Excavation is an essential step in the construction process, but by nature it disturbs the soil around it. If you’ve ever repotted a plant, you’ve seen this principle in action. The new soil around the plant is fluffy and loose at first, but it settles down with enough time and water. The same is true of the land you build on, although the process takes a lot longer. The weight of a slab, a wall or a constant stream of traffic can squeeze all the air out of loose soil, leading to sunken or uneven ground and an unstable foundation. So how long does it take dirt to settle after excavation and how do you speed up the process?

A company that provides quality excavation services across Adelaide, Adelaide Hills and Murray Bridge, Pinnacle Earthworks are experts in all aspects of site preparation. We can provide you with excavation services you can count on in the Adelaide are and prepare your land for building upon. 

This article is the Pinnacle Earthworks guide to an all-important question for both construction and mining professionals and DIY builders: how long does it take dirt to settle after excavation? 

Projects that require excavation

Excavation, also widely known as earthmoving, is the process of removing materials such as dirt and rock from an area to create a stable starting point for buildings or underground infrastructure. Excavation creates stable surfaces that are clear of vegetation and debris. It’s an essential first step for construction, mining, and landscaping projects as well as building swimming pools or installing underground cables or water and gas lines. 

Basically any project that requires changing the landscape or readying the ground for physical structures requires landscaping. As a result, there are several kinds including bulk excavation for trenches and pools and tight access excavation requiring smaller machinery. 

So how long does it take the dirt to settle after the excavation process is complete and should you wait for it to fully settle before building starts? 

How long does it take dirt to settle after excavation?

The length of the dirt settling process depends on factors like the variety of soil used, where it was placed, its level of moisture and whether it was manually compacted. Loosely placed soil that hasn’t been compacted can take anywhere from several months to several years to completely settle, generally lasting at least one wet season. Clay soils can take even longer, while sandy soil usually settles much quicker. 

There are so many variables involved in the question of how long it takes dirt to settle after excavation. But you only have so much time to complete your project, so it’s just as important to ask how you can use it efficiently. 

Should you wait for the dirt to settle?

After the excavation job is finished, it’s best not to wait for the dirt to settle on its own. Counting on time, rain and gravity to do the work for you can take months or even years. It also tends to leave unpredictable air pockets which can weaken the foundation’s structural integrity and potentially cause water intrusion and corrosion. Rather than wondering “how long does it take dirt to settle after excavation?”, here are some methods for speeding up the process:

Soil compaction

Mechanical soil compaction is the fastest and most effective way to eliminate the trapped air in soil that causes problems down the track. Using tools like rollers, rammers and trench compactors, this approach presses the soil down to remove any air pockets. However, it takes experience to strike the right balance between flattening the soil enough and not packing it down too rigidly. 

Water compaction

Water is a useful lubricant that helps to pack sandy, loose or otherwise non-cohesive soil more densely. 

Replacing the soil

Sometimes soil resists settling, particularly if it’s heavily clay-based. Mixing the backfill with sand or soil can help it drain faster. 

Pinnacle Earthworks’ excavation and soil compaction services

Pinnacle Earthworks provides site preparation services including excavation and soil compaction across Adelaide, Adelaide Hills and Murray Bridge, South Australia. 

We’re a fully licensed and insured company focusing on commercial, civil and large-scale services. With expertise and modern earthmoving equipment, we handle everything from bulk, basement and drainage excavation to drainage trenching, commercial earthworks and soil compaction.

The advantages of choosing Pinnacle Earthworks include fully licensed and experienced earthmoving contractors with rich knowledge of the Adelaide area and its soil conditions, a state-of-the-art fleet of equipment and all-access capabilities. 

Our process is simple and transparent. We’ll offer you a site assessment and quote, schedule, organise and plan the job once approved and then get to work delivering high-quality results. 

To find out more, call the Pinnacle Earthworks team on 0400 084 944 or get a free quote from us online.