Roof drainage.
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Whilst this publication can still be purchased some of the information in it has been superseded by more recent research and standards. The BRE Group does not accept any responsibility whatsoever for any loss or damage, including - without limitation - indirect or consequential loss or damage arising from use, or loss of use, of data or profits arising out of, or in connection with, the use of this document.
This Digest presents data that provide a basis for rational design of eaves gutters and downpipes. The calculation requires a knowledge of the maximum flow load for which provision must be made and of the capacity of gutters and downpipes of various sizes.
Corrections: Page 3 - Valley gutters, paragraph 2, the second sentence should read: "Thus the method of calculating the quantity of water falling on the roof remains the same, except that the plan area of the double roof should be used instead of the actual sloping roof area".
Page 4 - Table 1b, column 3, for "6.8", read "8.8".