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Drainage & Piped Services Standard Specification
Version 2014-1

Standard: To BS 8500-2.
Third party certification: BSI Kitemark.
Concrete: Submit proposals.
Aggregate size (maximum): Submit proposals.

Designated concretes for drainage applications type D
Standard: To BS 8500-2.
Third party certification: BSI Kitemark.
Concrete: Submit proposals.
Aggregate size (maximum): Submit proposals.

Orifice plate flow control units type A
Manufacturer: Submit proposals.
Material: Submit proposals.
Flow rate (maximum): Submit proposals.

Vortex flow control units type A
Manufacturer: Submit proposals.
Third party certification: BBA Agreement certification.
Material: Submit proposals.
Flow rate (maximum): Submit proposals.
Drain down secondary outlet pipe:

Form: Submit proposals.
Control type: Submit proposals.

Access chamber steps type B
Manufacturer: Submit proposals.
Standard: To BS EN 13101.
Form: Submit proposals.
Material: Submit proposals.
Integral accessories: Submit proposals.

Bricks type C
Standard: To BS EN 771-1; To BS EN 771-2; and To BS EN 771-3.
Brick type: Engineering.
Properties:

Crushing strength (minimum): Submit proposals.
Durability: Submit proposals.
Recycled content: Not applicable.

Precast concrete access cover seatings type B 3 / 24
Manufacturer: Submit proposals.
Standards: To BS 5911-3 and BS EN 1917.
Third party product certification: BSI Kitemark.
Opening sizes: To suit access covers.

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