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R11 Above ground foul drainage systems

GENERAL

115 ABOVE GROUND FOUL DRAINAGE SYSTEM
• Sanitary and floor drainage outlets: Sanitary fittings as section N13.
• Waste pipework: Plastics.
• Discharge stack and branch pipework: PVC-U.
• Separate ventilating pipework: PVC-U .
• Accessories: Rodding eyes.
• Disposal: To below ground drainage as section R12.

SYSTEM PERFORMANCE

210 DESIGN
• Design: Complete the design of the above ground foul drainage system.
• Standards: To BS EN 12056-1 and BS EN 12056-2, and in accordance with BS EN
12056-2 National Annexes NA-NG.
- System type to BS EN 12056-2: System III.
• Proposals: Submit drawings, technical information, calculations and manufacturers'
literature.

220 COLLECTION AND DISTRIBUTION OF FOUL WATER
• General: Quick, quiet and complete, self-cleansing in normal use, without
blockage, crossflow, backfall, leakage, odours, noise nuisance or risk to health.
• Pressure fluctuations in pipework (maximum): ±38 mm water gauge.
• Water seal retained in traps (minimum): 25 mm.

PRODUCTS

310 FLOOR CHANNELSgenerally
• Manufacturer: as CDM Partnership performance sepcification.
- Product reference: as CDM Partnership performance sepcification.
• Floor finish: site specific.
• Body type as CDM Partnership performance sepcification.
- Material: as CDM Partnership performance sepcification.
• Sizes: as CDM Partnership performance sepcification.
• Type of fall: as CDM Partnership performance sepcification.
• Grating/ cover:
- Loading: as CDM Partnership performance sepcification.
- Material: as CDM Partnership performance sepcification.
• Accessories: as CDM Partnership performance sepcification.

RotF generic (intermediate) NBS 2014 6118-AEW-XX-XX-NBS-A-01