Crane-Ready – Preassembled Precision – Stacks, Connects, and Deploys with Speed

STAIRS AND MODULAR BRIDGE SYSTEMS

REVOLUTIONIZING VERTICAL ACCESS ON
JOBSITES NATIONWIDE.

Z-Stack is a modular stair system that’s transforming vertical access across construction and industrial environments. Designed for speed, safety, and scalability, Z-Stack provides a smarter alternative to traditional scaffold-based stair towers. Its pre-engineered components allow for fast deployment, with significantly less labor and installation time required on-site.

In construction, Z-Stack is ideal for multi-floor access on high-rise projects, safe entry and egress in deep excavations, and as a flexible solution for temporary or permanent stair access. For industrial facilities, it offers a reliable and non-invasive way to access rooftops and elevated areas for routine maintenance and inspections without interrupting operations.

Unlike traditional stair systems, Z-Stack can be assembled off-site and craned into position as a fully pre-stacked unit. This reduces disruption and ensures immediate usability once installed. Its robust, rust-resistant aluminum construction supports long-term use, even in harsh outdoor environments, while maintaining a lighter weight for easy transport and repositioning.

Z-Stack meets OSHA standards and includes full-height guardrails, anti-slip treads, and stable landing areas. It eliminates the need for tie-offs or fall protection while climbing, creating a safer, more efficient work environment. Whether for infrastructure projects, industrial sites, or complex builds, Z-Stack is a reliable and adaptable stair access solution that evolves with the jobsite.

LIGHTWEIGHT

Made from durable T6, Marine-Grade Aluminum. Module Weight – 480LBS

EASY TRANSPORT

Flat-Packed components or delivered assembled for easy installation. 

RE-USEABLE

Reconfigurable for each unique site, ensuring safety time and time again.

CRANE LIFTABLE

Modules can be craned individually, or as a completed stack.

FAST INSTALL

Pre-Engineered for quick, reliable installation, with no specialty tools required.

ROOF ACCESS

Avoid the OSHA fines, and simplify roof access with a safe, efficient stair tower.

KEY FEATURES

Modular box stair system

Stack modules to create stair towers of any height

Quick-and-easy install & relocate; no scaffolding

Strong yet lightweight aluminium structure

Ideal for complex project environments

Assemble off-site and crane into place

Able to be flat-packed for storage or transport

Modules provide the ultimate in flexibility

2.5kPA weight rating

Uses less space than scaffolding

QUESTIONS?

Speak with a specialist today to explore the best solution for your site.

STANDARD Z-STACK MODULES

Compact Optons Available for a smaller footprint. 

Z-STACK TOP
MODULE

 

DIMENSIONS
LENGTHWIDTHHEIGHT
9’-4”6’-10”4’-2”
COMPONENTS
QTYDESCRIPTION
1Top handrail frame assembly
236” wide 45-degree Z-Stairs with 4 Plank landing at top and bottom
1Middle handrail frame
4High strength steel joiners, also rated for craning

Z-STACK STANDARD/MIDLEVEL
MODULE

 

DIMENSIONS
LENGTHWIDTHHEIGHT
9’-4”6’-10”8’-8”
COMPONENTS
QTYDESCRIPTION
1End frame
2Gated end frame
1Standard side brace
436” wide 45-degree Z-stairs with 4 plank landing at top and bottom
4Middle handrail frame
4Aluminum joiners, also rated for craning for one module

Z-STACK BOTTOM
MODULE

 

DIMENSIONS
LENGTHWIDTHHEIGHT
9’-4”6’-10”8’-8”
COMPONENTS
QTYDESCRIPTION
1End frame
2Gated end frame
1Standard side brace
1Access side brace
336” wide 45-degree Z-stairs with 4 plank landing at top and bottom
1Middle handrail frame
4Aluminum joiners, also rated for craning for one module
4Adjustable scaffold base jacks per Z-Stack assembly

Z-STACK COMPONENTS AND ATTACHMENTS

Standard and Add-On Components

END FRAME

Each Z-Stack frame includes integrated joiners with single-box crane hooks, allowing for safe and efficient lifting of individual modules.

SIDE BRACE FRAME

Provides gated access at every 4-foot level and uses cross-bracing between end frames for enhanced structural rigidity.

Z STAIRS

Designed to position easily over frame horizontals and bolt securely into place while adding extra structural bracing.

MIDDLE HANDRAIL

Includes an inner handrail for continuous dual-side support, ensuring safe access while ascending and descending the stairs.

BRACE FRAME

Constructed from welded box-section extrusions with rails precisely spaced to meet OSHA safety requirements.

CRANE LIFTING SLOT

Integrated lifting hooks enable entire pre-assembled towers to be safely lifted into position.

GATED END FRAME

Enables greater alignment and versatility, with attachment points for bridges to connect towers or adjacent structures.

TOP INSIDE HANDRAIL

Connects securely to the top stair and lower inner handrail to complete the safety enclosure.

BASE ELEMENT

Features a scaffold base jack held captive within the frame to prevent dislodgement during craning and relocation.

SCAFFOLD CASTER

Castors can be attached to make the unit fully maneuverable for repositioning around site.

CANTILEVER

A cantilever platform can be added to extend the Z-Stack landing, providing access beyond the tower’s base footprint.

BRIDGES

Bridges can be added to seamlessly connect the Z-Stack landing to adjacent work areas for continuous, elevated access.

ADJUSTASTAIRS

Optional AdjustaStair add-on allows for precise alignment between the Z-Stack landing and varying access points.

U BOLT BRACKETS

Offer flexible anchoring options and should be used every third frame or when exceeding the OSHA 4:1 height-to-width ratio.

DECKING

12-plank deck design that forms a secure horizontal cross-back arrangement for added structural integrity.

GET Z-STACK ON YOUR PROJECT

Our team of access specialists is dedicated to helping you find the perfect solution for your unique access challenges. Whether you’re facing complex requirements or straightforward tasks, we’ll guide you every step of the way. Simply share your needs with us, and we’ll design, recommend, and deliver the ideal solution, ensuring a seamless experience from start to finish!

Contact us today to find your perfect Z-Stack system!