Question 1

When should I order a soil investigation?

Accepted Answer

A soil investigation is the very first step if you’re planning to build.  Still waiting for your building permit? No problem. You can already have your soil investigation carried out. It will give you highly valuable information about your plot.

First the soil investigation. Then the design.
Have you bought building land? Have the soil investigation carried out first. And pass the results on to your architect. Based on the findings of the soil investigation, your architect can adapt the design to your building site. Many architects already work with us in exactly this way: first the soil investigation. Then the design.
Or do you prefer to wait until your building permit is approved?  That is a possibility too. However, test results may sometimes show that the soil is not suitable for the design. Unless you invest in much more expensive foundations than planned. Ordering the investigation later may therefore affect both your budget and your schedule.
 • With a soil investigation, you can estimate your budget more accurately in advance. In doing so, you may avoid unexpected extra costs during construction.
 • With a soil investigation, you can determine the necessary foundations in advance. Any additional foundation works will always delay the planning. Always

Order your soil investigation before buying a plot

It’s even a good idea to call us before you buy the land. This way, you avoid paying too much for a plot that requires costly foundation works. Read more about why a soil investigation is always a smart idea.

Question 2

Why should I have a soil investigation carried out?

Accepted Answer

There are three good reasons to perform a soil investigation.
 • You’ll know exactly which foundations are needed. Even in ‘weak’ soil.
 • You avoid unexpected extra costs during construction.
 • You won’t overpay for your building land.

Have you bought building land? Congratulations! But sometimes the soil turns out not to be very load-bearing. People often call this “weak” or “poor” ground.  Soil that is rather unsuitable to build on. That’s exactly why a soil investigation is so useful. It tells you precisely how strong (or weak) your building land is. And it advises which foundations are required to make sure your house will stand firm for generations.

Yes, you can build on ‘weak’ soil Provided that you have the right foundations.
It is perfectly possible to build on “weak stuff”. On the condition that you build on the right type of foundations.  This will be decided by your architect, based on the results of the geotechnical or soil investigation.  Such a test reveals the load-bearing capacity of your building land.  That way, you avoid cracks, damage, or even subsidence of your house.

You estimate your construction budget more accurately
A soil investigation allows you to estimate your budget more accurately in advance.  The geotechnical or stability investigation advises you which type of foundations are required for your building land. It also tells you whether adding a basement is a smart option. Or not.  Such choices will naturally affect the budget. And with a soil investigation you can better plan for them in advance.

You won’t overpay for a building land.
Have a soil investigation carried out before buying a building land. This is not as strange as it may sound.  Because the investigation shows how load-bearing the subsurface really is.  That way you immediately know whether standard, expensive, or very expensive foundations will be needed.  Quite useful to know before signing, right?  This information helps you negotiate the cost. And you will avoid paying too much for a building land that requires costly foundation works.
Any questions? Request a quote? Order? Do not hesitate to contact us.

Question 3

How many cone penetration tests should I have carried out?

Accepted Answer

A standard soil investigation consists of at least 3 cone penetration tests (CPTs). We perform these tests at different locations on your building land, so you get a complete picture of the bearing capacity of your land.

• Three CPTs at different points on your building land actually give you a solid overview of possible variations in the different geological layers.
 • For larger buildings, such as apartment blocks or industrial buildings, the Belgian Building Research Institute (BBRI) recommends one CPT per 300 m².
 • Sometimes, during the investigation, it becomes clear that more than three cone penetration tests are required. In that case, our experienced technicians will contact you right away.

Any questions? Request a quote? Order? Do not hesitate to contact us.

Question 4

How much does my soil investigation cost?

Accepted Answer

The cost of a cone penetration test depends on three factors:
 • Number of tests
 • CPT applied force
 • Accessibility of the site
 
Request a quote. We will provide you with an exact price for your soil investigation.  The more accurate the information you give us, the more precise our quote will be! If we are unsure which rig is best suited for your site, we will first come and inspect your building land.

Question 5

How do I place an order?

Accepted Answer

• Download t(https://www.advison.be/nl/contact)he order form on the contact page.
 • Fill out the form completely. If some fields do not apply to you, simply leave them blank.
 • Email us the completed form.

Please note!
 • Only written orders will be included the schedule. It is not possible to place an order by phone.
 • Utility plans (KLIP request) must be obtained in advance

We really do need the following information
 • Map showing the location of the site
 • Plan of the building zone or placement of the building on the site

Can also be usefull
 • Photographs of the building land
 • Plans and cross-sections of the new construction

Conformation
 • After your written order is received, your investigation will be scheduled.
 • You will receive a confirmation email with the project number.

Order your ground investigation right now or request a personalized quote.

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