In brief: The headquarters of a financial services provider in the Rhine-Main area has a large, open forecourt directly on the street. Any vehicle could roll right up to the glass façade and the main entrance. Instead of concrete barriers or a fence, there are now retractable security bollards made of stainless steel V4A (316): lowered during the day when needed, raised at night and marked with a blue LED ring. The square stays open, yet the building is protected.
The starting point: a prestigious forecourt without a barrier
The building is a typical modern corporate headquarters: two office wings with a glazed atrium and the main entrance between them, in front of it a generous piazza with trees, benches and natural stone slabs. The square is deliberately open in design. Employees, visitors and customers should be able to reach the entrance without a barrier or gatehouse.
From a security point of view, this very openness is the problem. The forecourt is at street level next to a public road. Anyone who wants to can drive over the kerb onto the piazza and be in front of the glass façade a few seconds later. For a company where several hundred people work every day and where sensitive data is stored, this is not an acceptable residual risk: a vehicle used as a ramming tool, a break-in with a van, or simply illegal parkers and delivery vans using the square as a turning area.
At the same time, the square has to remain accessible to vehicles. In an emergency the fire brigade needs access right up to the building, building services must receive deliveries, and during events caterers and exhibitors drive up to the atrium. A solution that closes the square permanently was therefore ruled out from the start.
The entire front of the forecourt faces the street. On the right and left, at the two places where a vehicle could get onto the piazza, several retractable security bollards stand in a line.
Why no concrete barriers, no fence and no barrier arm
We discussed the obvious alternatives with the operator, and each one failed on one point:
- Concrete blocks or boulders would have reliably closed off the forecourt, but they do not suit a building made of glass, steel and natural stone. They would also have to be moved aside with a forklift for every delivery.
- A fence with a gate would have turned the open piazza into a fenced yard – exactly the opposite of what the architecture wants. A gate is also wide, slow and offers hardly any resistance to an approaching vehicle.
- A barrier arm regulates traffic but does not protect. A barrier boom stops no one who wants to break through it.
Retractable security bollards solve all three problems at once: when lowered they disappear flush into the paving and the square looks as before. When raised they form a barrier that actually stops a vehicle. And they can be opened within seconds when the fire brigade or a supplier arrives.
The solution: lines of bollards at both access points, marked blue at night
The bollards stand where a vehicle could reach the forecourt at all: at the two transitions between street and piazza. The spacing between the bollards is chosen so that no car fits through, while pedestrians, cyclists and wheelchair users pass unhindered. In between, the area remains completely free, without chains, hoops or signs.
Each bollard is made of stainless steel V4A (1.4571) with a reinforced wall, has a brushed finish and carries an LED light ring on top. At night the blue ring marks the barrier line unmistakably, without a driver only realising in the headlights that something is there. During the day the light is discreet and blends in with the building lighting.
The system is operated from inside the building. At the forecourt itself there is no push button, no key switch and no emergency release that an unauthorised person could reach. For the fire brigade and announced deliveries, the bollards lower at the push of a button in three seconds and then rise again.
Raised at night: the blue LED ring makes the line of bollards visible from the street. The square behind it remains open and accessible on foot.
Locked: why the bollards cannot be pushed down
A security bollard is only as good as its protection against tampering. Our bollards therefore have a mechanical height lock: as soon as the bollard reaches the top, a locking bolt engages. From that moment on, the bollard cannot be pushed down either by hand or with a car jack. Even if someone were to cut the supply lines in the ground, the bollard would stay up because it is held by the bolt, not by pressure. The access remains blocked.
For high-security applications, we also had our armoured version with a steel core tested in an official crash test: a 12-tonne lorry at 80 km/h head-on into a single bollard. The lorry was stopped, the bollard stood. Which wall thickness makes sense for a site depends on the run-up distance; on our page Security bollards we explain how we assess this.
The technology: compressed air instead of electronics in the ground
Our bollards are operated by compressed air. In the ground there is only a stainless steel cylinder with piston rod, metal scraper, grease chamber and seals designed for down to −35 °C. No motor, no circuit board, no limit switch and no heater sit in the ground. The bollard is therefore sealed to IP69: heavy rain, road salt in winter and cleaning water from the grounds staff do not affect it.
The compressor and valves stand dry in the building's plant room. This has two consequences that facility managers in particular appreciate: first, the system is very low-maintenance because all wearing parts are where you can see them. Second, every component can be replaced in a few minutes without removing a bollard or breaking open the square. A valve or compressor is changed via a quick-release coupling, with us on the phone or on a WhatsApp video call if necessary.
Power failures are also taken care of: the system can be set so that the bollards stay raised during a power cut. For a site like this, that is the right choice. If the power fails at night, the forecourt remains blocked. Why we prefer compressed air to electric spindles and hydraulics is compared in detail on the page Bollard drives compared.
From above the principle becomes clear: the piazza between the two wings of the building remains completely free. Only the edge facing the street is secured, where a vehicle could drive in.
What other companies can take away from this project
Office buildings, banks, data centres and public authorities almost always have the same starting point: an open, prestigious forecourt that must not look like a fortress but still has to be protected against vehicles. Before you plan, five questions are worth asking:
- Where exactly can a vehicle reach the square? Usually there are only two or three places. Bollards are needed only there; the rest of the square stays free.
- How long is the run-up distance? The longer the straight path in front of the bollard, the higher the possible impact speed and the stronger the wall should be.
- Who still needs to get in? Fire brigade, deliveries, events. Retractable bollards can be opened; concrete barriers cannot.
- What happens during a power failure? With us you choose: access stays blocked or access is released. For security-critical sites, “blocked” is the right setting.
- Is there an emergency release outside, and who can reach it? A security bollard should not have one.
We have solved similar tasks at Hamburg City Hall and on Große Freiheit off the Reeperbahn, among others. You can read more about protecting buildings and people in our guides Ramming and burglary protection and Access management for businesses.
Do you need to secure a forecourt, an entrance or company premises?
Send us a photo or a site plan via WhatsApp to +49 172 4544485 or call us on +49 40 226390411. We will tell you where bollards are needed, which version suits the run-up distance and how the system is integrated into your building services – free of charge and without a sales rep visit. You will find all models and prices in our overview retractable bollards made of stainless steel V4A, and answers to common questions in the FAQ on retractable bollards. Everything is manufactured at our site in Seevetal near Hamburg.
