6F5 Capping delivered in Ipswich
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 Ipswich and across Suffolk 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 lines within 24–72 hours across IP postcodes. Artic and 8-wheel loads to port and industrial sites on timed bookings; tipper, grab and bulk bags for town and village work.
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 Ipswich 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
Port and industrial addresses need timed windows and vehicle-movement compliance; waterfront regeneration brings made ground that has to be classified before it can move. Housing and estate work inland is straightforward volume — sub-base, bedding and topsoil to a call-off programme.
What shapes 6F5 Capping supply in Ipswich
Waterfront made ground and firmer inland estate plots is exactly why 6F5 Capping moves in volume around Ipswich — it builds a working platform that takes plant and lorry traffic before any sub-base goes down. Port and industrial addresses needing timed windows and movement compliance decide whether it arrives by tipper, grab or bulk bag. Where the same site is also producing waterfront made ground that has to be classified before it can move, we plan the removal and the delivery together so the lorry is not running one leg empty. The same routes serve Felixstowe, Woodbridge and Stowmarket.
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 deliver to Felixstowe and the port area?
Yes — Felixstowe, the Ipswich docks and surrounding industrial estates are on our standard Suffolk routes, with timed gate bookings where required.
Material out as well as in, around Ipswich
Most deliveries into Ipswich 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 Ipswich?
Send us the tonnage, postcode and access — quote back within one working day.