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Drainage & Piped Services Standard Specification
Version 2014-1

Brick Shallow Inspection Chamber System for Below Ground Drainage
 System Performance: Design of access chambers for below ground drainage type A.
 Base slabs: Designated concretes for drainage applications type A.
 Walls:

 Masonry units: Bricks type A.
 Mortar:
 Support above pipes: Precast concrete lintels.
 Preformed channels and benching:
 Preformed channels: Plastics channels for access chambers type A and Vitrified clay

channels for access chambers type A.
 Benching: Designated concretes for drainage applications type B.
 Topping: Wearing screed.
 Access components: Access chamber steps type A.
 Covers:
 Cover slabs:
 Concrete: Designated concretes for drainage applications type C.
 Reinforcement: Submit proposals.
 Seating: Bricks type B and Precast concrete access cover seatings type A.
 Covers and frames: Access covers and frames type A.
 Backfill: Submit proposals.
 Execution: Formation for beddings in below ground drainage monitoring and control systems type
A; Constructing brick shallow access chambers for below ground drainage type A; Fixing steps in
below ground drainage monitoring and control systems type A; Laying preformed plastics channels,
branches and benching in access chambers for below ground drainage type A; Laying sealed access
fittings, branches and benching in access chambers for below ground drainage type A; and
Installing access covers and frames to chambers for below ground drainage type A.
 System Completion: Removal of debris and cleaning below ground drainage monitoring and
control systems type A; Water testing of manholes and inspection chambers for below ground
drainage monitoring and control systems type A; Testing of ancillary components in below ground
drainage monitoring and control systems type A; and Documentation type A.

System Performance

Design of access chambers for below ground drainage type A
 Design: Complete the design of the access chamber system.
 Standards: To BS EN 752 and in accordance with National Annex NA.

Products

Designated concretes for drainage applications type A

 Source: Submit proposals.

 Standard: To BS 8500-2.

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