Understanding AS 1657:2018 – Selection of Access - Limits of Slope

When designing safe access systems in industrial and commercial settings, compliance with AS 1657:2018 is essential. This Australian Standard outlines the requirements for fixed platforms, walkways, stairways, and ladders—ensuring safe movement in elevated or potentially hazardous areas.

At SolidDraft Design Solutions, we specialize in designing structures that meet the latest safety codes, including AS 1657:2018. One of the most critical factors in this standard is the selection of access based on slope limits. Let’s break it down.

What Is AS 1657:2018?

AS 1657:2018 provides guidelines for the safe design, construction, and installation of:

• Fixed platforms

• Walkways

• Stairways

• Ladders

It ensures that people can move safely around a facility, especially when accessing machinery or elevated workspaces.

Slope-Based Access Selection: What the Standard Says

Choosing the correct type of access depends heavily on the slope or incline of the area. Here are the key guidelines:

✅ 0° to 7.5° – Use Walkways

For slopes between 0 and 7.5 degrees, walkways are suitable. These should have a slip-resistant surface and include handrails where necessary.

✅ 7.5° to 20° – Use Stepped Walkways

Between 7.5° and 20°, stepped walkways should be used. These shallow steps provide better traction and reduce fatigue over sloped areas.

✅ 20° to 45° – Use Stairways

For inclines between 20° and 45°, stairways must be installed. These provide safer, more stable footing and must comply with tread and riser dimensions as outlined in AS 1657.

✅ Over 45° – Use Ladders

If the slope exceeds 45 degrees, then fixed ladders are required. These must meet specific safety criteria, including rung spacing, load ratings, and anchorage requirements.

Why Following Slope Limits Matters

Choosing the correct access method ensures:

• Compliance with Australian safety regulations

• Minimized risk of falls or injury

• Improved usability and ergonomics for workers

• Lower liability for businesses and contractors

At SolidDraft Design Solutions, we incorporate these slope-based decisions early in the design process to ensure a compliant and safe structure from day one.

Trust SolidDraft Design Solutions for AS 1657:2018 Compliance

We provide custom 2D and 3D modeling tailored for fabrication, construction, and innovation. Whether you need compliant walkways, stairways, ladders, or fixed platforms, we’ll help you select and design the right access solution for your project’s needs.

Let’s Build Safer Spaces Together

📞 Ready to bring your project to life with AS 1657-compliant designs? Contact SolidDraft Design Solutions today for expert modeling and compliant access solutions.