Retaining Wall Corner Post (90 and 45 Degree)

Steel Posts / JD-ST-027

Retaining Wall Corner Post (90 and 45 Degree)

From $89.76 incl. GST / each

A retaining wall corner post made from two 100PFC steel channels welded at 90 or 45 degrees, so a sleeper wall can turn a corner without a join. Sleepers slot into both faces. Hot-dip galvanised for long life in the ground, it suits 75mm and 80mm sleepers and the 100 Series system. Lengths run from 800mm to 2.8m.

Under 50 posts: usually delivered in 1–5 business days. 50 or more: we confirm your delivery date when you order.

Freight is priced to your delivery suburb for most metro areas, or will be confirmed with you before payment.

Trade customer? Add to your quote for trade pricing, or call us.

Angle: 90 Degree
Length: 800mm
Delivery or pick up

Delivered by truck to your site. Freight is calculated at checkout, or confirmed on your quote.

Selected unit price

$89.76

incl. GST / 90 Degree / 800mm / actual length

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01 / Product overview

Choosing the angle: 90 degree for a square corner, 45 degree for an angled turn.

How many: one at every corner in the wall.

Choosing the length: match the H posts in the same section of wall: wall height + footing depth from your design.

Also order: a post cap to finish the top (90 degree left or right hand, or 45 degree), plus 100UC H and 100PFC C posts.

In Queensland, walls over 1m high, or walls supporting a driveway, fence or building, generally need an engineered design and council approval.

Check your wall design

In Queensland, walls over 1m high, or walls supporting a load such as a driveway or building, generally need an engineer's design and council approval. Confirm sleeper and post sizes against your design before ordering.

02 / Detailed specifications

Know exactly what you’re ordering.

Product code
JD-ST-027
Application
90 and 45 degree corners in 100 Series concrete sleeper walls
Material
Two 100PFC channels welded at 90 or 45 degrees, hot-dip galvanised
Finish
Hot-dip galvanised
Strength and reinforcement
Fits 75mm and 80mm sleepers
Compliance
Steel to AS/NZS 3679.1; galvanised to AS/NZS 4680
Sales unit
each
Weight
13.4 kg
Delivery class
Long and heavy vehicle freight

Compare post sections

  • The number is the section's depth in millimetres. A 150UC is about 150mm deep.
  • The weight (kg/m) shows how heavy the steel is. At the same depth, heavier means thicker steel and a stronger post.
  • UC (universal column) is an H shape. It goes mid-run as a joiner, holding a sleeper on each side.
  • PFC (parallel flange channel) is a C shape. It goes at the end of a run, where the sleepers stop.
  • UB (universal beam) is an I shape, deeper than it is wide, so it is very stiff for its weight. It is used in engineered walls.
  • Every post is hot-dip galvanised.
SectionShape and jobWeight (kg/m)Fits sleepersTypical use
65 SeriesH, C and corner posts–65mm mini sleepers, 50mm compositeLow garden walls and edging with mini sleepers
100 PFCC post: end of a run8.375mm and 80mmEnds of 100 series walls
100 UCH post: joiner mid-run (also sold with welded reo)14.875mm and 80mmThe standard post for most home retaining walls
100 CornerThis productTwo 100 PFCs welded at 90° or 45°2 × 8.375mm and 80mmTurning a corner in a 100 series wall
150 PFCC post: end of a run17.7100mmEnds of 150 series walls
150 UC 23.4H post: joiner mid-run23.4100mmHigher home walls, longer spans, or walls with a load behind them (driveway, fence, slope)
150 UC 37.2H post: heavy joiner (Civil Series reo)37.2100mmEngineered walls that need more strength in the 150 size
180 UBI post: joiner (Civil Series reo)18.2100mmEngineered walls
200 UBI post: joiner mid-run18.2100mmHigh engineered walls: a deep, stiff post that stays light to handle
200 PFCC post: end of a run22.9100mmEnds of 200 series engineered walls
200 UCH post: heavy joiner46.2100mmThe heaviest post, for engineered civil and commercial walls

A general guide only. Post size, spacing and footing depth depend on wall height, soil and any load behind the wall. In Queensland, walls over 1m high, or walls supporting a driveway, building or fence, generally need an engineer's design and council approval. Order the section your design specifies.

03 / Shipping

Delivered by truck.
Freight shown on your quote.

Sleepers and posts are too long and heavy for a parcel service. They are delivered by truck, and freight depends on your suburb and the weight of your order.

Lead time

Under 50 posts: usually delivered in 1–5 business days. 50 or more: we confirm your delivery date when you order. Express delivery in 2–3 business days may be available on request. Orders placed after 2pm count from the next business day. We confirm the date with you before you pay.

Delivery area

We deliver this product to Brisbane, Ipswich, Logan, Redlands, Gold Coast, Sunshine Coast, Toowoomba and Gympie. Outside these areas, freight is confirmed with you before payment.

Vehicle access

Allow a safe approach, turning space and a clear, level unloading point. Tell us about narrow gates, steep driveways or overhead obstructions.

Unloading & handling

Confirm who will unload and whether equipment is needed. A forklift, crane or tail-lift is not automatically included.

Freight & timing

Freight is separate from the product price. We confirm the freight charge and delivery window on your quote, before you pay.

Read Shipping & delivery →

04 / Product FAQs

Before you order.

What is a retaining wall corner post?

A retaining wall corner post is made from two 100PFC steel channels welded at 90 or 45 degrees, so a sleeper wall can turn a corner without a join. Sleepers slot into both faces. It is hot-dip galvanised and suits 75mm and 80mm sleepers in the 100 Series system.

What is a 45 degree retaining wall corner post?

A 45 degree retaining wall corner post is made from two 100PFC steel channels welded at 45 degrees, for an angled turn in a concrete sleeper wall. Sleepers slot into both faces. Two 45 degree posts make a softer 90 degree corner with a short bay between them. It is hot-dip galvanised and suits 75mm and 80mm sleepers in the 100 Series system.

Should I use a 90 degree or 45 degree corner post, and what length?

Use a 90 degree post for a square corner and a 45 degree post for an angled turn. You need one post at every corner. For length, match the H posts in the same section of wall: wall height plus footing depth from your design. Lengths run from 800mm to 2.8m.

What do I order with a retaining wall corner post?

Order a post cap (90 degree left or right hand, or 45 degree) to finish the top, plus 100UC H and 100PFC C posts. In Queensland, walls over 1m high, or walls supporting a driveway, fence or building, generally need an engineered design and council approval.

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