layer of sod, the project foreman doesn't just blindly roll the dice. There's no guesswork here, no impromptu excavation work employed.

Feasibility Studies: Soil Classification

The ground in a stated region, and we're using Melbourne as our project base, is a living thing. It has character, properties that vary. Known collectively as soil classification profiles, what others see as dirt is composed of layers of loam and clay. Sticky boundaries hold trace amounts of water and root networks. The earthy stuff is easy to dig or hard to extract, perhaps because of a rocky intermix. It comes out of a trench in large chunks or breaks apart in nasty spills. And here, at that last sentence, is the problem. For trenching services, we don't want varying soil stiffness issues to threaten the structural integrity of an excavated trench or borehole.

Melburne-Based Soil Profiles

Up in the hills, in and around Silvan and Chirnside Park, solid chunks of red loam lift easily out of a trench. Clay-laced brown loam spreads far and wide below the grass and dirt in lower Mornington Peninsula. Elsewhere, there are gritty deposits of loose sand and "coffee rock," which crumbles in unpredictable ways when it's dry. There are basalts and loose rock, sand and clay, and friable particles of dark-brown dirt. All-in-all, the ground structure below the city of Melbourne varies wildly. There's just no way can an excavating session be implemented, not until the soil classification work is done. A blind dig is not an option, and it won't be until those structurally different soils are identified.

The Trenching Service Takes Control

There are soil classification databases available in many nations. If this resource isn't at-hand, a competent person can take a ground sample and have it analyzed. The soil profile is identified, and the excavation process alters course. Taking control of the operation, water hoses soak friable and sandy patches. Low water retention areas solidify, a borehole goes in smoothly, and the work proceeds uninterrupted.

And why is all of this effort so important? Someone working in a Melbourne garden isn't likely to apply so much effort, right? That's true, but boreholes sink deep underground. They can collapse. Likewise, trenches will collapse if their dirt walls are too sandy and loose. By addressing soil classification matters, a trenching service takes control of the structural characteristics of a borehole or trench. In doing so, dangerous subsidence issues are safely mitigated.

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