Fire Escape Stairway Materials

The choice for the right material typically follows four criteria: cost, technical performance, maintenance, and environment.

The choice for the right material typically follows four criteria: cost, technical performance, maintenance and environment.

 Types of material
Aluminum

Most commonly used material

Galvanized steel           
Most commonly used material
Stainless steel
Not often used because of its high price -used in very specific situations (corrosive environment, food safety, etc.)
Other steels
Little used and not recommended because of the lack of stability (corrosion, rust)
ConcreteRarely used for an additional exterior staircase - not used by JOMY


Material Choise Based on Cost Criteria

In many cases, aluminum will be economically more interesting than steel (especially in complex projects).

 

Total cost of ownership =
Cost of raw materials
+  Production costs
  + Installation Costs + Maintenance costs
Aluminum

The cost per Kg is relatively high, but little weight is required

Limited costs. Easy to apply. Easy to manipulate.

Lower costs for transportation, logistics and assembly. Low weight and meccano - assembly,  no crane needed

No maintenance required.

Galvanized steel

The costs per Kg is relatively low, but much more weight is needed

More difficult to apply and manipulate
Heavier and more cumbersome structures. Crane needed for mounting.
Multiple maintenance and/or paint jobs required over lifetime.


Material Choice Based on Technical performance Criteria

Both materials can create similar structures. Steel stairs are generally slimmer while aluminum stairs require no maintenance.

 
Mechanical properties
Lifetime Stability
Melting point
Aluminum

Similar heights, structures and functionalities

Very good corrosion resistance, even on the coast

Alu: 660 °C / Steel:> 1400°C

The difference in melting point is of little relevance.

Above 80 ° C, the staircase is unusable in practice for evacuation.

Galvanized steel

Similar heights, structures and functionalities

 Corrosion problems with damaged galvanization when installed and used

Alu: 660 °C / Steel:> 1400°C

The difference in melting point is of little relevance.

Above 80 ° C, the staircase is unusable in practice for evacuation.


Material Choice Based on Maintenance and Environment Criteria

Aluminum is more sustainable than galvanized steel.

 Maintenance
Environment
Aluminum

No maintenance needed, even after 30+ years

100% unlimited recyclable

Galvanized steel

Over time, corrosion problems occur with damage to the galvanizing layer or protective layer.

Recyclable in first cycle. Causes problems starting from secondary recycling. Zinc (galva) occurs in nature under influence of acid rain (heavy metal pollution).


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