Text 0420 120 105
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In stock · 1–2 business days
65 Series Galvanised Post (for Mini Sleepers)
JD-ST-072 / each
From $12.76
incl. GST
Steel Posts / JD-ST-001
Galvanised H Post for Retaining Walls
From $22.44
incl. GST / each
Hot-dip galvanised steel H posts, the uprights that hold concrete sleepers in a retaining wall. Sleepers slide into the channel on each side, so an H post goes between every bay. Choose 100UC for 75mm and 80mm sleepers, 150UC for 100mm sleepers and walls of about 1.6m to 2.2m, or 200UC and 200UB for high, engineered walls. Lengths run from 400mm to 6.0m.
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.
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01 / Product overview
Choosing the section: 100UC suits 75mm and 80mm sleepers and walls to 1.6m at 1.2m centres. 150UC takes 100mm sleepers for walls of about 1.6m to 2.2m. 200UC and 200UB are for high, engineered walls. See the compare table below.
Choosing the length: post length = wall height + footing depth. Take the footing depth from your wall design or the supplier span table.
Spacing: set posts at the same centres as your sleeper length (for example, 2.0m sleepers at 2.0m centres). Shorter spacing suits higher walls and softer ground.
Also order: C posts for the ends (100PFC with 100UC, 150PFC with 150UC, 200PFC with 200UB), corner posts where the wall turns, post caps, sleeper wedges and concrete for the piers.
In Queensland, walls over 1m high, or walls supporting a driveway, fence or building, generally need an engineered design and council approval.
Engineered walls
The 200UC and 200UB posts are for walls with an engineered design and building approval. Order the section and wall height your engineer specifies.
02 / Detailed specifications
Know exactly what you’re ordering.
- Product code
- JD-ST-001
- Application
- Joiner post between bays in concrete sleeper retaining walls
- Material
- Hot-dip galvanised universal column or beam: 100UC 14.8kg/m, 150UC 23.4kg/m, 200UC (5.8m), 200UB 18.2kg/m
- Finish
- Hot-dip galvanised
- Strength and reinforcement
- 100UC fits 75mm and 80mm sleepers (walls to 1.6m at 1.2m centres); 150UC, 200UC and 200UB fit 100mm sleepers (see span table)
- Compliance
- Steel to AS/NZS 3679.1; galvanised to AS/NZS 4680; STA Consulting post specification tables
- Sales unit
- each
- Weight
- 5.92 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.
| Section | Shape and job | Weight (kg/m) | Fits sleepers | Typical use |
|---|---|---|---|---|
| 65 Series | H, C and corner posts | – | 65mm mini sleepers, 50mm composite | Low garden walls and edging with mini sleepers |
| 100 PFC | C post: end of a run | 8.3 | 75mm and 80mm | Ends of 100 series walls |
| 100 UCThis product | H post: joiner mid-run (also sold with welded reo) | 14.8 | 75mm and 80mm | The standard post for most home retaining walls |
| 100 Corner | Two 100 PFCs welded at 90° or 45° | 2 × 8.3 | 75mm and 80mm | Turning a corner in a 100 series wall |
| 150 PFC | C post: end of a run | 17.7 | 100mm | Ends of 150 series walls |
| 150 UC 23.4This product | H post: joiner mid-run | 23.4 | 100mm | Higher home walls, longer spans, or walls with a load behind them (driveway, fence, slope) |
| 150 UC 37.2 | H post: heavy joiner (Civil Series reo) | 37.2 | 100mm | Engineered walls that need more strength in the 150 size |
| 180 UB | I post: joiner (Civil Series reo) | 18.2 | 100mm | Engineered walls |
| 200 UBThis product | I post: joiner mid-run | 18.2 | 100mm | High engineered walls: a deep, stiff post that stays light to handle |
| 200 PFC | C post: end of a run | 22.9 | 100mm | Ends of 200 series engineered walls |
| 200 UCThis product | H post: heavy joiner | 46.2 | 100mm | The 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.
04 / Product FAQs
Before you order.
What is a galvanised H post for a retaining wall?
A galvanised H post is the hot-dip galvanised steel upright that holds concrete sleepers in a retaining wall. Sleepers slide into the channel on each side, so an H post goes between every bay. We supply it in 100UC, 150UC, 200UC and 200UB sections.
Which H post do I need for my retaining wall: 100UC, 150UC, 200UC or 200UB?
100UC suits 75mm and 80mm sleepers and walls to 1.6m at 1.2m centres. 150UC takes 100mm sleepers for walls of about 1.6m to 2.2m. 200UC and 200UB are for high walls with an engineered design, with 200UC used for walls up to 3.0m in the STA design tables. Use the compare table on this page, and always follow your engineer's design.
What length H post do I need for a retaining wall?
Post length is the wall height plus the footing depth. Take the footing depth from your wall design or the supplier span table. For example, a 1.2m wall in stiff clay typically needs a 1.3m pier, so a 2.4m or 2.8m 100UC post.
What do I order with a galvanised H post?
Order C posts for the ends (100PFC with 100UC, 150PFC with 150UC, 200PFC with 200UB), corner posts where the wall turns, post caps, sleeper wedges and concrete for the piers. In Queensland, walls over 1m high, or walls supporting a driveway, fence or building, generally need an engineered design and council approval.
