Roof Eaves Gutter Downpipe Sizing Calculator

Smacna s new downspout and gutter sizing calculator enables the user to manually enter the design area of the roof or use the design area wizard for the calculation.

Roof eaves gutter downpipe sizing calculator.

There is no limit to downpipe size or eaves gutter size. This wizard makes it easy to calculate the roof design area by providing various shape calculations and the calculation for vertical walls area per international plumbing code ipc. From table 3 3 in as nzs 3500 3 the minimum size downpipes compatible with spouting of 6125mm 2 cross sectional area installed at a 1 500 gradient are 90mm diameter round or 100 x 50. This program will calculate the size of eaves gutters and the number of downpipes required for roof drainage.

15 m is a practical maximum gutter length to be served by a downspout. Downpipe eaves gutter long straight eaves gutters box gutter to rain water head box gutter vertical faces box gutter side o flow box gutter vertical o flow storm water pipe size storm water network overland flow path spitter upstream end custom rain water head. To limit the effects of thermal expansion in gutters 50 ft. To as nzs 3500 3 2015 stormwater drainage acceptable solutions.

The code limit is 150mm for dp s and 26 800 sq mm for flat eaves gutters the program will calculate the size and number of downpipes downspouts leaders required and the eaves gutter sizes for any roof.