Lapeyre Gray Primed Carbon Steel Alternating Tread Stair with Flush Handrail
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Description
The Lapeyre alternating tread stair is a code-compliant replacement for a fixed vertical ladder where there isn't room for a conventional stair. Its patented tread geometry lets you climb and descend facing forward while occupying a fraction of the floor space a standard stair would need. This configuration is built in gray primed carbon steel with a flush handrail.
Carbon steel supplied in gray primer, ready for you to apply a finish coat on site to match an existing colour scheme or specification.
Flush handrail. Handrail terminates flush with the top landing instead of extending past it, so the stair can sit tight against a platform, catwalk, or equipment edge without the rail fouling the walking surface.
Why an alternating tread stair
- Occupies up to 40% less floor space than a conventional stair at the same rise
- Users climb and descend facing forward — safer and far less fatiguing than a vertical ladder
- Meets OSHA 1910.25 and IBC Industrial requirements, so it can replace a ladder without a variance
- Perforated treads shed liquid and debris for secure footing in wet or oily areas
- 1,000 lb load capacity
- Built to your exact rise and held to 1/8" tolerance — no field cutting or shimming
- Bolt-together assembly, no welding required on site
- Patented design manufactured in the USA since 1981
Configure this stair
| Material / finish | Gray Primed Carbon Steel |
|---|---|
| Handrail type | Flush — Handrail terminates flush with the top landing instead of extending past it, so the stair can sit tight against a platform, catwalk, or equipment edge without the rail fouling the walking surface. |
| Stair angle | 56° and 68° (select above) |
| Stair rise | 4' to 20' in 6" steps (select above) |
| Tread style | Perforated |
| Tread depth x width | 10.5" x 9" |
| Stair width | 20" |
| Overall width | 23" |
| Handrail height | 0" |
| Capacity | 1000 lbs |
| Compliance | OSHA, IBC Industrial |
| Riser type | Open |
| Country of origin | USA |
Available stair rises
33 rises available in this configuration: 4', 4' 6", 5', 5' 6", 6', 6' 6", 7', 7' 6", 8', 8' 6", 9', 9' 6", 10', 10' 6", 11', 11' 6", 12', 12' 6", 13', 13' 6", 14', 14' 6", 15', 15' 6", 16', 16' 6", 17', 17' 6", 18', 18' 6", 19', 19' 6", 20'.
Measure from the lower finished floor to the top landing surface. If your rise falls between two listed values, or you need a rise outside this range, we can order it built to your exact dimension — contact us for a quote.
Important safety note
An alternating tread stair is an access product, not fall-protection equipment. It does not replace guardrails, a fall-arrest system, or a safety gate at the top landing where those are required.
Configuration: Gray Primed Carbon Steel / Flush handrail
Specifications
| Material | Gray Primed Carbon Steel |
|---|---|
| Code Compliance | OSHA, IBC Industrial |
| Tread Width | 9" |
| Tread Depth | 10.5" |
| Tread Style | Perforated |
| Overall Width | 20" |