6F5 Capping delivered in Birmingham
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 Birmingham and across West Midlands 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. Tipper and grab loads available across the West Midlands within 24–48 hours. Direct quarry haulage from the Midlands stone belt keeps loads efficient on bulk orders, and grab collections are timed around delivery slots for two-way running.
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 Birmingham 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
Our Birmingham customer base is heavily weighted toward civils and highways — Type 1 sub-base, 6F5 capping and certified pipe bedding make up the bulk of weekly volumes — with muckaway and WAC testing on the excavation side of the same jobs.
What shapes 6F5 Capping supply in Birmingham
Variable fill on highways and civils packages is exactly why 6F5 Capping moves in volume around Birmingham — it builds a working platform that takes plant and lorry traffic before any sub-base goes down. Highway working with lane closures and phased offloads decide whether it arrives by tipper, grab or bulk bag. Where the same site is also producing excavation arisings tested alongside the same civils packages they come from, we plan the removal and the delivery together so the lorry is not running one leg empty. The same routes serve Solihull, Wolverhampton and Coventry.
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.
Do you cover the wider West Midlands?
Yes — Birmingham, Solihull, Wolverhampton, Coventry, Dudley, Walsall and West Bromwich are all served from our Midlands haulage network.
Material out as well as in, around Birmingham
Most deliveries into Birmingham 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 Birmingham?
Send us the tonnage, postcode and access — quote back within one working day.