Technical Booklet C Site Preparation and Resistance to Contaminants and Moisture·Page 20·4.7
Drain and sewer blockages - sewage backflow prevention
Blockages in drains and sewers may cause sewage backflow into buildings. Guidance on preventing backflow is available in CIRIA publication C506 Low-cost options for prevention of flooding from sewers.
4.7 Blockages in drains and sewers may lead to backflow of sewage into buildings. Information on preventing backflow is given in CIRIA publication C506 Low-cost options for prevention of flooding from sewers.
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