Fire Safety Specifications for Steel Stairs in Shared Buildings

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Fire rated steel stairs in shared buildings should be specified by fire resistance performance, non-combustible materials, and a clear escape route design. Confirm the requirements with the project engineer and fire consultant before production, since exact values depend on the building's classification and local regulations.

Why fire performance matters for shared staircases

In a shared building, the staircase is often the main escape route for every resident. When a fire starts in one apartment or in a common area, the stairs must stay usable long enough for people to leave safely. For this reason, building managers and developers should treat the stair as a fire safety element, not just a piece of metalwork.

Steel is non-combustible, which is a good starting point. However, the full stair assembly, including treads, landings, connections and fixings, has to be considered together.

Key items to put in the written specification

A clear written specification avoids misunderstandings later. Ask for the following items to be stated explicitly:

Required fire resistance rating of the stair structure, as set by the fire consultant
Materials and thicknesses of steel used in stringers, treads and landings
Type of protective finish and whether it affects fire behaviour
Details of connections, anchors and fixings to walls and slabs
Clearances and handrail details that support safe evacuation

Materials and finishes that support fire safety

Choose materials that remain non-combustible under heat. Solid steel treads with a suitable anti-slip surface are a common choice in shared stairwells. Protective coatings should be selected for durability, but their fire behaviour must also be confirmed, since some finishes can release fumes or change under high temperatures.

Ask the manufacturer which finishes were used in similar projects and request the documentation the fire consultant needs for approval.

Escape route and layout considerations

Fire safety is not only about the material. The stair must provide a clear, unobstructed escape route with enough width for the expected number of occupants. Landings should be large enough to allow people to turn and pass safely, and handrails should be continuous and easy to grip.

Avoid designs that create dead ends, narrow winders or slippery surfaces in the main escape path. Check that the layout matches the building's approved fire plan.

Approvals, documentation and inspection

Before ordering, confirm which approvals the authorities or the building committee require. Typically this includes drawings, material documentation and a written statement of the fire rating the stair is designed to meet. Keep all records together in the project file for future inspections.

Schedule an inspection after installation so that the as-built stair can be compared with the approved drawings and specification.

Working with the factory from the start

A reliable process begins with an inquiry that includes photos and the building plans. Our team at Techno Kol Uzi takes on-site measurements, prepares a drawing and a written specification, and waits for your approval before production. This allows the fire consultant, engineer and building committee to review the same document, which reduces changes during installation.

Production takes place in our Tel Aviv factory, and finishing such as hot-dip galvanizing or powder coating is planned as part of the specification.

Frequently asked questions

Are all steel stairs automatically fire rated?

No. Steel is non-combustible, but a fire rating depends on the complete assembly and the performance required for the building. The fire consultant should define the required rating.

Who decides the fire requirements for a shared staircase?

The requirements are usually set by the building design, the fire consultant and the local authority. The factory builds to the approved specification.

Can I change the finish after the stair is designed?

Possibly, but any change should be reviewed, since finishes can affect fire behaviour and approvals. Confirm changes in writing before production.

Do I need the fire details before requesting a quote?

It helps to have them early. Sharing the building plans and the required fire performance at inquiry stage keeps the design and approvals on track.

Common mistakes to avoid

A common mistake is choosing a stair design based only on appearance and then discovering late that the fire requirements or escape width were not met. Always confirm the fire specification before drawings are approved.

Our recommendation

Involve the fire consultant and engineer before the drawings are finalized, and request a written specification that lists the required fire rating, materials, finishes and fixings. This avoids costly changes after production.

Summary

Fire rated steel stairs for shared buildings need a clear written specification covering fire performance, materials, finishes, escape layout and approvals. Confirm exact requirements with your engineer and fire consultant before ordering.

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