Pipe Bedding 20 mm delivered in Oxford
20 mm single size is a clean, high-void stone used for deep trench surround, soakaways and attenuation layers. With no fines it drains freely and does not slump into voids, so it is the default where the surround also has to store or convey water.
Into Oxford and across Oxfordshire we supply it loose by tipper, by grab lorry where a stockpile has to be loaded or reached over a boundary, or in bulk bags for plots a lorry can't discharge into. Stocked aggregates, bedding and topsoil are usually on site within 24–72 hours across OX postcodes. City-centre drops inside the bus-gate network are booked to a timed early-morning window; Harwell, Culham, Didcot and Bicester take full tipper or artic loads to your call-off dates.
Specification
- Nominal size
- 20 mm single size
- Grading
- Clean, washed, fines removed
- Material
- Primary crushed rock or washed gravel
- Void ratio
- Typically around 30% — attenuation duty
- Supply formats
- Loose tipper, grab lorry, artic, bulk bag
- Typical load
- 16–20 t tipper, 28–29 t artic
Lead time
Stocked line — most postcodes in England and Wales are dispatched within 24–72 hours of order confirmation. Scotland and Highland deliveries are typically 3–5 working days. Programmed civils schedules are booked in advance and delivered to your call-off dates.
Typical uses on Oxford sites
- Deep trench pipe surround
- Soakaway and attenuation stone
- Free-draining backfill behind retaining structures
- Filter layers under geotextile-wrapped drainage
Central Oxford work is dominated by restricted access — narrow college lanes, bus gates and conservation-area constraints mean grab and bulk-bag drops often beat an 8-wheel tipper. Out of town it flips: science-park and housing plots take full artic loads of Type 1 and capping against a call-off programme, with muckaway running back to licensed facilities in the same movement.
What shapes Pipe Bedding 20 mm supply in Oxford
Drainage packages on college estate work, science parks and housing plots around Oxford take Pipe Bedding 20 mm in daily call-offs rather than one bulk drop, so bedding lands as each run is dug rather than sitting in the way. Narrow college lanes, bus gates and conservation-area constraints in the centre decide whether it arrives by tipper, grab or bulk bag. Where the same site is also producing muckaway running back to licensed facilities on the same movement as delivery, we plan the removal and the delivery together so the lorry is not running one leg empty. The same routes serve Abingdon, Bicester and Didcot.
Questions we get asked
What void ratio should I design a 20 mm stone soakaway to?
Clean 20 mm single size is commonly designed at around 30% void ratio, but your drainage engineer should confirm the figure for the material and compaction assumed in the calculation.
Is 20 mm single size the same as 20 mm ballast?
No. Ballast is an all-in mix of stone and sand for concrete. 20 mm single size is a washed, clean stone with the fines removed and is not a concreting material.
Can you deliver inside Oxford's bus gates and conservation areas?
Yes. We schedule early-morning timed windows and use grab lorries, HIABs or bulk bags where an 8-wheel tipper cannot turn or discharge. Tell us the access constraint when you request a quote.
Material out as well as in, around Oxford
Most deliveries into Oxford pair with a removal: the lorry takes your arisings to a licensed facility and comes back loaded, so you pay for one movement rather than two.
Need pipe bedding 20 mm in Oxford?
Send us the tonnage, postcode and access — quote back within one working day.