Smacna Gutter And Downspout Sizing

The capacity of a sloped rectangular gutter may be approximated by using a gutter cross section area not less than that of a semicircular gutter and a depth to width ratio of at least 0 75.

Smacna gutter and downspout sizing.

For additional information please see below. In response smacna s technical resources department has created a free downspout and gutter sizing calculator. It should be used to calculate required gutter size downspout size and downspout spacing for a given roof area. The sheet metal and air conditioning contractors national association smacna is now providing a simple and effective downspout gutter sizing calculator.

To limit the effects of thermal expansion in gutters 50 ft. Gutter sizing per smacna. This tool allows engineers architects designers and contractors to easily and accurately size downspout and gutters per smacna s architectural sheet metal manual. The sheet metal and air conditioning contractors national association smacna is an international trade association representing 3 500 contributing contractor firms.

15 m is a practical maximum gutter length to be served by a downspout. In response smacna s technical resources department has created a free downspout and gutter sizing calculator. Now architects engineers designers and contractors can easily and accurately size downspouts and gutters according to the specifications in smacna s architectural sheet metal manual 7th edition 2012. This application runs the equations laid out in the smacna handbook.