6F5 Capping delivered in Basingstoke
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 Basingstoke and across Hampshire 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. 24–72 hours on stocked lines across RG21–RG29 postcodes. Artic loads for business-park earthworks, 8-wheel tippers for estate roads, grab and bulk bags for tight plots and landscaping.
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 Basingstoke 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
Chalk subgrade is the local factor — arisings often behave differently to the clay further east, and capping choice matters on wet-weather working platforms. Business-park and distribution work runs on artic loads to programme; housing sites take phased plot-level bedding, sand and topsoil.
What shapes 6F5 Capping supply in Basingstoke
Chalk subgrade that behaves differently to the clay further east is exactly why 6F5 Capping moves in volume around Basingstoke — it builds a working platform that takes plant and lorry traffic before any sub-base goes down. Business-park and distribution sites on programme, plus phased housing plots decide whether it arrives by tipper, grab or bulk bag. Where the same site is also producing chalk and clay arisings where wet-weather handling changes the plan, we plan the removal and the delivery together so the lorry is not running one leg empty. The same routes serve Andover, Alton and Newbury.
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.
Which north Hampshire areas do you cover?
Basingstoke, Andover, Alton, Fleet, Tadley and Whitchurch, plus Newbury and Winchester on the same routes.
Material out as well as in, around Basingstoke
Most deliveries into Basingstoke 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 Basingstoke?
Send us the tonnage, postcode and access — quote back within one working day.