AdjustaStairs™ Specifications and How It Works
Technical details, materials, installation guide, and OSHA compliance information for the AdjustaStairs™ adjustable temporary stair system. Questions? Call (800) 360-6115.
Find the Right AdjustaStairs™ for Your Reach
Enter the height you need to reach, pick a width, then choose a model. Every compatible model shows its run, its angle and where that angle sits against the OSHA stairway range.
Estimate only. Final configuration depends on site conditions, anchoring and your project's fall-protection plan.
Compatible models for 10'
Not shown: 6, 8, 10, 12 steps reach up to 9' 7" · 22 to 40 steps start at 11'.
- 14 StepStandard
Height range 7' to 11' 2"
- Run
- 9.26 ft
- Angle
- 47.19°
Within OSHA 30–50° range
- 16 StepStandard
Height range 8' to 12' 9"
- Run
- 11.93 ft
- Angle
- 39.98°
Within OSHA 30–50° range
- 18 StepStandard
Height range 9' to 14' 4"
- Run
- 14.36 ft
- Angle
- 34.85°
Within OSHA 30–50° range
- 20 StepStandard
Height range 10' to 16'
- Run
- 16.78 ft
- Angle
- 30.8°
Within OSHA 30–50° range
Built from Aircraft-Grade Aluminum
ATI Construction Products uses aircraft-grade aluminum throughout for the ideal balance of strength, weight, and durability on real job sites.
- ✓Aircraft-grade aluminum frame: strong, lightweight, and rust-resistant
- ✓Non-slip step surfaces for safe footing in all weather
- ✓Welded construction at all critical stress points
- ✓Powder-coated finish for durability and corrosion resistance
- ✓Heavy-duty locking mechanism: no tools required
- ✓Engineered to meet OSHA 1926.1051 load requirements
OSHA Compliance Reference
AdjustaStairs™ Models and Weight Ratings
AdjustaStairs™ are available in two model families, each available in 24-inch, 36-inch, or 48-inch widths.
Standard AdjustaStairs™
660 lb Weight Rating
| 6 Step | 3' to 4'9" |
| 8 Step | 4' to 6'4" |
| 12 Step | 6' to 9'7" |
| 16 Step | 8' to 12'9" |
| 20 Step | 10' to 16' |
High-Access AdjustaStairs™ with Support Truss
1,100 lb Weight Rating
| 22 Step | 11' to 17'2" |
| 28 Step | 14' to 22'4" |
| 34 Step | 17' to 27'2" |
| 40 Step | 20' to 32' |
The H-Brace accessory increases a Standard unit's load capacity to 1,100 lbs, and the Joiner Kit connects two units for High-Access configurations. Crane hooks are available for lifting and repositioning larger installs. See full accessory details in the AdjustaStairs™ brochure (PDF).
How to Set Up AdjustaStairs™
Tool-free installation with a two-person crew, done in minutes.
Select Configuration
Choose the AdjustaStairs™ model for your roof elevation. Call (800) 360-6115 for expert guidance.
Position the Team
One worker positions the base at the building while a second worker goes to the top. No crane or special equipment needed.
Self-Level and Lock
AdjustaStairs™ self-levels into place and locks securely for stable, code-compliant access.
Verify and Use
Confirm stability, then use safely per OSHA 1926.1051 requirements.
Move Between Sites
Disassembles quickly and transports in standard vehicles to the next job site.
Repeat Anywhere
Same system works across commercial, residential, and industrial projects in all 50 states.
Where AdjustaStairs™ Is Used
Commercial Roofing
OSHA-compliant access for roofing crews on commercial buildings, warehouses, and large-scale roofing projects. See how to choose temporary roof access.
Residential Construction
Safe access for framing, roofing, HVAC, and electrical crews on new home construction. Read the OSHA stairway requirements for job sites.
Steel Erection
Access elevated structural steel during erection phases before permanent stairs are installed.
HVAC and Mechanical
Repeated safe rooftop access for HVAC, plumbing, and mechanical crews.
Bridge and Infrastructure
Access systems for bridge and infrastructure projects where conventional stairs are impractical.
Industrial Facilities
Access for maintenance, inspection, and construction on industrial and manufacturing facilities.
Technical Questions Answered
What materials is AdjustaStairs™ made from?
AdjustaStairs™ uses lightweight aircraft-grade aluminum that is durable for daily job site use while light enough for two workers to carry and position. ATI Construction Products engineers every system to balance job site demands with OSHA safety requirements.
How many workers are needed to install AdjustaStairs™?
AdjustaStairs™ typically takes two workers to set up: one positioned at the base and one at the top. The system self-levels into place and locks securely. No tools are required, making it fast to deploy and redeploy across multiple project locations.
Can AdjustaStairs™ be reused across multiple job sites?
Yes. AdjustaStairs™ is a portable temporary system designed to move with the crew from project to project. Its adjustable height adapts to different roof elevations and site conditions across all project types: commercial, residential, and industrial.
How does AdjustaStairs™ compare to a ladder?
OSHA 1926.1051 requires stairways when elevation changes exceed 19 inches and the task requires frequent access. AdjustaStairs™ provides a safer, OSHA-compliant alternative that reduces fall risk, allows workers to carry materials safely, and improves site productivity.
What height range does AdjustaStairs™ cover?
Standard AdjustaStairs™ (660 lb rating) cover 3 to 16 feet in 6 to 20-step configurations. High-Access AdjustaStairs™ with Support Truss (1,100 lb rating) cover 11 to 32 feet in 22 to 40-step configurations. All models are available in 24-inch, 36-inch, or 48-inch widths. See the table above or download the full brochure (PDF) for every configuration.
Ready to Order AdjustaStairs™?
Same-day quotes. Nationwide shipping from California.