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Updated: 13 October 2018

Part P. Drainage

P2. Design of Drainage Installations

1. Any drainage installation in any building shall be so designed and constructed that -


(a) an adequate number of sanitary fixtures is provided in relation to the population and class of occupancy of such building;


(b) such installation is capable of carrying the design hydraulic load;


(c) such installation is capable of discharging into any common drain, connecting sewer or sewer provided to accept such discharge;


(d) all components and materials used in such installation are watertight;


(e) no nuisance or danger to health will be caused as a result of the operation of any such installation;


(f) any drain in such system is of such strength, having regard to the manner in which it is bedded or supported, that it is capable of sustaining the actions to which it may normally be subjected and that it is, where necessary, protected against any drainage;


(g) all sanitary fixtures are so located that they are easily accessible to those persons they are intended to serve;


(h) any necessary inspection, cleaning and maintenance required, may be performed through the means of access provided.


2. The requirements of subregulation (1) shall be deemed to be satisfied where such installation complies with SANS 10400-P: Provided that where a local authority is of the opinion that the size or complexity of the drainage installation in any building renders it essential for such installation to be the subject of an approved rational design prepared by an approved competent person, such local authority shall, in writing, notify the owner of such building of its reasons for the necessity for such design and may require such owner to submit for approval plans and particulars of a complete drainage installation based on such design.



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