Click to Call ▶ 800-948-7780 ◀ for the Lowest Price in the Marketplace & Free Expert Advice from a Mechanical Engineer

S-3000

Precision Ladders Alternating Tread Stairs

$4,250.00

Precision Ladders ATS Alternating Tread Stair New Construction Roof Hatch

Precision Ladders ATS Alternating Tread Stair Bottom Detail

Compact Alternating Tread Stair System With Dual Handrails

Precision Ladders ATS Alternating Tread Stair In Stairwell

Precision Ladders ATS Alternating Tread Stair Free Standing In Factory

Precision Ladders Alternating Tread Stairs

Precision Ladders

S-3000

Precision Ladders Alternating Tread Stairs

Name: Precision Ladders Alternating Tread Stairs
Brand: Precision Ladders
SKU: S-3000
Price: 4250.0 USD
Availability: InStock

$4,250.00

Efficient Design That Fits Tight Spaces Perfectly

"Cleverly engineered, installs cleanly, and provides safe, confident access where standard stairs won’t fit"

▷ 1000-pound Load Capacity
▷ Available in 56° or 68° Angle of Incline
▷ Aluminum Bar Grating Treads
▷ Optional 42″ Handrail Extension

Please enter the FLOOR-TO-CEILING height: Feet, Inches.

Please enter the Ceiling Structure Thickness to the nearest 1/8":

Inches, Inches in Fractions.

Note: the fractions will be 0, 1/8, 1/4, 3/8, 1/2, 5/8, 3/4, 7/8

I understand that my product will be custom-manufactured and cannot be canceled once ordered.

Inventive Garage Workshop is an Authorized Precision Ladders Dealer offering the lowest prices in the market, rapid order processing, a super-strong buyer satisfaction guarantee, along with comprehensive, expert support before AND after the sale.

▶ Installation Services Are Available Nationwide

☆ Exclusive Benefits When You Buy from Inventive ☆

When Space Is Limited, Choose the Smarter Way Up

When tight spaces or steep climbs make traditional stairways unsafe or impossible, you need a smarter solution. Precision Ladders' Alternating Tread Stairs are designed to provide safe, space-conscious access where full-size stairs can't fit. Whether you need a walk-thru stair, access to a roof hatch, stairs leading to a platform, or a crossover stair with a central platform, there's a configuration built for your exact need.

Trusted in industrial, commercial, and utility environments, these stairs are OSHA-compliant and engineered for long-term, reliable performance.

🔑 Key Features

Alternating tread design for steep-angle access
Saves horizontal space in tight areas
Meets OSHA safety standards
Fixed stair design (non-folding)
Ideal for mezzanines, mechanical rooms, and lofts
Easy to install and maintain

💪 Built to Perform

High-strength aluminum alloy
Steel handrails
Non-slip tread surfaces
Stainless steel hardware
Optional finishes

📏 Dimensions & Capacity

Load Capacity: Designed to support up to 1,000 pounds
Tread Depth: Minimum of 5 inches
Angle of Incline: Available in either 56° or 68°

Who Needs Alternating Tread Stairs? You Might Be One of Them

Facility Managers: Managing tight mechanical rooms or storage areas can install alternating tread stairs to ensure safe access without wasting valuable floor space.

Industrial Engineers: Working with equipment platforms or mezzanines benefit from the compact footprint and OSHA-compliant access.

Architects and Builders: Designing for commercial or industrial spaces with height constraints can use these stairs to meet code without redesigning the structure.

Warehouse Operators: Can use alternating tread stairs to safely reach elevated platforms or cross over machinery without interrupting workflow.

Maintenance Teams: Accessing roof hatches, lofts, or elevated systems will find the alternating tread design easier and safer than traditional ladders.

OEM Equipment Manufacturers: Who require access platforms as part of their system can integrate these stairs to meet compliance standards.

This stair isn’t just for industrial use—it’s for any application where space is limited, but safety and access can’t be compromised.

Proudly Made in the USA

All Precision Ladders products are proudly made in the USA using premium materials and expert craftsmanship. Specializing in commercial-grade aluminum and steel access solutions, the company supports American manufacturing while delivering reliable, code-compliant ladders and stair systems built for safety, performance, and longevity.

Features & Benefits

Stability: Unlike wobbly ladders, this stair system offers fixed handrails, non-slip treads, and a solid climb you can trust.

Efficiency: The alternating tread design allows access in areas where standard stairs or ladders simply don’t fit.

Compliance: Fully meets OSHA and ANSI standards, which many cheaper ladders do not.

Customization: Choose from walk-thru, roof hatch, platform access, or crossover options tailored to your space.

Specifications

Detailed Specs

Specification	Details
Material:	All components are constructed from aluminum alloy 6005-T5
Stringers:	3″ x 2″ x 1/8″ aluminum tubular side rails with a 10″ x 1/4″ center stringer
Treads:	Aluminum bar grating with deeply serrated surfaces for maximum traction
Handrails:	1-1/4″ Schedule 40 aluminum pipe, providing a 1.66″ OD, with internal aluminum fittings
Tread Width:	24″ standard for roof hatch access 28″ for walk-thru models
Tread Depth:	Minimum of 5 inches (127 mm), with a projected tread depth of at least 8-1/2 inches (216 mm)
Riser Height:	Maximum of 9-1/2 inches (241 mm)
Angle of Incline:	Available in either 56° or 68°, complying with OSHA standards
Load Capacity:	Designed to support up to 1,000 pounds
Finish Options:	Standard: Mill finish Optional: Anodized finish Powder-coated finish
Configurations:	Walk-Thru: Features a 42″ handrail extension for accessing platforms, landings, or other elevated work surfaces. Roof Hatch Access: Designed for interior access to roof hatches. Platform Access: Leads directly to a platform, suitable for various applications. Crossover: Incorporates a landing platform at the top or between two stairs, ideal for bridging over obstacles.
Additional Features:	Handrail Height: Between 30 inches (762 mm) and 34 inches (864 mm) above tread nosings, as per OSHA guidelines. Mounting Brackets: Floor Brackets: 4″ x 4″ x 1/4″ aluminum angle. Top Brackets: Sized based on stair's rise and run, typically 4″ to 6″ tall x 2″ mounting flange x 1/4″ thick x 6″ x 10″ long aluminum angle.

Detailed Specs

Specification	Details
Material:	All components are constructed from aluminum alloy 6005-T5
Stringers:	3″ x 2″ x 1/8″ aluminum tubular side rails with a 10″ x 1/4″ center stringer
Treads:	Aluminum bar grating with deeply serrated surfaces for maximum traction
Handrails:	1-1/4″ Schedule 40 aluminum pipe, providing a 1.66″ OD, with internal aluminum fittings
Tread Width:	24″ standard for roof hatch access 28″ for walk-thru models
Tread Depth:	Minimum of 5 inches (127 mm), with a projected tread depth of at least 8-1/2 inches (216 mm)
Riser Height:	Maximum of 9-1/2 inches (241 mm)
Angle of Incline:	Available in either 56° or 68°, complying with OSHA standards
Load Capacity:	Designed to support up to 1,000 pounds
Finish Options:	Standard: Mill finish Optional: Anodized finish Powder-coated finish
Configurations:	Walk-Thru: Features a 42″ handrail extension for accessing platforms, landings, or other elevated work surfaces. Roof Hatch Access: Designed for interior access to roof hatches. Platform Access: Leads directly to a platform, suitable for various applications. Crossover: Incorporates a landing platform at the top or between two stairs, ideal for bridging over obstacles.
Additional Features:	Handrail Height: Between 30 inches (762 mm) and 34 inches (864 mm) above tread nosings, as per OSHA guidelines. Mounting Brackets: Floor Brackets: 4″ x 4″ x 1/4″ aluminum angle. Top Brackets: Sized based on stair's rise and run, typically 4″ to 6″ tall x 2″ mounting flange x 1/4″ thick x 6″ x 10″ long aluminum angle.

Installation

DIY or Let The Pros Handle It for You

Pro Installation Services Available

Inventive Garage coordinates professional installation services in most areas of the country. (Separate fees apply.)

We also provide your own handyman or contractor with expert support at no charge.

Please contact us at 800-948-7780 for more details.

Alternating Tread Stairs to Roof Hatch

Alternating Tread Stairs with Walk-Thru

Alternating Tread Stairs with Walk-Thru and Platform

Alternating Tread Stairs Crossover

About the Brand

Precision Ladders is a leading U.S. manufacturer specializing in commercial-grade access solutions, including aluminum fixed ladders, ships ladders, and automated folding stairways. With decades of industry experience, the company serves architects, builders, and facility managers across North America. Precision Ladders is known for its focus on safety, space efficiency, and code compliance, offering reliable access products designed to meet the demands of modern commercial and industrial spaces.

Warranty

1-Year Limited

Why Buy from Inventive?

We're The Storage and Organization Experts

Fast Delivery USA wide

Price Match Guarantee: We'll beat any price

No Sales Tax outside New York

30-Day Easy Returns

Free Design Service

Authorized Dealer for all top brands

Superhuman Customer Service

100% Quality Assured

▶ Click Here ◀ for a Complete List of Reasons Why Inventive Is Your Best Choice

Shipping

Enjoy hassle-free delivery with economical flat-rate shipping. Guaranteed safe delivery with tracking and insurance included.

▶ Click Here ◀ for Complete Shipping Details

Precision Ladders Alternating Tread Stairs Reviews

Expert Design Assistance – Free!

Easy Returns Policy

Fast and Free Shipping

100% Satisfaction Guarantee

Description
Specifications
Accessories
Why Buy From Us

Description

A space-saving stair system designed for steep or compact areas, Precision Ladders’ Alternating Tread Stairs provide safe, OSHA-compliant access with a sturdy, slip-resistant design—perfect for roof hatches, platforms, mezzanines, and tight utility spaces.

Specifications

Dimensions and Specifications

Detailed Specs

Specification	Details
Material:	All components are constructed from aluminum alloy 6005-T5
Stringers:	3″ x 2″ x 1/8″ aluminum tubular side rails with a 10″ x 1/4″ center stringer
Treads:	Aluminum bar grating with deeply serrated surfaces for maximum traction
Handrails:	1-1/4″ Schedule 40 aluminum pipe, providing a 1.66″ OD, with internal aluminum fittings
Tread Width:	24″ standard for roof hatch access 28″ for walk-thru models
Tread Depth:	Minimum of 5 inches (127 mm), with a projected tread depth of at least 8-1/2 inches (216 mm)
Riser Height:	Maximum of 9-1/2 inches (241 mm)
Angle of Incline:	Available in either 56° or 68°, complying with OSHA standards
Load Capacity:	Designed to support up to 1,000 pounds
Finish Options:	Standard: Mill finish Optional: Anodized finish Powder-coated finish
Configurations:	Walk-Thru: Features a 42″ handrail extension for accessing platforms, landings, or other elevated work surfaces. Roof Hatch Access: Designed for interior access to roof hatches. Platform Access: Leads directly to a platform, suitable for various applications. Crossover: Incorporates a landing platform at the top or between two stairs, ideal for bridging over obstacles.
Additional Features:	Handrail Height: Between 30 inches (762 mm) and 34 inches (864 mm) above tread nosings, as per OSHA guidelines. Mounting Brackets: Floor Brackets: 4″ x 4″ x 1/4″ aluminum angle. Top Brackets: Sized based on stair's rise and run, typically 4″ to 6″ tall x 2″ mounting flange x 1/4″ thick x 6″ x 10″ long aluminum angle.