Aluminum Crossover Ladder

Lapeyre Stair’s Aluminum Crossover with Alternating Tread Stairs (ATS) provides a patented, space-saving access and crossing solution that replaces vertical and caged ladders while allowing personnel to safely pass over equipment, piping, or conveyors. Engineered in aluminum, this integrated system combines forward-facing alternating tread stair access with a durable crossover platform, meeting OSHA and IBC code requirements. Designed for compact and congested environments such as rooftops, mezzanines, and processing lines, Lapeyre’s aluminum crossover with ATS offers architects, engineers, and contractors a lighter-weight, code-compliant alternative to ladders, ship stairs, and custom-fabricated platforms.

Applications

The Aluminum Crossover with ATS is ideal where safe, forward-facing access and clearance over obstacles are required:

Roof access hatches and rooftop equipment

Mezzanine platforms and interstitial spaces

Manufacturing and distribution facilities

Conveyors and material handling systems

Process piping, tanks, and silos

Comparison: ATS Crossovers vs. Ladders / Ship Stairs

Vertical Ladder – Minimal footprint, but high fall risk and no safe means to cross over equipment.

Ship Stair – Safer than a ladder, but requires significant horizontal space and often additional platforms.

Crossover with Alternating Tread Stairs – Combines compact access, forward-facing safety, and an integrated crossing platform in a fully code-compliant system.

Differentiators

Patented Design – Lapeyre Stair pioneered the Alternating Tread Stair and applies it to integrated crossover solutions.

Code Compliance – Meets OSHA and IBC-Industrial requirements where ladders and improvised crossovers fall short.

Integrated System – Stair access and crossover platform designed as a single engineered solution.

Customization – Heights, platform widths, and spans are adjustable in precise increments for a tailored fit.

Quick Ship Options – Standard configurations available for fast delivery.

Lapeyre Legacy – Decades of innovation in industrial access, safety, and crossing solutions.

Available Downloads

Revit Families (.rfa)

ATS Crossover – 8 ft vertical height

ATS Crossover – 12 ft vertical height

ATS Crossover – 16 ft vertical height

CAD / DWG Files

Plan view

Section detail

Platform and guardrail attachment

Specification Sheets (PDF)

Guide Specs (Word / CSI Format)

Section 055000 – Metal Stairs and Platforms