The ideal Permeable Concrete for surface and storm water managementPermeable Concrete, Next store car park, High Wycombe

4069/1015©2015 Tarmac Trading Limited.

THE CHALLENGE

Planning requirements for this large

retail development dictated that a

sustainable drainage solution was

required in the form of a permeable

pavement for the 2800 m2 parking

area. Tarmac was contacted by

the designer Pick Everard about

the proposed pavement design.

The finished pavement needed

to be durable enough to resist

the expected traffic volumes, but

also be free-draining to avoid

standing water and overloading

of local drainage systems.

Product Topmix Permeable

Client Next PLC

Main Contractor PJ Careys

Location High Wycombe

Date 2014/2015

For more details contact your topmixpermeable@tarmac.com or call 0800 1 218 218

TARMAC.COM

TOPMIX PERMEABLEPermeable Concrete pavement solution

OUR SOLUTION

Tarmac proposed the use of Topmix

Permeable, an advanced permeable

concrete solution, as a full infiltration

system. This system has a number of

benefits, one of these being that it

can be installed 'in-house' by

the Tarmac Specialist Concrete

Installations team. It is installed in a

single layer that is suitable for

trafficking, is highly permeable and

enables the water attenuation

requirements on site to be met.

RESULTS AND BENEFITS

As this part of the project began in

late October, seasonal weather

presented a challenge. However,

because the surface was being

produced and installed by Tarmac,

close contact could be maintained

between the Tarmac teams to

ensure that site conditions could be

monitored and a continuous supply

of timed concrete deliveries made as

needed. The project was delivered to

schedule, on budget and to the

agreed design specification. Already,

despite recent heavy rainfall the

pavement has proven to be

free-draining and is delivering the

water attenuation required by the

designer.