- Made in North Devon since 1973
- BSI Kitemark ready-mixed concrete
- Manufactured to applicable British Standards
- UK-wide & European delivery
Agricultural · silage · push walls
Silage Clamp Walls.
Acid-tight. Push-rated. Stack and seal.
What are precast silage clamp walls?
Precast prestressed silage clamp panels at heights of 1.0, 1.2 and 1.5 m (3'3", 3'11" and 4'11"), cast in sulphate-resisting C50/60 concrete (CEM III/A) to the applicable British Standard exposure class, designed to Eurocode 2. Acid-resistant for grass, maize and wholecrop silage; vertical cantilever to your engineer’s retained height with no supporting posts. Please call to check current yard stock or current lead times.
WCCP prestressed clamp panels. Heights of 1.0m, 1.2m and 1.5m (3'3", 3'11" and 4'11") at thicknesses of 95mm, 145mm or 180mm (4in, 6in or 7in). Custom lengths to order plus 15' and 20' standard lengths. The 180mm Vertical Cantilever Panels can stand without supporting posts, to the retained height and surcharge your engineer specifies.
- · 1.0 / 1.2 / 1.5m high (3'3"/3'11"/4'11")
- · 95 / 145 / 180mm thick (4/6/7in)
- · 15' & 20' standard
- · Vertical cantilever
- · No supporting posts
Prestressed Panels
Three thicknesses, three heights.
95mm, 145mm or 180mm thick (4in, 6in or 7in) at 1.0m, 1.2m and 1.5m heights (3'3", 3'11" and 4'11"). Custom lengths to order, plus 15' and 20' standard lengths.
| Thickness | Heights available | Lengths | Typical use |
|---|---|---|---|
| 95mm (4in) | 1.0m (3ft3in), 1.2m (3ft11in), 1.5m (4ft11in) | Custom + 15' & 20' standard | Lighter clamp side walls and bay divisions |
| 145mm (6in) | 1.0m (3ft3in), 1.2m (3ft11in), 1.5m (4ft11in) | Custom + 15' & 20' standard | Mid-size clamps; cantilever heights reduced 0.3–0.4m (1ft–1ft4in) vs 180mm |
| 180mm (7in) | 1.0m (3ft3in), 1.2m (3ft11in), 1.5m (4ft11in) | Custom + 15' & 20' standard | Standard clamp panels; vertical cantilever rated |
Vertical Cantilever Panels
No supporting posts required.
The 180mm panels retain to the heights below in cantilever — no supporting posts in the wall run. 145mm panels can be used in cantilever with retained heights reduced by 0.3–0.4m (1ft–1ft4in).
| Service | Retained height (180mm) | Notes |
|---|---|---|
| Slurry retention | To your engineer's design | Tell us the retained depth and panel thickness specified |
| Silage with vehicle surcharge | To your engineer's design | Surcharge from the filling vehicle |
| Earth retention | To your engineer's design | Retained height from the section drawing |
Where they go
Common applications.
From a 60-cow grass clamp to a maize clamp at an AD plant — same panel system, same paperwork.
- ·Dairy farm grass and maize silage clamps
- ·Beef finishing-unit feed-stock clamps
- ·AD plant silage clamp feedstock storage
- ·Push walls — driven against during clamp filling
- ·Transition walls between filling bays
- ·Ramp returns and end walls
- ·Effluent collection channels and tank walls
Standards & certification
Cast for the silage environment.
- SSAFO 2018
- Silage, Slurry and Agricultural Fuel Oil regulations — clamp design and capacity.
- British Standards
- Our products are manufactured in compliance with applicable British Standards. For information regarding the specific standards applicable to a particular product, please contact us.
- Eurocode 2
- Concrete structural design — surcharge and vehicle-loading checks.
Configure your clamp
Send wall heights and run length — we will quote it.
Common questions
What do buyers ask about silage clamp walls?
What's the difference between prestressed and reinforced?
Reinforced concrete uses passive steel bars to handle tension. Prestressed concrete uses high-tensile strands tensioned before the concrete cures, putting the panel into permanent compression. The result: thinner, stronger, longer-spanning panels with far better crack resistance — particularly important for slurry and silage applications.
What thicknesses are prestressed panels available in?
Prestressed wall panels are stocked in six thicknesses (95, 120, 145, 180, 230 and 280mm), five widths from 500mm to 1500mm (the panel's installed height) and two lengths, 15ft (4572mm) and 20ft (6096mm). Custom lengths to 6500mm and bespoke details are cast to order.
What affects how long precast concrete lasts?
Two things: sulphate attack (handled by mix design) and impact damage (handled by panel thickness and reinforcement). Both are addressed at the specification stage to suit the exposure class.
Do you offer installation?
No — we manufacture and supply only. We don't have an install team and we don't fit, erect or build in anything we make, on any product line. Installation is down to your groundworker or civils contractor. What we will do is give them what they need to get it right first time: setting-out drawings, lifting anchor positions and fixing details, plus a phone call with the yard if they want to talk it through before the load arrives.
How are products craned into place?
Panels are supplied with cast-in lifting anchors (Halfen-style). Units are delivered by artic or rigid lorry — on site you'll need a telehandler, forklift or crane to unload and position panels, depending on weight.
Related products
Often ordered alongside.
Ready to specify it?
Send heights, run length and the silage type. We will come back with a quote and a lead time.
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