Page 65 - McD_ROTF DRAINAGE & PIPED SERVICES_Neat
P. 65
Drainage & Piped Services Standard Specification
Version 2014-1
Plastics Shallow Inspection Chamber System for Below ground Drainage
System Performance: Design of access chambers for below ground drainage type C.
System manufacturer: Polypipe Terrain or equal and approved
Bedding: Submit proposals.
Base: Designated concretes for drainage applications type J.
Chamber: Polypropylene
Surround: Submit proposals.
Collar: Submit proposals.
Seating: Submit proposals.
Cover: Integral, supplied with chamber.
Backfill: Submit proposals.
Execution: Formation for beddings in below ground drainage monitoring and control systems type C;
Installing plastics shallow access chambers for below ground drainage; and Installing access covers and
frames to chambers for below ground drainage type C.
System Completion: Removal of debris and cleaning below ground drainage monitoring and control
systems type B; Water testing of manholes and inspection chambers for below ground drainage monitoring
and control systems type B; Testing of ancillary components in below ground drainage monitoring and
control systems type B; and Documentation type B.
System Performance
Design of access chambers for below ground drainage type C
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 J
Source: Submit proposals.
Standard: To BS 8500-2.
Third party certification: BSI Kitemark.
Concrete: Manufacturer's standard.
Aggregate size (maximum): Manufacturer's standard.
Execution
Formation for beddings in below ground drainage monitoring and control systems type C
Timing: Excavate to formation immediately before laying bases or beddings.
Mud, rock projections, boulders and hard spots: Remove. Replace with consolidated bedding material.
Local soft spots: Harden by tamping in bedding material.
Inspection of excavated formations: Give notice.
3 / 33
McDonalds Restaurants Ltd
