Wall-Mounted Armco Barriers: A Specification Guide
Most Armco installations are floor-fixed — posts driven into the ground or bolted to a concrete slab. But wall-mounted installations are regularly required too: loading bay interiors, ramp walls, multi-storey car park perimeters, and anywhere floor space is restricted but impact protection is still needed.
Wall mounting introduces variables that floor-fixed systems don't face. Getting these right before specifying the installation saves time, money, and remediation work down the line.
Why the Offset Bracket Matters
A wall mount bracket does two jobs: it holds the beam at the correct height, and it creates standoff distance between the wall face and the back of the beam. That standoff isn't arbitrary — it's a functional requirement.
An Armco beam needs room to deflect on impact. Bolt it flush against a wall and it can't flex — the full force of any strike transfers straight into the wall fixing and the wall structure behind it. That's the opposite of what a barrier should do. The protective value comes from the beam's ability to absorb and spread impact energy, not from rigidity.
The standard minimum standoff is 100mm from wall face to beam back, which handles most low-speed vehicle impacts. For higher-speed or higher-mass environments, 150mm is preferable.
Offset brackets are sold by standoff distance — 100mm, 150mm, and 200mm are the standard options. Choose based on the impact scenario, not on whichever bracket happens to fit the space.
Bracket Construction and Load Rating
A wall mount bracket carries the beam's dead load (modest) and the dynamic load of a vehicle strike (significant). It needs to transfer that strike load into the wall substrate without failing at the plate, the weld, or the fixing.
What to look for:
- Minimum 6mm steel plate at the wall face; 8mm for higher-load applications
- Welded bracket arms, not folded — folded brackets straighten out under serious impact
- A four-point bolt pattern at the wall face for structural applications; two-bolt brackets are light-duty/decorative only
Substrate: The Wall Is Only Half the System
A wall-mounted barrier is only as strong as what it's bolted to, so substrate assessment should come before bracket selection.
- Reinforced concrete is the ideal substrate. Chemical anchors at the manufacturer's specified embedment depth give reliable load transfer — just confirm there are no services in the drill path before coring.
- Masonry (dense blockwork or brick) works for most applications with the right expanding or resin anchor. Lightweight aggregate or hollow-core block needs a resin anchor at minimum, as mechanical anchors will pull out under dynamic load.
- Steel frame with cladding is fine if the bracket fixes through to the structural frame — fixing into the cladding alone isn't adequate.
- Stud partition generally isn't suitable. The dynamic loads involved exceed what most stud walls can take.
Height Specification
Standard beam face height is 375–425mm from floor to beam centreline, suitable for passenger car protection. For HGV and forklift environments, raise the beam to match the vehicle's chassis height — typically 500–600mm.
Specification Checklist
Before ordering, confirm:
- Substrate type and thickness
- Required standoff distance
- Beam height from floor
- Finish (galvanised or yellow powder coat)
- No services behind the wall at fixing positions
Need help specifying a wall-mounted installation? Send us your wall type, available height, and vehicle environment, and we'll confirm the right bracket spec.