Test pits from HDC-Fertiggruben

for truck, bus and car

In every successful and modern workshop there is a test pit - also called a finishing pit, workshop pit, working pit or assembly pit. Working on a truck, car or bus in a test pit not only promotes productive and effective work, but also supports health, as the execution is ergonomic.

What do you have to consider when building or buying a test pit? Which regulations must be observed? We explain all the important information about the test pit.

Please contact us for more information about test pits:

Icon Telefonhöhrer, HDC Fertiggruben+49 (0) 2241 26 47 18

Icon E-Mail, Kontaktinfo@hdc-fertiggruben.de

We are happy to help you!

Your advantages of HDC test pits

Icon Arbeit im Stehen, Fertiggruben

Comfortable working at a pleasant standing height possible

Icon Wassertropfen, Fertiggruben

No accumulation of rainwater in outdoor pits due to watercourse

Icon Platz, Fertiggruben

Complete utilization of the available space possible with closed pit

Icon Auto ebenerdig, Fertiggruben

No additional equipment required due to ground level access

Icon Abdeckung, Fertiggruben

Various cover options - e.g. roller covers

Icon LKW, Fertiggruben

Suitable for truck, car and bus

We are your professional partner for test pits for trucks, buses and cars.

What are test pits?

A test pit - also called a work pit, workshop pit, inspection pit or vehicle pit - is a shaft that can replace a lifting platform. Here, work can be carried out efficiently on vehicles such as trucks, cars or buses while standing. Inspection pits are therefore particularly suitable for workshops and garages. So that your test pit is individually tailored to you, we offer various equipment.

Possibilities to equip your test pits:

Upgrade your test pits according to your needs:

  • Compressed air
  • Exhaust air
  • Lighting
  • Fresh oil supply
  • Pit jack
  • Articulated play tester
  • Rolling brake tester
  • Electrical installations

Test pits for maintenance and repairs on the truck

Test pits are ideal for truck maintenance and repairs. The large surface area of a test pit enables mechanics to work on the truck at the same time as it is being loaded. Working in a pit is therefore productive and fast, which is to the benefit of the transport companies. Your vehicles need regular inspections, but are pressed for time and need you back after a short period of time. With an inspection pit you avoid long waiting times!

Certified prefabricated pits

  • certified by the DIBt with the approval no. Z-38.5-300
  • manufactured according to SLW 60
  • statics tested according to "EUROCODE" standards
  • pits correspond to the accident prevention regulations of the professional association BGR and DGUV
  • correspond to the regulations of AwSV, WHG, TRBS, TRGS
  • manufactured on the basis of our quality management according to ISO guidelines

FAQ about test pits

Get an overview of all important information about test pits in our FAQ:

You decide what length your test pit should be in the end. If you are working on a long vehicle, you should take into account that not both pit accesses should be blocked. Therefore, we give 20 metres as a guide value for the length. There is no limit for the height. This is determined in relation to the size of your garage or workshop.

In width, HDC test pits have 0.9 - 1.05 meters as standard. The standard value for the depth varies according to the available ground clearance: for a truck (a lot of ground clearance) it is 1.39 metres deep and for buses (little ground clearance) 1.49 metres deep. When determining the dimensions of your test pit, it is important to note that you can stand comfortably and efficiently in the pit. Base this on the height of your employees.

Even if you can determine the dimensions of your test pit individually, you must comply with regulations. This includes the obligation to keep both entrances to the test pit open, as this will keep workers safe. If the test pit is deeper than 1.60 metres, a forced ventilation system must be installed.

You can select the equipment individually, whereby this depends on the size of your work site. For a mobile pit jack, you need additional storage space or a recess. If you also need lighting, supply lines and compressed air, you can extend your test pit wider to create more space.
You must comply with these regulations when equipping test pits:

  • Two access points required
  • Pit lighting must not protrude into the pit
  • One emergency exit only allowed under certain guidelines
  • Suitable pump sump must be available

We are a WHG certified specialist company and are proud to offer you test pits including complete equipment.

Depending on the use, there are different covers with the same goal - safety! If you do not use a test pit for a longer period of time, you should use a roller cover. This allows you to work without danger in the workshop, for example.
For an additional barrier of the test pits, use standpipes or barrier chains at best. Plates , gratings and planks are used to cover the entire test pit. Here, above all, the stability should be checked so that it can also be driven over by heavy vehicles.

We offer you a professional production of test pits!

First, we come to you with our DEMO service and present the test pit on site free of charge. We provide you with expert advice and clarify all questions. With the help of a 3D pit configurator, we design your individual test pit and present it to you. For the construction of the test pits you can prepare the site or leave this to us. The entire construction is carried out by our qualified HDC prefabricated pit team, so that you receive your turnkey test pit in the end.

Pit jacks can be used to lift heavy vehicles. They are available floor-running or suspended. The "floor-runningpit jack" is an additional feature that is built into the rail system. Thus, it can serve as a running surface.

Inspection pits are also called workshop pits, assembly pits or maintenance pits. All of them are used for efficient work under a vehicle such as a truck, car or bus.

The pit surround must be secure and resilient to withstand vehicles. Some prefabricated pits can be left in both directions of travel, which means that a wheel deflector is required.

In order to use the test pit additionally as a running rail for the chassis of the pit jack, some rules must be observed regarding distances and size.

A test pit is particularly suitable for hobby mechanics. You can use a lifting platform, but the low ceiling height or the unstable floor usually put a spanner in the works. More and more test pits are being installed in private garages, making it easier to work on vehicles. The test pit not only saves space, but is also multifunctional: in a possibly small garage, the test pit can easily be covered so that other work can also be done on it.

A building permit is required for the construction of a test pit in a private area. In addition, commission a structural engineer to carry out all the necessary static calculations for you.

For safety reasons, we recommend a white concrete tub for possible water damage. This concrete tub is insulated (impermeable to water) and takes into account the room climate and specific building physics. Thus, it meets the extensive criteria of durable structures.

Before you build a test pit yourself, ask yourself these questions:

  • What are the dimensions of the vehicle?
  • How big are you yourself?

Test pits can be built individually. Important: You must have enough space to be able to work comfortably. Accordingly, make sure that the width is sufficient. As far as the height is concerned, it is important that you can work on the vehicle in an upright position. The test pits also prevent health complaints such as back pain.

In addition to convenience, safety plays a key role. As in any area, the floor slab must be load-bearing and coverable. In order to extract exhaust gases, which are produced, for example, in combination with petrol and a spark, a technical ventilation system must be installed for health reasons. For lighting in the test pit, fluorescent tubes have proven their worth, as they are particularly protected by being installed in the pit wall.

You can pursue your dream of having your own test pit! Just observe the regulations.

The HDC test pits have a warranty of 24 months. The electrical or wear parts, on the other hand, have a warranty of 12 months. A basic requirement for the longevity of your test pit is regular maintenance and cleaning units.

We recommend a joint play tester, as this checks the joint play for technical faults such as defective axle lines and thus detects these at an early stage.

We will be happy to advise you on the costs of the test pits. We additionally offer pit jacks or covers. Contact us now! We will install your individual test pit in your workshop or garage.

Your prefabricated pits A-Team: Get to know us personally


Hermann Lümmen

+49 (0) 2241 26 47 18

Expert advice

Michael Krönig

+49 (0) 7121 26726 40
+49 (0) 1738077596

Zum Wäldle 11
D 72768 Reutlingen

Specialist advice/
Head office

Timo Thomas

+49 (0) 2241 26 47 18

Specialist advice/
Head office

Walter Biergans

+49 (0) 2241 26 47 18