J-strut | 5 Props + 1 Pinion

The Size 1 J-strut follows the conventional sizing (established by Acrow Engineers nearly a century ago). Unlike typical alternatives, J-struts comprise a superior tube construction which means the Size 1 can safely support 32kN when fully closed (175cm) and 19kN when fully extended (310cm), provided that the prop is loaded concentrically and max 1.5 degrees out-of-plumb. The user guide, linked below, contains further guidance on the safe working envelope and standard operating procedures.

Modifying existing props is inherently unsafe - there's simply too much variation in tube construction. Not only is it impossible to specify a safe load capacity, but a retrofitted component might seem to fit initially then later fail under load. Instead, we manufacture and assemble our props from scratch, ensuring that the final product has full traceability and meets rigorous safety standards. This means that J-struts are of the highest quality with exceptional functionality and well-defined load capacity.

To deliver improved safety and performance, J-struts have a slightly higher upfront cost compared to typical props. However, it's essential to understand that this represents an investment in quality and traceability as much as improved safety and performance. Crafted from high-grade steel, J-struts are built to outlast and outperform conventional alternatives with precision-engineered components that are fully traceable and finished with a variety of high-spec protective coatings. On top of their superior construction, J-struts have three key the key operational advantages, they are:

Quicker: Not only are they height adjustable in a matter of seconds, they can be positioned, adjusted and held plumb by 1 person, reducing in labour-hours by over 50%.

Safer: J-struts eliminate risks and mitigate hazards that are inherent with typical acrows. Say goodbye to repetitive strain injuries, bruised knuckles, pinched fingers, and skin punctures from frayed wires.

Easier: By applying a modern twist to a century-old method, J-struts enables effortless control and precise adjustment at the press of a trigger.

The award-winning J-Strut telescopic steel props are commonly used across temporary structural support and formwork applications on construction and renovation projects.

Designed to reduce manual handling, J-Strut helps make prop setup faster, safer and more efficient. By reducing the labour involved in adjusting and setting up props, J-Strut can help improve on-site productivity by approximately 50%.

For example, assuming an average construction labour rate of $40 per hour in Australia, this could represent an estimated labour saving of around $20 per hour worked.

When factoring in the added benefits of reduced injury risk, less physical strain and improved team efficiency, J-Strut may contribute to a conservative 20% increase in Gross Value Added (GVA) per hour worked.

Before J-Strut:
Based on an estimated GVA of $80 per hour worked in the Australian construction industry.

After switching to J-Strut:
With an estimated 20% productivity increase, the forecasted GVA per hour worked would increase to $96 per hour.

This is calculated as $80 x 1.20, reflecting the estimated 20% improvement in productivity.