Removable Bollards: Flexible Security for Controlled Access
Removable bollards are the ideal solution when you need to restrict vehicle access most of the time but allow authorised vehicles through occasionally. They combine the security of a fixed bollard with the flexibility of temporary access, making them invaluable for a wide range of UK applications.
How Removable Bollards Work
Removable bollards consist of two components: a permanently installed ground socket, and the bollard itself which locks into the socket using a key mechanism. When locked in place, it functions identically to a fixed bollard. When unlocked and removed, it can be stored nearby. The socket includes a cover cap to protect it when empty and prevent trip hazards.
Common Applications
- Private car parks: Preventing unauthorised parking while allowing residents or staff access
- Pedestrian precincts: Restricting vehicle access during trading hours while allowing deliveries outside those times
- Driveways and private roads: Protecting residential and commercial driveways from unauthorised vehicle access
- Emergency access points: Keeping emergency routes clear while preventing misuse
- Temporary events: Setting up and dismantling access controls quickly around event venues
- Service areas: Controlling access to loading bays and service roads
Materials and Specifications
Steel Removable Bollards
Steel is the most common material. Typical specifications include: diameter 76mm to 114mm; height above ground 900mm to 1,000mm; wall thickness 3mm to 6mm; hot-dip galvanised or powder-coated finish.
Cast Iron Removable Bollards
For heritage and conservation areas, cast iron removable bollards provide an authentic Victorian appearance while offering excellent durability. They are heavier than steel equivalents but require less maintenance and suit traditional streetscapes.
Security Considerations
Removable bollards provide good practical security but are not suitable for hostile vehicle mitigation (HVM) applications. The locking socket can be overcome by determined attack with sufficient force. For HVM requirements, fixed or automatic rising bollards are more appropriate. Key control is important — use restricted key profiles for higher-security applications and maintain a key register.
Installation
Installing a removable bollard socket requires: core drilling a hole of approximately 150-200mm diameter to a depth of 600-750mm; checking for underground services before drilling; setting the socket in concrete, ensuring it is perfectly vertical; and allowing concrete to cure before use (typically 24-48 hours). The socket cover should be flush with or slightly below the surrounding surface.
Maintenance
Periodic lubrication of the locking mechanism prevents seizing, particularly in coastal environments. Inspect the socket annually for corrosion or damage, and replace locking mechanisms if they become difficult to operate.