What Are Altrex Swing Stages?
Definition: Altrex swing stages are modular suspended work platforms manufactured by Altrex, a Netherlands-based maker of aluminum access equipment. Built from patented extruded aluminum sections, they are assembled into two-point or multi-point suspended scaffolds, hung from roof rigging by wire rope, and raised and lowered by electric or air-powered traction hoists. Altrex platforms are known for their light weight, strength, and the wide range of configurations — straight runs, corners, double decks, and double-wide platforms — that can be built from one modular system.
The core of the Altrex line is the MHB modular suspended platform, offered in the MHB 60 and newer MHB 80 models. Platform sections pin together to reach the length a job requires, then attach to end stirrups or walk-through stirrups that connect to the hoists. Because every piece is modular, a contractor can build anything from a short single-worker basket to a long multi-section stage from the same inventory.
Altrex platforms are especially valued for wrapping around buildings. Fixed corner sections come in 30, 45, 60, and 90-degree angles, and an adjustable corner allows other angles for irregular facades. Altrex platforms are typically paired with third-party hoists such as Bisomac and Tractel units. Through Scaffold Exchange, you can find vendors across the U.S. who carry Altrex swing stage systems and compare their inventory, rental rates, and availability in your area.
Key Components of an Altrex Swing Stage System
An Altrex swing stage combines Altrex platform components with compatible hoists, wire rope, and roof rigging to create a complete suspended scaffold system.
Modular Platform Sections
Extruded aluminum deck sections (MHB 60 or MHB 80) that pin together end-to-end to create the required platform length, with integrated guardrails and toe boards.
End & Walk-Through Stirrups
Stirrups mount the hoists to the platform. End stirrups attach at each end; walk-through stirrups allow workers to pass through, enabling longer or multi-point configurations.
Corner & Special Sections
Fixed 30°, 45°, 60°, and 90° corner sections, an adjustable corner, and double-deck, double-wide, and boiler stage options for complex building shapes.
Traction Hoists
Electric or air-powered traction hoists that climb the suspension wire rope. Altrex platforms are commonly paired with Bisomac or Tractel hoists — confirm stirrup and hoist compatibility with your vendor.
Roof Rigging & Wire Rope
Outrigger beams, parapet clamps, davits, or roof anchors with counterweights or tiebacks support the suspension wire ropes. Rigging must be engineered for the system's load.
Common Applications & Job Site Uses
Altrex swing stages are used on light to medium-duty facade work where crews need efficient vertical access across the face of a building. They are common on high-rise construction, restoration, and maintenance projects throughout the United States.
High-rise facade restoration and masonry repair
Curtain wall and window installation or replacement
Exterior painting, caulking, and sealant work
Window cleaning and exterior building maintenance
Wrap-around corner work on irregular or curved facades
Boiler, tank, and silo interior access using boiler stage configurations
Concrete repair and waterproofing on parking structures and towers
Projects where ground-supported scaffolding is impractical or too costly
How Altrex Compares to Other Motorized Scaffolding Systems
Altrex is one of several major suspended platform systems. Here is how it compares to other motorized access options and which projects each suits best.
Widely available rental system
- Large North American rental network
- Platforms and hoists from one supplier
- Broad range of modular platform options
- Best when local rental availability is the priority
U.S.-based platform and hoist maker
- Modular aluminum platforms and matching hoists
- Integrated platform-and-hoist packages
- Boiler and specialty platform options
- Best when matching existing Sky Climber inventory
Modular aluminum suspended platform
- Lightweight patented aluminum extrusion
- Fixed and adjustable corner sections
- Double-deck, double-wide, and boiler configurations
- Best for irregular facades and wrap-around work
Hoist-focused suspended access
- Known for Tirak traction hoists
- Hoists often paired with other platform brands
- Electric and air-powered hoist options
- Best when hoist performance is the priority
Permanent roof-mounted access
- Permanently installed on the building
- Engineered for one specific structure
- No rigging setup for each use
- Best for ongoing maintenance, not temporary projects
Find Altrex Swing Stage Vendors Near You
Use the Scaffold Exchange map to search by location, filter by equipment type, and connect directly with local suppliers who carry Altrex swing stages and suspended platforms.
OSHA Compliance & Safety Standards
Altrex swing stages used on U.S. job sites must comply with OSHA standard 29 CFR 1926.451, which sets general requirements for all scaffolds including suspension scaffolds, along with the two-point adjustable suspension scaffold requirements in 29 CFR 1926.452(o). Workers on a two-point suspension scaffold must be protected by both a guardrail system and a personal fall arrest system. Always assemble the platform exactly as the manufacturer's tested configurations specify and never exceed the rated working load for the configured length.
- Guardrails and toe boards installed on the platform
- Personal fall arrest tied to an independent lifeline for each worker
- Roof rigging able to resist four times the tipping moment of the scaffold
- Counterweights secured to the outrigger beams and non-flowable
- Hoists tested and listed by a qualified testing laboratory
- Scaffold inspected by a competent person before each work shift
1926.451
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