6F5 Capping delivered in Oxford
6F5 is a coarse graded capping material to Specification for Highway Works Clause 613, used to build a working platform over weak subgrades before the sub-base goes down. On soft ground it is far more economical than importing extra Type 1, and it spreads and compacts into a stable layer that protects the formation through the wet.
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
- Grading
- Coarse graded, nominal 0–125 mm
- Specification
- SHW Clause 613 capping (Class 6F5)
- Material
- Primary crushed rock
- Typical layer thickness
- Commonly 300–600 mm, per design
- Supply formats
- Loose tipper, artic bulk loads
- 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
- Capping layer over weak or CBR-deficient subgrades
- Temporary haul roads and site working platforms
- Highways and adopted road construction to SHW spec
- Bulk fill and level-up on earthworks schemes
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 6F5 Capping supply in Oxford
River-gravel ground in the centre, firmer plots out at the science parks is exactly why 6F5 Capping moves in volume around Oxford — it builds a working platform that takes plant and lorry traffic before any sub-base goes down. 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 is the difference between 6F5 and 6F2 capping?
Both are capping materials under SHW Clause 613. 6F5 is typically a coarser graded fill used where a thicker, robust platform is needed; 6F2 is the finer of the two gradings and is widely used as general capping fill. Follow your earthworks specification for which class is required.
How thick should a 6F5 capping layer be?
Thickness is a design decision based on subgrade CBR and the loading above — commonly 300–600 mm. Your geotechnical engineer should specify it; we supply the tonnage against the design.
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 6f5 capping in Oxford?
Send us the tonnage, postcode and access — quote back within one working day.