Product and selection guide
Steel Grating Stair Treads: specification overview
A steel grating stair tread is a fabricated component coordinated with the stair stringers. The enquiry should distinguish the tread dimension across the stair from the front-to-back depth, then show the bearing-bar direction, side plates, fixing holes and front nosing.
State the grating type, bar size, surface, nosing, width, depth, finish and quantity in the tread order. Match the dimensions and fixing details to the project stair drawing.
Tread width and depth
Include this detail in your drawing or enquiry for an accurate quotation.
Nosing and side-plate requirements
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Bolted or welded fixing details
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Coordination with stair geometry
Include this detail in your drawing or enquiry for an accurate quotation.
Stair tread drawing schedule
| Item | Required information | Why it matters |
|---|---|---|
| Tread length | Clear distance / overall dimension between stringer interfaces | Coordinates the tread with the stair width and side plates. |
| Tread depth | Front-to-back dimension and desired bar count or mesh | Coordinates going, opening pattern and nosing. |
| Grating type | Bearing-bar section, centres, cross-bar centres and surface | Defines the load-carrying panel. |
| Nosing | Profile, material, projection and visual-contrast requirement | Defines the leading edge and foot contact. |
| Side plates | Thickness, depth and orientation | Transfers the tread load to the stringers. |
| Fixing | Hole or slot size, centres, edge distances, bolts or weld detail | Matches the stringer connection. |
| Stair geometry | Rise, going, angle, stringer spacing and landing interface | Checks the tread within the complete stair. |
| Finish / quantity | Surface treatment, number of treads and drawing marks | Supports consistent fabrication and installation. |
Nosing and fixing need explicit details
The selected nosing, side-plate geometry and bolt slots must match the project stair and be shown on the approved drawing.
Complete stair responsibility
Tread capacity is only one part of stair safety. Rise, going, uniformity, landings, guardrails, handrails, clearances and supporting stringers should be checked by the responsible designer against the project standard.
Steel Grating Stair Treads FAQ
Can I order from tread width alone?
No. Provide length, depth, grating configuration, nosing, side plates, fixing centres, finish and quantity.
Are catalog tread dimensions universal?
No. Catalog tables are manufacturer-specific references. Final dimensions must match the approved stair and ZY-grating confirmation.
Should fixing holes be drilled on site?
The intended connection and hole or slot geometry should be coordinated on the drawing before fabrication whenever possible.
Technical references
Standards and terminology
- 15J401 — steel ladder, stair and guardrail drawing reference
- Nucor Grating Catalog (2017) — stair-tread ordering fields
- GB/T 17888.3-2008 — access stair and guardrail context
State the applicable standard, edition and acceptance criteria in your enquiry. The quotation and drawing identify the agreed product configuration.
Order and drawing information
Provide dimensions, load conditions, material, finish, quantity and the applicable standard with your enquiry. The agreed details are recorded in the quotation and production drawing.