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Alternating tread stairs

Carbon steel, stainless steel, and aluminum alternating tread stairs are an OSHA-compliant, space-saving solution when a standard stair is not feasible.

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The alternating tread stair design

Standard stair
Standard stair

Each foot normally uses only about half of each tread, stepping out and over the unused section.

Ship stair
Ship stair

The unused half tread becomes an obstacle by reducing the usable depth of the tread below.

Alternating tread stair
Alternating tread stair

The unused half tread is removed to provide more tread depth for improved safety and comfort.

ATS Diagram

Stair slope of either 56 or 68 degrees requires a smaller overall footprint than a standard stair

Designed to be used as a stair with users facing the direction of travel when climbing up and down

Code-compliant handrails meet OSHA requirements for fall protection and improve ease of use

Built-in cushioned central stringer protects users and reduces the risk of trips and falls

The alternating tread stair design

Standard stair
Standard stair

Each foot normally uses only about half of each tread, stepping out and over the unused section.

Ship stair
Ship stair

The unused half tread becomes an obstacle by reducing the usable depth of the tread below.

Alternating tread stair
Alternating tread stair

The unused half tread is removed to provide more tread depth for improved safety and comfort.

Alternating tread stair diagram

Stair slope of either 56 or 68 degrees requires a smaller overall footprint than a standard stair

Designed to be used as a stair with users facing the direction of travel when climbing up and down

Code-compliant handrails meet OSHA requirements for fall protection and improve ease of use

Built-in cushioned central stringer protects users and reduces the risk of trips and falls

Types of alternating tread stairs

Carbon steel with powder coat finish alternating tread stairs
Carbon steel, powder coat finish

NEW! Optional non-slip finish
Standard or custom colors
56 or 68 degree

Carbon steel with galvanized finish alternating tread stairs
Carbon steel, galvanized finish

Ideal for outdoor use
Hot dip galvanized finish
56 or 68 degree

Stainless steel alternating tread stairs
Stainless steel, natural finish

Easy to clean
Grade 304 stainless steel
56 or 68 degree

Aluminum alternating tread stairs
Aluminum, natural finish

Lightweight
Resists corrosion
68 degree only

Types of alternating tread stairs

Carbon steel alternating tread stairs with powder coat finish
Carbon steel, powder coat finish

Ideal for indoor use
Standard or custom colors
56 or 68 degree

Carbon steel alternating tread stairs with galvanized finish
Carbon steel, galvanized finish

Ideal for outdoor use
Hot dip galvanized finish
56 or 68 degree

Stainless steel alternating tread stairs
Stainless steel, natural finish

Easy to clean
Grade 304 stainless steel
56 or 68 degree

Aluminum alternating tread stairs
Aluminum, natural finish

Lightweight
Resists corrosion
68 degree only

Types of alternating tread stairs

Carbon steel alternating tread stairs with powder coat finish
Carbon steel, powder coat finish

Ideal for indoor use
Standard or custom colors
56 or 68 degree

Carbon steel alternating tread stairs with galvanized finish
Carbon steel, galvanized finish

Ideal for outdoor use
Hot dip galvanized finish
56 or 68 degree

Stainless steel alternating tread stairs
Stainless steel, natural finish

Easy to clean
Grade 304 stainless steel
56 or 68 degree

Aluminum alternating tread stairs
Aluminum, natural finish

Lightweight
Resists corrosion
68 degree only

Types of alternating tread stairs

Carbon steel alternating tread stairs with powder coat finish
Carbon steel, powder coat finish

Ideal for indoor use
Standard or custom colors
56 or 68 degree

Carbon steel alternating tread stairs with galvanized finish
Carbon steel, galvanized finish

Ideal for outdoor use
Hot dip galvanized finish
56 or 68 degree

Stainless steel alternating tread stairs
Stainless steel, natural finish

Easy to clean
Grade 304 stainless steel
56 or 68 degree

Aluminum alternating tread stairs
Aluminum, natural finish

Lightweight
Resists corrosion
68 degree only

Product gallery

Carbon steel alternating tread stairs with powder coat finish
Carbon steel alternating tread stairs with powder coat finish
Carbon steel alternating tread stairs with powder coat finish
Carbon steel alternating tread stairs with powder coat finish
Carbon steel alternating tread stairs with galvanized finish
Carbon steel alternating tread stairs with galvanized finish
Carbon steel alternating tread stairs with galvanized finish
Carbon steel alternating tread stairs
Carbon steel alternating tread stairs
Carbon steel alternating tread stairs
Carbon steel alternating tread stairs
Carbon steel alternating tread stairs
Aluminum alternating tread stairs
Alumninum alternating tread stairs
Carbon steel alternating tread stairs
Aluminum alternating tread stairs
Carbon steel alternating tread stairs with galvanized finish
Carbon steel alternating tread stairs with galvanized finish
Carbon steel alternating tread stairs with galvanized finish
Carbon steel alternating tread stairs with galvanized finish
Carbon steel alternating tread stairs with powder coat finish
Carbon steel alternating tread stairs with powder coat finish
Carbon steel alternating tread stairs with powder coat finish
Carbon steel alternating tread stairs with powder coat finish
Aluminum alternating tread stairs
Aluminum alternating tread stairs
Aluminum alternating tread stairs
Stainless steel alternating tread stairs
Carbon steel alternating tread stairs
Carbon steel alternating tread stairs
Carbon steel alternating tread stairs
Carbon steel alternating tread stairs
Stainless steel alternating tread stairs
Stainless steel alternating tread stairs
Stainless steel alternating tread stairs
Stainless steel alternating tread stairs
Carbon steel alternating tread stairs
Carbon steel alternating tread stairs
Carbon steel alternating tread stairs
Carbon steel alternating tread stairs
Aluminum alternating tread stairs
Aluminum alternating tread stairs
Aluminum alternating tread stairs
Aluminum alternating tread stairs
Carbon steel alternating tread stairs
Carbon steel alternating tread stairs
Carbon steel alternating tread stairs
Carbon steel alternating tread stairs
Stainless steel alternating tread stairs
Stainless steel alternating tread stairs
Stainless steel alternating tread stairs
Stainless steel alternating tread stairs
Carbon steel alternating tread stairs with galvanized finish
Carbon steel alternating tread stairs with galvanized finish
Carbon steel alternating tread stairs with galvanized finish
Carbon steel alternating tread stairs with powder coat finish

Customer testimonials

Lapeyre Stair has been a great resource for our business. Their team has helped us design a safer, more cost-effective access and walkway system for our products. Their design expertise, response times, and expedited fabrication lead times have helped us meet demanding customer schedules while freeing up resources to focus on our core business of manufacturing world class water treatment systems.
Ecologix Systems


We decided to switch to the alternating tread stair from caged ladders to access our equipment because it provides a safer, easier, and more efficient means of access to the equipment for our clients. The team at Lapeyre Stair has been great to work with. They are very responsive and their quick turnarounds on drawings and fabrication schedules have met the demands of our fast-paced projects.
Silent Aire


We have used alternating tread stairs from Lapeyre Stair for years and are finding new places to install them all the time. They are safer and easier to climb than a ladder and, when you run out of room for a long set of stairs, they are a great alternative. Customer Service has always been great; they are very patient and helpful; and my orders are correct when they arrive and include all the parts.


Alternating tread stairs are easy to install and assemble. I just measure the height of the platform and decide what degree I want. Customer Service quickly responds with a print for approval, we issue a PO, and the order is produced.
Vincent Incardona, Georgia Pacific


We extensively use alternating tread stairs from Lapeyre Stair instead of ladders in our plant because they are safer and easier to use. Working with Lapeyre Stair is easy and convenient. We just give them the height and the angle we need and they return with a drawings and quote. We ok the layout, provide a PO number, and the order arrives in two to three weeks. Lapeyre Stair is a pleasure to work with.
Joe Steiner, General Mills
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