Sector Housing, private
Project type Refurbishment
Services provided Product / system supply
Project location South East England
Client Private
Contractor The Ethical Stone Company Ltd
Products used tuffgrit
 
 

Challenge

The site, a 365m2 driveway to a private residence in Beaconsfield, located atop a hill, slopes by 4% (1:25), causing problems with water run-off collecting fines from the existing bound gravel creating severe silting of the drainage system and surrounding hard/soft landscaped areas.

The brief was to implement a sustainable natural stone solution that would cope with rainfall, be aesthetically pleasing, and be more practical to walk and park on.

Solution

During site investigations a series of trial bores revealed a subgrade of sandy clay, suitable for a 'Type B - Partial Infiltration' permeable paving system (BS 7533-13:2009).

Following the removal of the top 120mm layer of existing bound gravel, the 70-90mm bedding layer of SteinTec tuffgrit bedding was installed. The new porphyry driveway was laid on top of this by hand in traditional bogen interlocking arc pattern. SteinTec tuffgrit was then brushed into joints, followed by two passes with a 350kg vibrating plate compactor.

Outcome

The construction has provided a low cost, durable, fully interlocked permeable unbound pavement able to withstand frequent heavy turning traffic whilst providing SuDS-compliant drainage.

Since construction, despite heavy rainfall, water run-off has been reduced by approximately 80-90% and water now reaching the existing drainage system is clear, having passed through the tuffgrit jointing and bedding layers.


Challenge

The site, a 365m2 driveway to a private residence in Beaconsfield, located atop a hill, slopes by 4% (1:25), causing problems with water run-off collecting fines from the existing bound gravel creating severe silting of the drainage system and surrounding hard/soft landscaped areas.

The brief was to implement a sustainable natural stone solution that would cope with rainfall, be aesthetically pleasing, and be more practical to walk and park on.

Solution

During site investigations a series of trial bores revealed a subgrade of sandy clay, suitable for a 'Type B - Partial Infiltration' permeable paving system (BS 7533-13:2009).

Following the removal of the top 120mm layer of existing bound gravel, the 70-90mm bedding layer of SteinTec tuffgrit bedding was installed. The new porphyry driveway was laid on top of this by hand in traditional bogen interlocking arc pattern. SteinTec tuffgrit was then brushed into joints, followed by two passes with a 350kg vibrating plate compactor.

Outcome

The construction has provided a low cost, durable, fully interlocked permeable unbound pavement able to withstand frequent heavy turning traffic whilst providing SuDS-compliant drainage.

Since construction, despite heavy rainfall, water run-off has been reduced by approximately 80-90% and water now reaching the existing drainage system is clear, having passed through the tuffgrit jointing and bedding layers.


 
 
 
Downloads
 
 
 
Enquire
 

Related entries

  • Steintec: tuffgrit bedding aggregate for unbound paving
    tuffgrit bedding aggregate for unbound paving
    Steintec
    tuffgrit is a crushed rock aggregate suitable for bedding paving elements where unbound (flexible, mortar-free) construction is used. tuffgrit is an economical choice, affording longer maintenance intervals and heavier...
  • Steintec: Sharing knowledge of SuDS compliant, rigid paving
    Sharing knowledge of SuDS compliant, rigid paving
    Steintec
    Steintec's Technical Director Steven Burton gave a practical demonstration of SuDS compliant, rigid permeable paving to delegates attending a BALI North Thames event hosted by CED Stone Group on Tuesday. The day-long workshop at...

Also by Steintec

Steintec address and contact details

tuffbau Ltd
1 Northwick Road
Canvey Island
SS8 0PU
Tel: 020 3598 9800
View on map
 
Follow Steintec