Smacna Gutter And Downspout Sizing

15 m is a practical maximum gutter length to be served by a downspout.

Smacna gutter and downspout sizing.

In response smacna s technical resources department has created a free downspout and gutter sizing calculator. 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 now providing a simple and effective downspout gutter sizing calculator. The downspout and gutter sizing calculator is located on the tools cad and apps page of the smacna website.

In response smacna s technical resources department has created a free downspout and gutter sizing calculator. For additional information please see below. This application runs the equations laid out in the smacna handbook. Gutter sizing per smacna.

To limit the effects of thermal expansion in gutters 50 ft. It should be used to calculate required gutter size downspout size and downspout spacing for a given roof area. 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 s downspout and gutter sizing calculator one of the most frequently asked architectural questions smacna receives is on sizing gutters and downspouts.