Calcola la dimensione di grondaie, tubi e giù / beccucci per ogni tetto dimensione.
Find the size and number of downpipes/spouts required for any size roof, and the size of the associated eaves gutter.
Enter the DP size and find the number required, or enter the number of DP's and find the size required.
It has rainfall intensities for major Australian towns, but any intensity can be used.
It is based on the Australian Plumbing Code AS/NZS 3500.3