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The galvanised steel C-channel end post (100PFC) is used at the start and end of a retaining wall, or wherever it terminates cleanly — its C-shape accepts sleepers from one side only. Hot-dip galvanised to AS/NZS 4680, in lengths from 400 to 3200mm, for 75mm & 80mm concrete and timber sleepers. Australian-made, delivered Australia-wide by Retaining Walls Direct.
Written and product-checked by the Retaining Walls Direct team — supplying steel-post retaining wall systems across Australia. Last updated: June 2026.
C-channel (Parallel Flange Channel) posts give a neat structural termination at wall ends and starts. Use them with H-beam middle posts and corner posts to build the full concrete sleeper wall.
Post length = the retained height above ground plus embedment. As a rough guide allow embedment roughly equal to the retained height (a 1.0m wall ≈ 2.0m post); confirm post size, spacing, footing and embedment with an engineer. See the steel post sizing guide.
| Section | 100PFC (Parallel Flange Channel), C-channel |
|---|---|
| Role | End / start post — accepts sleepers one side |
| Lengths | 400 – 3200mm |
| Fits | 75mm & 80mm concrete and timber sleepers |
| Steel thickness | 5mm |
| Galvanising | Hot-dip galvanised to AS/NZS 4680 |
| Compliance | AS 4678-2002 Earth-retaining structures |
| Brand | Retaining Walls Direct (Australian-made) |
Fence-bracket and base-plate welding available on request.
Add post caps, fence brackets & hardware and drainage — a drainage kit, ag pipe and geo matting. See how to build a concrete sleeper retaining wall.
For walls over 1.0m, reactive clay, surcharge loads or fences above the wall, consult a structural engineer (engineered walls over 1 metre), and always plan drainage.
Send your postcode and quantities for a freight quote, or contact the team.
What's an end (C) post?
A C-channel post that accepts sleepers from one side — used to start or finish a wall cleanly.
What length do I need?
Retained height plus embedment — roughly double the wall height to start; confirm by engineering.
What sleepers does it fit?
75mm and 80mm concrete and timber sleepers.
Can you deliver to me?
We deliver across most of Australia. Send your postcode and quantities for a freight estimate.
