Technical Booklet N Drainage·Page 14·Diagram 2.1
Branch connections to stacks - height and spacing requirements
Diagram 2.1 specifies the minimum vertical spacing requirements between branch connections on stacks based on building height, ranging from 450 mm for houses up to 3 storeys to 2 storeys for buildings over 20 storeys.
Branch connections to stacks. Minimum height (H) requirements: houses up to 3 storeys 450 mm; any building up to 5 storeys 750 mm; any building up to 20 storeys 1 storey; any building over 20 storeys 2 storeys.
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