TGD H 2010 – 1.5.1.1 – SURFACE WATER DRAINAGE, Gutters

1.5.1.1 There is no requirement in this document for the provision of rainwater drainage for areas of 6 m2 or less, i.e. small roofs, balconies etc., unless they receive a flow of rainwater from another pipe, roof or hard surface.

C:BCARTGDTGD hTGD%20H%202010TGD%20H%202010%20-%20SECTION%201%201.5.1.1.pdf