If your commercial property has exterior drainage with wide-slot grates, you could be sitting on a preventable safety risk. Today we'll cover why standard drain grates cause problems in commercial settings, what the Australian Standards actually require, and what to look for in a durable and safe Australian Standard heel guard grate drain.
The Problem With Standard Drain Grates
Standard drainage grates are designed to move water. That's it. The slot widths are wide enough to handle high flow rates, but they're also wide enough to catch a stiletto heel, a walking cane tip, or the front castor of a wheelchair.
In a residential driveway, that might be a minor annoyance. In a public space, shopping centre entry, a hotel forecourt, or an aged care facility, it's a slip-and-fall waiting to happen.
The issue isn't just heels. It's anything narrow enough to drop into a wide slot and cause someone to lose balance. Pram wheels. Mobility aids. Even a dog's paw.
What the Australian Standards Say
AS 3996 (Access Covers and Grates)¹ sets out clear requirements for grate openings in pedestrian areas. For any grate classified as a Class A pedestrian grate, individual openings must be small enough to prevent heel entrapment, generally under 8mm for round openings or narrow enough in slotted designs that a standard heel tip can't pass through.
If your property is subject to the Disability Discrimination Act (DDA) or complies with the National Construction Code (NCC), accessibility requirements add another layer. Grates in accessible pathways must allow safe passage for wheelchairs and mobility devices without the risk of wheels catching or locking.
Non-compliance isn't a grey area. If a grate doesn't meet the standard and someone is injured, it's very difficult to argue that the hazard wasn't foreseeable.
Where We See This Most Often
We supply drains and grates across Sydney for a wide range of commercial applications. The properties where we see the biggest gap between what's installed and what should be installed tend to be:
- Shopping centres and retail precincts with high foot traffic and mixed footwear
- Hotels, resorts, and hospitality venues with pool surrounds and outdoor dining areas
- Commercial kitchens
- Aged care and healthcare facilities where residents use mobility aids
- Commercial office foyers and carpark entries
- Strata common areas, particularly around pool fencing and garden paths
In most cases, the original grates were chosen for drainage capacity or cost, not pedestrian safety. Upgrading or specifying to a heel-safe solution doesn't mean compromising on water flow. It means choosing a grate that does both jobs.
What to Look For in a Heel-Safe Commercial Grate
A good commercial drain grate needs to tick four boxes at once:
- Heel-safe slot widths that comply with AS 3996 for pedestrian use
- Sufficient flow capacity to handle stormwater or washdown volumes
- Corrosion resistance for long-term durability in wet, high-traffic areas
- A clean, architectural finish that suits the space
Stainless steel strip drains with narrow-slot or wedge-wire grates are one of the most effective solutions for commercial properties. The slot widths are tight enough to be heel-safe, the open area is engineered to maintain drainage performance, and the material won't corrode or degrade the way mild steel or cast iron alternatives can over time.
We manufacture custom stainless steel strip drains and heel-guard grate drains to specific lengths, so they can be fitted precisely to your space without awkward joins or gaps.
Need Help?
We manufacture custom heel-safe stainless steel strip drains and grates right here in Sydney. Whether you need a single replacement grate or a full drainage solution for a new build, we can help. Get in touch with us at Strip Drains to talk through what you need.