Applications

Flood Protection for Train and Metro Stations

Underground station entries lead straight down to the concourse and platforms, so street flooding can pour in within minutes. These are the barriers we suggest for pedestrian entries, service doors and low openings at street level.

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Passive flood barrier panel raised across a paved station entrance, with water held behind it

Where water gets in

The openings to plan for

Stair and escalator entries from the street
Lift shafts and lift lobbies at street level
Service and maintenance doors to plant rooms
Ventilation and access openings close to the ground

Barriers that suit this site

Products to consider

Hydrodynamic Passive Flood Barrier

The panel lies flush in the entry floor and rises on the floodwater, with no power or operator needed. Protection heights run from 0.6 m to 1.2 m, and it lowers under its own weight as the water recedes.

Best for: Pedestrian entries

View Hydrodynamic Passive Flood Barrier →

Aluminium Flood Barriers

200 mm panels stack in fixed side channels to the height needed, up to 2 m. Staff close the opening ahead of a forecast event and lift the panels out afterwards.

Best for: Service doors and side entries

View Aluminium Flood Barriers →

Water-Activated Sandbags

The bags store flat and swell on contact with fresh water in 2–3 minutes, with no sand to fill. They are reusable, hold back and divert water, and some seepage can occur.

Best for: Rapid response and gap filling

View Water-Activated Sandbags →

Choosing between them

A busy entry that must stay open until the water arrives suits the passive barrier, because it sits flush and needs nobody to deploy it. A retrofit on an existing floor can be surface-mounted with a ramp each side, which affects step-free access and needs checking against the station's accessibility requirements.

Aluminium sets suit side doors and service entries that staff can close ahead of a forecast event. Water-activated sandbags are a stockpile for gaps, vents and unexpected low points.

Send the width of each entry, photos and the flood depth to hold back, and tell us about passenger flows and accessibility requirements.

What we need to quote

Width and height of each opening
Photos of each opening and the ground on both sides
How high the water has reached before, or the flood level to plan for
Whether power is available at the opening, and what traffic crosses it
The suburb and state of the site

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FAQ

Questions we hear about train and metro stations

Can passengers walk over a passive barrier?

Yes. Recessed, the lowered barrier lies flush with the floor, and an aluminium chequer-plate top or anti-slip coating is available for extra grip. Surface-mounted versions need a ramp each side.

What if the water rises faster than staff can respond?

The passive barrier does not need staff, because it lifts when floodwater reaches it. Aluminium sets and sandbags need people to place them, so many sites put the self-activating barrier on the busiest entries.

Do the barriers suit an older station?

Often, though older entries can have uneven floors or little depth for a recess. A surface-mounted passive barrier or a made-to-measure aluminium set may suit those openings, which we assess from photos and measurements.

Send the opening sizes and a few photos.

We reply within 1 business day with a recommendation for each opening and a written quotation for the whole site.

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