When it comes to construction,
scaffolding prop jacks (also known as acrow props, steel props, or shoring jacks) are indispensable temporary vertical support tools. They play a critical role in ensuring the stability and safety of formwork, scaffolding systems, and structural components during construction, renovation, or maintenance work. However, not all scaffolding prop jacks are the same—different types are designed to meet varying load requirements, height needs, and project scenarios. In this article, we’ll break down the main types of scaffolding prop jacks, their key features, and how to select the perfect one for your project.
1. Light Duty Scaffolding Prop Jack
Light duty scaffolding prop jacks are the most common and versatile option for small-scale projects. Designed for relatively low load-bearing requirements, they are lightweight, easy to handle, and cost-effective, making them ideal for residential and light commercial use.
Key Specifications:
Load capacity: 10–20 kN (kilonewtons)
Adjustable height range: 1.0–2.5 meters
Material: High-quality carbon steel (Q235 is common) with a corrosion-resistant finish (hot-dip galvanizing, painting, or powder coating)
Tube size: Typically 48mm (inner tube) × 60mm (outer tube)
Top and base plate: 120×120mm or 150×150mm, 3–5mm thick, to distribute load evenly
Applicable Scenarios: Residential renovations (such as ceiling installation, wall plastering), small-scale formwork support for residential floors, temporary bracing for light structures, and interior construction work. They are also perfect for projects where mobility and easy installation are priorities.
2. Medium Duty Scaffolding Prop Jack
Medium duty scaffolding prop jacks bridge the gap between light and heavy duty options, offering increased load capacity and durability for more demanding projects. They are widely used in mid-rise residential and general industrial construction, where the load requirements are higher than small renovations but not as extreme as large-scale infrastructure projects.
Key Specifications:
Load capacity: 20–40 kN
Adjustable height range: 1.5–3.0 meters
Material: High-strength carbon steel (Q345 is preferred) with enhanced corrosion resistance (hot-dip galvanizing is recommended for outdoor or humid environments)
Tube size: 63mm (inner tube) × 76mm (outer tube) for added strength
Top and base plate: 150×150mm, 5–6mm thick, to handle higher loads without deformation
Applicable Scenarios: Multi-story residential buildings, general industrial workshops, small commercial buildings, formwork support for beams and slabs in mid-rise structures, and temporary support during building expansions. They are durable enough for long-term use on construction sites while remaining easy to adjust and transport.
3. Heavy Duty Scaffolding Prop Jack
Heavy duty scaffolding prop jacks are engineered for high-load, large-scale construction projects where safety and stability are non-negotiable. They feature a robust design, thicker materials, and enhanced structural integrity to support heavy concrete formwork, large beams, and high-rise structures.
Key Specifications:
Load capacity: 40–100+ kN (customizable for even higher loads)
Adjustable height range: 2.0–4.0 meters (or more, with custom extensions)
Material: High-strength alloy steel or thick-walled carbon steel, with a heavy-duty hot-dip galvanized finish to resist corrosion and wear
Tube size: 76mm (inner tube) × 89mm (outer tube) or larger, with reinforced walls for added strength
Top and base plate: 150×150mm to 200×200mm, 6–8mm thick, often with ribbed design to prevent slipping and distribute heavy loads
Applicable Scenarios: High-rise buildings, bridges, large-span industrial plants, tunnel construction, precast concrete installation, and heavy formwork support for large beams and slabs. They are also used in demolition and renovation projects where temporary support for heavy structural components is required to prevent collapse.
Specialized Types of Scaffolding Prop Jacks
In addition to the three main types, there are specialized scaffolding prop jacks designed for unique project needs:
Adjustable Extension Props: Feature detachable extensions to extend the height range, making them suitable for projects with varying ceiling heights or large-span structures.
Anti-Rotation Props: Equipped with a locking mechanism to prevent rotation during use, ensuring stability in high-wind environments or when supporting uneven loads.
Low-Height Props: Designed for low-clearance areas (such as basements, crawl spaces, or under beams) with an adjustable height range of 0.5–1.5 meters.
How to Choose the Right Scaffolding Prop Jack
Selecting the correct scaffolding prop jack depends on three key factors: load capacity, height requirements, and project type. Always calculate the maximum load the prop will need to support (including the weight of formwork, concrete, workers, and equipment) and choose a prop with a load capacity that exceeds this value to ensure safety. Additionally, consider the height of your project and the environment (indoor vs. outdoor, humid vs. dry) to select the appropriate material and finish.
Whether you’re working on a small residential renovation or a large-scale infrastructure project, there’s a scaffolding prop jack designed to meet your needs. By understanding the different types and their applications, you can ensure the safety, efficiency, and success of your construction project.
Looking for high-quality scaffolding prop jacks for your next project? Contact us today to learn more about our full range of light, medium, and heavy duty props, all manufactured to industry standards for durability and safety.
