Steel Staircase T2F10-36: The Industrial Workhorse of Vertical Access

Steel industrial staircases provide safe vertical access between floors, platforms and equipment levels. Below is data from an actual staircase layout drawing (15J401 atlas, T2F10-36 type).

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Basic Specs

 

Item	Value
Stair type	T2F10-36 (15J401 atlas)
Drawing page	P.A44
Stair angle	45° or 59° (per floor height)
Total width	~7,750 mm
Flight width	~3,500 mm (main)
Landing width	1,950 mm each side
Stringers	4 lines (blue in drawing)
Standard	15J401 national atlas

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Layout Dimensions

 

Dimension	Value
Side landing width	1,950 mm
Main flight width	3,500 mm
Gap between flights	350 mm
Total overall width	7,750 mm
Number of stringers	4

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Advantages

Standardized design — from 15J401 atlas, pre-engineered and approved

Fast fabrication — standard components, shop-cut and welded quickly

Flexible angle — 45° or 59° options suit different floor heights

Load tested — atlas stairs designed for industrial live loads

Multiple flights — 4 stringers for wide industrial access

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Disadvantages / Limitations

Standard sizes only — limited to atlas dimensions, not fully custom

Steel needs painting — industrial steel requires anti-corrosion coating

Stair angle trade-off — 45° comfortable but steep; 59° space-saving but tiring

Handrail extra — handrail and infill panels sold separately

Site assembly needed — delivered in parts, bolted on site

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Typical Applications

Industrial plant stairs — access between factory floors and mezzanines

Platform access stairs — equipment platforms, tank tops, walkways

Warehouse mezzanine stairs — access to storage mezzanines

Outdoor steel stairs — exterior fire escape and access stairs

Truck & loading bay stairs — access to truck cabs and loading docks

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Installation Notes

Stringers bolted to embedded plates at top and bottom

Tread plates welded to stringers in shop

Handrails installed after main staircase erection

Angle selected based on actual floor height (45° vs 59°)