90 Degree Corner Steel Post Sydney NSW

90 Degree Corner Steel Posts for Retaining Walls — Sydney & NSW

A 90-degree corner steel post is one of the most commonly needed components in any retaining wall project — wherever your wall turns a right angle at a boundary, garden bed edge, or driveway. Our 90-degree corner posts are purpose-engineered to accept concrete sleepers on both faces at a true right angle, giving you a clean, structurally sound corner without site fabrication or welding. Retaining Walls Direct has supplied builders, landscapers, and DIY homeowners across Sydney and NSW for over 40 years.

Features & Specifications

• Hot-dip galvanised to AS/NZS 4680 — built to withstand Sydney's coastal humidity and soil conditions
• Accepts 75mm and 100mm concrete sleepers on both perpendicular faces
• Available in 100 Series (standard residential) and 150 Heavy Duty Series (commercial/tall walls)
• Pre-drilled and ready to install — no welding or cutting required on site
• Compatible with C-Channel and H-Beam post systems
• Suitable for walls up to 1.8m (engineer sign-off required above 1.0m in most NSW LGAs)

When Do You Need a 90 Degree Corner Post?

Use a 90-degree corner post wherever your retaining wall meets at a right angle. Typical applications in Sydney include:

• Boundary retaining walls turning at property corners
• Raised garden beds with square or rectangular layouts
• Driveway retaining walls meeting a side fence line
• Pool surrounds and level change structures
• Tiered retaining systems on sloped Sydney blocks

For angled turns that aren't 90 degrees, see our 45 Degree Corner Steel Posts Sydney. For straight-run end terminations, see our End Posts & Joiners.

NSW Council & Engineering Requirements

Retaining walls over 600mm in NSW typically require council approval. Walls over 1.0m generally need a structural engineer's certification under the NSW Complying Development Housing Code. Always verify requirements with your local council before starting work. Refer to AS 4678-2002 — Earth Retaining Structures for engineering design guidance.

Delivery Across Sydney & NSW

We deliver 90-degree corner steel posts direct to your site across Sydney metro, the Central Coast, Newcastle, Wollongong, the Blue Mountains, and regional NSW. Bulk and trade pricing available — open a trade account for priority pricing and faster dispatch.

Related Products

• Retaining Wall Steel Posts — Sydney NSW
• C-Channel Steel Posts — Sydney NSW
• H-Beam Steel Posts — Sydney NSW
• 45 Degree Corner Steel Posts — Sydney NSW
• Concrete Sleepers — Sydney NSW

Guides & Resources

• How to Choose the Right Steel Post for Your Retaining Wall
• H-Beam vs C-Channel — Which Do You Need?
• Engineering & Council Rules for Retaining Walls in Australia