200 Heavy Duty Series Steel Posts Brisbane & Queensland

200 Heavy Duty Series Steel Posts for Retaining Walls — Brisbane & Queensland

The 200 Heavy Duty Series represents the upper tier of our steel post range — engineered for retaining walls that demand maximum structural capacity. Walls over 2.0m, major surcharge loads from roads or structures, commercial and civil retaining applications, and sites with severely expansive soils all call for the 200 Series. With a 200mm flange width and the highest section modulus in our standard range, these posts are specified by structural engineers for Queensland's most demanding retaining wall projects. Retaining Walls Direct has supplied heavy duty posts to QLD engineers, builders, and civil contractors for many years.

Features & Specifications

• Hot-dip galvanised to AS/NZS 4680 — maximum corrosion resistance in Queensland's subtropical conditions
• 200mm flange width — the highest standard section modulus in our post range
• Available in C-Channel and H-Beam (UC) profiles
• Engineered to accept 75mm and 100mm concrete sleepers
• Suitable for walls from 2.0m to 3.0m+ (engineer certification mandatory)
• Specified for commercial, civil, and high-surcharge retaining wall applications across Queensland

When to Specify the 200 Series

The 200 Heavy Duty Series is required when:

• Your wall exceeds 2.0m in height
• The project involves major surcharge loading — road traffic, heavy vehicles, or large structures above the wall
• The application is commercial, industrial, or civil infrastructure
• Your structural engineer has specified 200 Series posts in their engineered design
• The site has severely expansive soils or poor drainage with high hydrostatic pressure behind the wall

For walls under 2.0m, see our 150 Heavy Duty Series Brisbane or 100 Standard Series Brisbane.

Engineering & Compliance

All walls over 1.0m in Queensland require a building development approval and structural engineer's certification. 200 Series walls will always require a full engineered design. Key references:

• QBCC — Building Approvals Queensland
• Queensland Planning — Development Assessment
• AS 4678-2002 — Earth Retaining Structures
• Retaining Wall Regulations — State-by-State Guide

Delivery Across Brisbane & Queensland

We deliver 200 Series steel posts direct to your site across Brisbane metro, the Gold Coast, Sunshine Coast, Ipswich, Logan, Moreton Bay, and regional QLD. Bulk and trade pricing available — open a trade account for priority pricing and faster dispatch.